{
 "version": "2.2",
 "instance": {
  "nbbk-20260331x10q.htm": {
   "nsprefix": "nbbk",
   "nsuri": "http://www.needhambank.com/20260331",
   "dts": {
    "schema": {
     "local": [
      "nbbk-20260331.xsd"
     ],
     "remote": [
      "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xl-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "http://www.xbrl.org/2006/ref-2006-02-27.xsd",
      "http://www.xbrl.org/lrr/arcrole/esma-arcrole-2018-11-21.xsd",
      "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd",
      "https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd",
      "https://www.xbrl.org/2023/calculation-1.1.xsd",
      "https://www.xbrl.org/dtr/type/2020-01-21/types.xsd",
      "https://www.xbrl.org/dtr/type/2024-01-31/types.xsd",
      "https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd",
      "https://xbrl.fasb.org/srt/2025/elts/srt-roles-2025.xsd",
      "https://xbrl.fasb.org/srt/2025/elts/srt-types-2025.xsd",
      "https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd",
      "https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd",
      "https://xbrl.fasb.org/us-gaap/2025/elts/us-types-2025.xsd",
      "https://xbrl.sec.gov/country/2025/country-2025.xsd",
      "https://xbrl.sec.gov/dei/2025/dei-2025.xsd",
      "https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd",
      "https://xbrl.sec.gov/ecd/2025/ecd-sub-2025.xsd",
      "https://xbrl.sec.gov/stpr/2025/stpr-2025.xsd"
     ]
    },
    "calculationLink": {
     "local": [
      "nbbk-20260331_cal.xml"
     ]
    },
    "definitionLink": {
     "local": [
      "nbbk-20260331_def.xml"
     ]
    },
    "labelLink": {
     "local": [
      "nbbk-20260331_lab.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "nbbk-20260331_pre.xml"
     ]
    },
    "inline": {
     "local": [
      "nbbk-20260331x10q.htm"
     ]
    }
   },
   "keyStandard": 360,
   "keyCustom": 45,
   "axisStandard": 31,
   "axisCustom": 1,
   "memberStandard": 59,
   "memberCustom": 31,
   "hidden": {
    "total": 20,
    "http://xbrl.sec.gov/dei/2025": 7,
    "http://fasb.org/us-gaap/2025": 13
   },
   "contextCount": 357,
   "entityCount": 1,
   "segmentCount": 91,
   "elementCount": 765,
   "unitCount": 8,
   "baseTaxonomies": {
    "http://fasb.org/us-gaap/2025": 1558,
    "http://xbrl.sec.gov/dei/2025": 30,
    "http://fasb.org/srt/2025": 25,
    "http://xbrl.sec.gov/ecd/2025": 4
   },
   "report": {
    "R1": {
     "role": "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation",
     "longName": "995200090 - Document - Document and Entity Information",
     "shortName": "Document and Entity Information",
     "isDefault": "true",
     "groupType": "document",
     "subGroupType": "",
     "menuCat": "Cover",
     "order": "1",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "dei:DocumentType",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "dei:DocumentType",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R2": {
     "role": "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets",
     "longName": "995200100 - Statement - Consolidated Balance Sheets",
     "shortName": "Consolidated Balance Sheets",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "2",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:CashAndDueFromBanks",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:CashAndDueFromBanks",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R3": {
     "role": "http://www.needhambank.com/role/StatementConsolidatedBalanceSheetsParenthetical",
     "longName": "995200105 - Statement - Consolidated Balance Sheets (Parenthetical)",
     "shortName": "Consolidated Balance Sheets (Parenthetical)",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "parenthetical",
     "menuCat": "Statements",
     "order": "3",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:PreferredStockParOrStatedValuePerShare",
      "unitRef": "Unit_Divide_USD_shares_IAw8C5ijtUy7uvaCU5yeuw",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:PreferredStockParOrStatedValuePerShare",
      "unitRef": "Unit_Divide_USD_shares_IAw8C5ijtUy7uvaCU5yeuw",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R4": {
     "role": "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome",
     "longName": "995200200 - Statement - Consolidated Statements of Income",
     "shortName": "Consolidated Statements of Income",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "4",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:InterestAndFeeIncomeLoansAndLeases",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:InterestAndFeeIncomeLoansAndLeases",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R5": {
     "role": "http://www.needhambank.com/role/StatementConsolidatedStatementsOfComprehensiveIncome",
     "longName": "995200300 - Statement - Consolidated Statements of Comprehensive Income",
     "shortName": "Consolidated Statements of Comprehensive Income",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "5",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:NetIncomeLoss",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R6": {
     "role": "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity",
     "longName": "995200400 - Statement - Consolidated Statements of Changes in Shareholders' Equity",
     "shortName": "Consolidated Statements of Changes in Shareholders' Equity",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "6",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_yYdEYGHJY0SRVp6gPy699w",
      "name": "us-gaap:StockholdersEquity",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_yYdEYGHJY0SRVp6gPy699w",
      "name": "us-gaap:StockholdersEquity",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R7": {
     "role": "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityParenthetical",
     "longName": "995200405 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Parenthetical)",
     "shortName": "Consolidated Statements of Changes in Shareholders' Equity (Parenthetical)",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "parenthetical",
     "menuCat": "Statements",
     "order": "7",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:EmployeeStockOwnershipPlanESOPSharesContributedToESOP",
      "unitRef": "Unit_Standard_shares_DC11bt5cfEqHWVvuTufHiQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R8": {
     "role": "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows",
     "longName": "995200500 - Statement - Consolidated Statements of Cash Flows",
     "shortName": "Consolidated Statements of Cash Flows",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "8",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ProfitLoss",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ProfitLoss",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R9": {
     "role": "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentation",
     "longName": "995210101 - Disclosure - Corporate Structure and Nature of Operations: Basis of Presentation",
     "shortName": "Corporate Structure and Nature of Operations: Basis of Presentation",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "9",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R10": {
     "role": "http://www.needhambank.com/role/DisclosureSummaryOfSignificantAccountingPolicies",
     "longName": "995210201 - Disclosure - Summary of Significant Accounting Policies",
     "shortName": "Summary of Significant Accounting Policies",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "10",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:SignificantAccountingPoliciesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:SignificantAccountingPoliciesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R11": {
     "role": "http://www.needhambank.com/role/DisclosureSecurities",
     "longName": "995210301 - Disclosure - Securities",
     "shortName": "Securities",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "11",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R12": {
     "role": "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQuality",
     "longName": "995210401 - Disclosure - Loans Receivable, Allowance for Credit Losses and Credit Quality",
     "shortName": "Loans Receivable, Allowance for Credit Losses and Credit Quality",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "12",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R13": {
     "role": "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssets",
     "longName": "995210501 - Disclosure - Goodwill and Other Intangible Assets",
     "shortName": "Goodwill and Other Intangible Assets",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "13",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R14": {
     "role": "http://www.needhambank.com/role/DisclosureEmployeeBenefits",
     "longName": "995210601 - Disclosure - Employee Benefits",
     "shortName": "Employee Benefits",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "14",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:DefinedContributionPlanTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:DefinedContributionPlanTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R15": {
     "role": "http://www.needhambank.com/role/DisclosureFairValueMeasurements",
     "longName": "995210701 - Disclosure - Fair Value Measurements",
     "shortName": "Fair Value Measurements",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "15",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:FairValueDisclosuresTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:FairValueDisclosuresTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R16": {
     "role": "http://www.needhambank.com/role/DisclosureCommitmentsAndContingencies",
     "longName": "995210801 - Disclosure - Commitments and Contingencies",
     "shortName": "Commitments and Contingencies",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "16",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R17": {
     "role": "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivities",
     "longName": "995210901 - Disclosure - Derivatives and Hedging Activities",
     "shortName": "Derivatives and Hedging Activities",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "17",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R18": {
     "role": "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncome",
     "longName": "995211001 - Disclosure - Other Comprehensive Income",
     "shortName": "Other Comprehensive Income",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "18",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ComprehensiveIncomeNoteTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ComprehensiveIncomeNoteTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R19": {
     "role": "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirements",
     "longName": "995211101 - Disclosure - Regulatory Capital Requirements",
     "shortName": "Regulatory Capital Requirements",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "19",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:RegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:RegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R20": {
     "role": "http://www.needhambank.com/role/DisclosureEarningsPerShareeps",
     "longName": "995211201 - Disclosure - Earnings Per Share (\"EPS\")",
     "shortName": "Earnings Per Share (\"EPS\")",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "20",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:EarningsPerShareTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:EarningsPerShareTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R21": {
     "role": "http://xbrl.sec.gov/ecd/role/PvpDisclosure",
     "longName": "995410 - Disclosure - Pay vs Performance Disclosure",
     "shortName": "Pay vs Performance Disclosure",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "21",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:NetIncomeLoss",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R22": {
     "role": "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements",
     "longName": "995445 - Disclosure - Insider Trading Arrangements",
     "shortName": "Insider Trading Arrangements",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "22",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "ecd:Rule10b51ArrAdoptedFlag",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ecd:NonRule10b51ArrAdoptedFlag",
       "p",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "ecd:Rule10b51ArrAdoptedFlag",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ecd:NonRule10b51ArrAdoptedFlag",
       "p",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R23": {
     "role": "http://www.needhambank.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies",
     "longName": "99920202 - Disclosure - Summary of Significant Accounting Policies (Policies)",
     "shortName": "Summary of Significant Accounting Policies (Policies)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "policies",
     "menuCat": "Policies",
     "order": "23",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:UseOfEstimates",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "us-gaap:SignificantAccountingPoliciesTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:UseOfEstimates",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "us-gaap:SignificantAccountingPoliciesTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R24": {
     "role": "http://www.needhambank.com/role/DisclosureSecuritiesTables",
     "longName": "99930303 - Disclosure - Securities (Tables)",
     "shortName": "Securities (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "24",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R25": {
     "role": "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityTables",
     "longName": "99930403 - Disclosure - Loans Receivable, Allowance for Credit Losses and Credit Quality (Tables)",
     "shortName": "Loans Receivable, Allowance for Credit Losses and Credit Quality (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "25",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R26": {
     "role": "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsTables",
     "longName": "99930503 - Disclosure - Goodwill and Other Intangible Assets (Tables)",
     "shortName": "Goodwill and Other Intangible Assets (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "26",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R27": {
     "role": "http://www.needhambank.com/role/DisclosureEmployeeBenefitsTables",
     "longName": "99930603 - Disclosure - Employee Benefits (Tables)",
     "shortName": "Employee Benefits (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "27",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R28": {
     "role": "http://www.needhambank.com/role/DisclosureFairValueMeasurementsTables",
     "longName": "99930703 - Disclosure - Fair Value Measurements (Tables)",
     "shortName": "Fair Value Measurements (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "28",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R29": {
     "role": "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesTables",
     "longName": "99930803 - Disclosure - Commitments and Contingencies (Tables)",
     "shortName": "Commitments and Contingencies (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "29",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfFairValueOffBalanceSheetRisksTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfFairValueOffBalanceSheetRisksTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R30": {
     "role": "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesTables",
     "longName": "99930903 - Disclosure - Derivatives and Hedging Activities (Tables)",
     "shortName": "Derivatives and Hedging Activities (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "30",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfDerivativeInstrumentsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfDerivativeInstrumentsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R31": {
     "role": "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeTables",
     "longName": "99931003 - Disclosure - Other Comprehensive Income (Tables)",
     "shortName": "Other Comprehensive Income (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "31",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "us-gaap:ComprehensiveIncomeNoteTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "us-gaap:ComprehensiveIncomeNoteTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R32": {
     "role": "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsTables",
     "longName": "99931103 - Disclosure - Regulatory Capital Requirements (Tables)",
     "shortName": "Regulatory Capital Requirements (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "32",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R33": {
     "role": "http://www.needhambank.com/role/DisclosureEarningsPerShareepsTables",
     "longName": "99931203 - Disclosure - Earnings Per Share (\"EPS\") (Tables)",
     "shortName": "Earnings Per Share (\"EPS\") (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "33",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "us-gaap:EarningsPerShareTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "us-gaap:EarningsPerShareTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R34": {
     "role": "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationDetails",
     "longName": "99940101 - Disclosure - Corporate Structure and Nature of Operations Basis of Presentation (Details)",
     "shortName": "Corporate Structure and Nature of Operations Basis of Presentation (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "34",
     "firstAnchor": {
      "contextRef": "Duration_12_27_2023_To_12_27_2023_qH7UaWhj6kSXwZkuDuvP9A",
      "name": "nbbk:StockIssuedDuringPeriodIssuedCharitySharesNewIssues",
      "unitRef": "Unit_Standard_shares_DC11bt5cfEqHWVvuTufHiQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_12_27_2023_To_12_27_2023_qH7UaWhj6kSXwZkuDuvP9A",
      "name": "nbbk:StockIssuedDuringPeriodIssuedCharitySharesNewIssues",
      "unitRef": "Unit_Standard_shares_DC11bt5cfEqHWVvuTufHiQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R35": {
     "role": "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails",
     "longName": "99940102 - Disclosure - Corporate Structure and Nature of Operations Basis of Presentation - Acquisition (Details)",
     "shortName": "Corporate Structure and Nature of Operations Basis of Presentation - Acquisition (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "35",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:Goodwill",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:GoodwillPeriodIncreaseDecrease",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R36": {
     "role": "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
     "longName": "99940301 - Disclosure - Securities - Amortized cost to fair value (Details)",
     "shortName": "Securities - Amortized cost to fair value (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "36",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock",
       "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock",
       "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R37": {
     "role": "http://www.needhambank.com/role/DisclosureSecuritiesNarrativesDetails",
     "longName": "99940302 - Disclosure - Securities - Narratives (Details)",
     "shortName": "Securities - Narratives (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "37",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R38": {
     "role": "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails",
     "longName": "99940303 - Disclosure - Securities - Maturities of Debt Securities (Details)",
     "shortName": "Securities - Maturities of Debt Securities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "38",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R39": {
     "role": "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails",
     "longName": "99940304 - Disclosure - Securities - Fair value and gross unrealized losses (Details)",
     "shortName": "Securities - Fair value and gross unrealized losses (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "39",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions",
      "unitRef": "Unit_Standard_security__FLBqDJJWUmFJwzM9ZBn-g",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions",
      "unitRef": "Unit_Standard_security__FLBqDJJWUmFJwzM9ZBn-g",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R40": {
     "role": "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
     "longName": "99940401 - Disclosure - Loans Receivable, Allowance for Credit Losses and Credit Quality (Details)",
     "shortName": "Loans Receivable, Allowance for Credit Losses and Credit Quality (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "40",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:LoansHeldForSaleFairValueDisclosure",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "nbbk:PeerGroupFinancialInstitutionsSize",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-9",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R41": {
     "role": "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails",
     "longName": "99940402 - Disclosure - Loans Receivable, Allowance for Credit Losses and Credit Quality - Consumer loan pools (Details)",
     "shortName": "Loans Receivable, Allowance for Credit Losses and Credit Quality - Consumer loan pools (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "41",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_PledgedStatusAxis_us-gaap_AssetPledgedAsCollateralMember_us-gaap_PledgingPurposeAxis_us-gaap_FederalHomeLoanBankAdvancesMember_kdstT-AF9kKPInEpIjN75Q",
      "name": "us-gaap:AdvancesFromFederalHomeLoanBanks",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-7",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R42": {
     "role": "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
     "longName": "99940403 - Disclosure - Loans Receivable, Allowance for Credit Losses and Credit Quality - Aging of the Amortized Cost of Loans Receivables (Details)",
     "shortName": "Loans Receivable, Allowance for Credit Losses and Credit Quality - Aging of the Amortized Cost of Loans Receivables (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "42",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_FinancingReceivablesPeriodPastDueAxis_us-gaap_FinancialAssetNotPastDueMember_nmpLbfAWBkSPIm0QMMesiQ",
      "name": "us-gaap:FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:PastDueFinancingReceivablesTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R43": {
     "role": "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails",
     "longName": "99940404 - Disclosure - Loans Receivable, Allowance for Credit Losses and Credit Quality - Nonaccrual Loans (Details)",
     "shortName": "Loans Receivable, Allowance for Credit Losses and Credit Quality - Nonaccrual Loans (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "43",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfFinancingReceivablesNonAccrualStatusTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfFinancingReceivablesNonAccrualStatusTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R44": {
     "role": "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
     "longName": "99940405 - Disclosure - Loans Receivable, Allowance for Credit Losses and Credit Quality - Loans Receivable by Internal Risk Grade by Year of Origination (Details)",
     "shortName": "Loans Receivable, Allowance for Credit Losses and Credit Quality - Loans Receivable by Internal Risk Grade by Year of Origination (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "44",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R45": {
     "role": "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
     "longName": "99940406 - Disclosure - Loans Receivable, Allowance for Credit Losses and Credit Quality - Change in the ACL (Details)",
     "shortName": "Loans Receivable, Allowance for Credit Losses and Credit Quality - Change in the ACL (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "45",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2025_tP72SMQhqk29bhcAcnsZKA",
      "name": "us-gaap:FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R46": {
     "role": "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
     "longName": "99940407 - Disclosure - Loans Receivable, Allowance for Credit Losses and Credit Quality - Collateral-Dependent Loans (Details)",
     "shortName": "Loans Receivable, Allowance for Credit Losses and Credit Quality - Collateral-Dependent Loans (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "46",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "nbbk:FinancingReceivableExcludingAccruedInterestCollateralDependentLoanAmount",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "nbbk:ScheduleOfCollateralDependentLoansTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "nbbk:FinancingReceivableExcludingAccruedInterestCollateralDependentLoanAmount",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "nbbk:ScheduleOfCollateralDependentLoansTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R47": {
     "role": "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails",
     "longName": "99940408 - Disclosure - Loans Receivable, Allowance for Credit Losses and Credit Quality - Loans modified to borrowers experiencing financial difficulty (Details)",
     "shortName": "Loans Receivable, Allowance for Credit Losses and Credit Quality - Loans modified to borrowers experiencing financial difficulty (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "47",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2025_To_3_31_2025_QfnNGBiIK0-OQctuHoRzsQ",
      "name": "us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2025_To_3_31_2025_QfnNGBiIK0-OQctuHoRzsQ",
      "name": "us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R48": {
     "role": "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails",
     "longName": "99940501 - Disclosure - Goodwill and Other Intangible Assets - Carrying amount (Details)",
     "shortName": "Goodwill and Other Intangible Assets - Carrying amount (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "48",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:Goodwill",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:IntangibleAssetsNetIncludingGoodwill",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
       "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R49": {
     "role": "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInCarryingValueOfGoodwillDetails",
     "longName": "99940502 - Disclosure - Goodwill and Other Intangible Assets - Changes in the carrying value of goodwill (Details)",
     "shortName": "Goodwill and Other Intangible Assets - Changes in the carrying value of goodwill (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "49",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2025_tP72SMQhqk29bhcAcnsZKA",
      "name": "us-gaap:Goodwill",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R50": {
     "role": "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails",
     "longName": "99940503 - Disclosure - Goodwill and Other Intangible Assets - Other intangible assets (Details)",
     "shortName": "Goodwill and Other Intangible Assets - Other intangible assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "50",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:FiniteLivedIntangibleAssetsNet",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2025_To_12_31_2025_s6WsDWoxvUq4PQVKFcCA8w",
      "name": "us-gaap:GoodwillImpairmentLoss",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R51": {
     "role": "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails",
     "longName": "99940504 - Disclosure - Goodwill and Other Intangible Assets - Estimated amortization expense (Details)",
     "shortName": "Goodwill and Other Intangible Assets - Estimated amortization expense (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "51",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R52": {
     "role": "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeePensionPlanDetails",
     "longName": "99940601 - Disclosure - Employee Benefits - Employee Pension Plan (Details)",
     "shortName": "Employee Benefits - Employee Pension Plan (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "52",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:DefinedContributionPlanEmployerDiscretionaryContributionAmount",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:DefinedContributionPlanEmployerDiscretionaryContributionAmount",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R53": {
     "role": "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails",
     "longName": "99940602 - Disclosure - Employee Benefits - Deferred Compensation Plans (Details)",
     "shortName": "Employee Benefits - Deferred Compensation Plans (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "53",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_RetirementPlanNameAxis_nbbk_OfficersDeferredCompensationPlansMember_oZb4gyxh_UmAw463V9eZSQ",
      "name": "nbbk:LiabilityDefinedContributionPlan",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_RetirementPlanNameAxis_nbbk_OfficersDeferredCompensationPlansMember_oZb4gyxh_UmAw463V9eZSQ",
      "name": "nbbk:LiabilityDefinedContributionPlan",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R54": {
     "role": "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDirectorPensionPlanDetails",
     "longName": "99940603 - Disclosure - Employee Benefits - Director Pension Plan (Details)",
     "shortName": "Employee Benefits - Director Pension Plan (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "54",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_RetirementPlanNameAxis_nbbk_DirectorPensionPlanMember_4zZbHuARR0CL8ZRmw54ANA",
      "name": "us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_RetirementPlanNameAxis_nbbk_DirectorPensionPlanMember_4zZbHuARR0CL8ZRmw54ANA",
      "name": "us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R55": {
     "role": "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails",
     "longName": "99940604 - Disclosure - Employee Benefits - Employee Stock Ownership Plan (Details)",
     "shortName": "Employee Benefits - Employee Stock Ownership Plan (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "55",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:EmployeeStockOwnershipPlanESOPSharesContributedToESOP",
      "unitRef": "Unit_Standard_shares_DC11bt5cfEqHWVvuTufHiQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares",
      "unitRef": "Unit_Standard_shares_DC11bt5cfEqHWVvuTufHiQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R56": {
     "role": "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails",
     "longName": "99940605 - Disclosure - Employee Benefits - Stock-Based Compensation (Details)",
     "shortName": "Employee Benefits - Stock-Based Compensation (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "56",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:AllocatedShareBasedCompensationExpense",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_4_23_2025_us-gaap_PlanNameAxis_nbbk_EquityIncentivePlan2025Member_kUAa0WWiBEOW4xDk86Ew3A",
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized",
      "unitRef": "Unit_Standard_shares_DC11bt5cfEqHWVvuTufHiQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R57": {
     "role": "http://www.needhambank.com/role/DisclosureEmployeeBenefitsRestrictedStockAwardActivitiesDetails",
     "longName": "99940606 - Disclosure - Employee Benefits - Restricted Stock Award Activities (Details)",
     "shortName": "Employee Benefits - Restricted Stock Award Activities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "57",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2025_us-gaap_AwardTypeAxis_us-gaap_RestrictedStockMember_5REfRuT-fEuQaKtXxXZZ1A",
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber",
      "unitRef": "Unit_Standard_shares_DC11bt5cfEqHWVvuTufHiQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2025_us-gaap_AwardTypeAxis_us-gaap_RestrictedStockMember_5REfRuT-fEuQaKtXxXZZ1A",
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber",
      "unitRef": "Unit_Standard_shares_DC11bt5cfEqHWVvuTufHiQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R58": {
     "role": "http://www.needhambank.com/role/DisclosureEmployeeBenefitsScheduleOfCompensationExpenseDetails",
     "longName": "99940607 - Disclosure - Employee Benefits - Schedule of compensation expense (Details)",
     "shortName": "Employee Benefits - Schedule of compensation expense (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "58",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:AllocatedShareBasedCompensationExpense",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_AwardTypeAxis_us-gaap_RestrictedStockMember_4mN6p8I-uk2TRmzTTNNhCw",
      "name": "us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R59": {
     "role": "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
     "longName": "99940701 - Disclosure - Fair Value Measurements - Assets Measured and Reported at Estimated Fair Value on a Recurring Basis (Details)",
     "shortName": "Fair Value Measurements - Assets Measured and Reported at Estimated Fair Value on a Recurring Basis (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "59",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:DebtSecuritiesAvailableForSaleExcludingAccruedInterest",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_i7sc00KF5Ei3_4LhlHZKEQ",
      "name": "us-gaap:DebtSecuritiesAvailableForSaleExcludingAccruedInterest",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R60": {
     "role": "http://www.needhambank.com/role/DisclosureFairValueMeasurementsNarrativesDetails",
     "longName": "99940702 - Disclosure - Fair Value Measurements - Narratives (Details)",
     "shortName": "Fair Value Measurements - Narratives (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "60",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases",
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases",
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R61": {
     "role": "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails",
     "longName": "99940703 - Disclosure - Fair Value Measurements - Fair Value on a Non-Recurring Basis (Details)",
     "shortName": "Fair Value Measurements - Fair Value on a Non-Recurring Basis (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "61",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsNonrecurringMember_UQZ0VS1Bu027DAWicqXwaQ",
      "name": "us-gaap:LiabilitiesFairValueDisclosure",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsNonrecurringMember_UQZ0VS1Bu027DAWicqXwaQ",
      "name": "us-gaap:LiabilitiesFairValueDisclosure",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R62": {
     "role": "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails",
     "longName": "99940704 - Disclosure - Fair Value Measurements - Significant Unobservable Inputs Used in the Fair Value Measurements (Details)",
     "shortName": "Fair Value Measurements - Significant Unobservable Inputs Used in the Fair Value Measurements (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "62",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_srt_RangeAxis_srt_MinimumMember_us-gaap_MeasurementInputTypeAxis_us-gaap_MeasurementInputAppraisedValueMember_us-gaap_ValuationTechniqueAxis_nbbk_AppraisalValueComparisonSalesMember_gCK2ydNs5kudvFe7sYiQ3Q",
      "name": "nbbk:CollateralDependentLoansMeasurementInput",
      "unitRef": "Unit_Standard_pure_GevWmWjsuECIX8pxMTos3A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:FairValueAssetsMeasuredOnNonrecurringBasisValuationTechniquesTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_srt_RangeAxis_srt_MinimumMember_us-gaap_MeasurementInputTypeAxis_us-gaap_MeasurementInputAppraisedValueMember_us-gaap_ValuationTechniqueAxis_nbbk_AppraisalValueComparisonSalesMember_gCK2ydNs5kudvFe7sYiQ3Q",
      "name": "nbbk:CollateralDependentLoansMeasurementInput",
      "unitRef": "Unit_Standard_pure_GevWmWjsuECIX8pxMTos3A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:FairValueAssetsMeasuredOnNonrecurringBasisValuationTechniquesTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R63": {
     "role": "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails",
     "longName": "99940705 - Disclosure - Fair Value Measurements - Estimated Fair Values, Related Carrying Amounts, and Valuation Level of the Financial Instruments (Details)",
     "shortName": "Fair Value Measurements - Estimated Fair Values, Related Carrying Amounts, and Valuation Level of the Financial Instruments (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "63",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:LoansHeldForSaleFairValueDisclosure",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel1Member_OglVSJOCb0qj4hDO0jxUNQ",
      "name": "us-gaap:CashAndCashEquivalentsFairValueDisclosure",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:FairValueByBalanceSheetGroupingTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R64": {
     "role": "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
     "longName": "99940801 - Disclosure - Commitments and Contingencies - Narrative (Details)",
     "shortName": "Commitments and Contingencies - Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "64",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_us-gaap_UnfundedLoanCommitmentMember_67JvGRIaykeJLjnXLqMkiA",
      "name": "us-gaap:OffBalanceSheetCreditLossLiability",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R65": {
     "role": "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesScheduleOfContractAmountsRepresentsOffBalanceSheetDetails",
     "longName": "99940802 - Disclosure - Commitments and Contingencies - Schedule of contract amounts represents off-balance sheet (Details)",
     "shortName": "Commitments and Contingencies - Schedule of contract amounts represents off-balance sheet (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "65",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:FairValueDisclosureOffbalanceSheetRisksAmountLiability",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfFairValueOffBalanceSheetRisksTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:FairValueDisclosureOffbalanceSheetRisksAmountLiability",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfFairValueOffBalanceSheetRisksTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R66": {
     "role": "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails",
     "longName": "99940901 - Disclosure - Derivatives and Hedging Activities - Derivative positions at the dates indicated below for interest rate swaps (Details)",
     "shortName": "Derivatives and Hedging Activities - Derivative positions at the dates indicated below for interest rate swaps (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "66",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:DerivativeNotionalAmount",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfDerivativeInstrumentsTextBlock",
       "us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:DerivativeFairValueOfDerivativeNet",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfDerivativeInstrumentsTextBlock",
       "us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R67": {
     "role": "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesNumberOfPositionsAndTotalNotionalAmountOfNonDesignatedHedgesAndRpasDetails",
     "longName": "99940902 - Disclosure - Derivatives and Hedging Activities - Number of positions and total notional amount of non-designated hedges and RPAs (Details)",
     "shortName": "Derivatives and Hedging Activities - Number of positions and total notional amount of non-designated hedges and RPAs (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "67",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:DerivativeNumberOfInstrumentsHeld",
      "unitRef": "Unit_Standard_instrument_Y2K4Z5f3nEO3QuetmNgJvA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_HedgingDesignationAxis_us-gaap_NondesignatedMember_IO2rj2M_qEGrAvLf84AM7g",
      "name": "us-gaap:DerivativeNotionalAmount",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R68": {
     "role": "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails",
     "longName": "99940903 - Disclosure - Derivatives and Hedging Activities - Derivative Instruments on the Balance Sheet (Details)",
     "shortName": "Derivatives and Hedging Activities - Derivative Instruments on the Balance Sheet (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "68",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_BalanceSheetLocationAxis_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_us-gaap_HedgingDesignationAxis_us-gaap_NondesignatedMember_Ho4AP00JeUu6TSbCdTkv0Q",
      "name": "us-gaap:DerivativeInstrumentsInHedgesAssetsAtFairValue",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_us-gaap_BalanceSheetLocationAxis_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_us-gaap_HedgingDesignationAxis_us-gaap_NondesignatedMember_Ho4AP00JeUu6TSbCdTkv0Q",
      "name": "us-gaap:DerivativeInstrumentsInHedgesAssetsAtFairValue",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R69": {
     "role": "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesConsolidatedStatementsOfIncomeDetails",
     "longName": "99940904 - Disclosure - Derivatives and Hedging Activities - Consolidated Statements of Income (Details)",
     "shortName": "Derivatives and Hedging Activities - Consolidated Statements of Income (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "69",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "nbbk:SwapContractFeesNetOfBrokerageCosts",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "nbbk:SwapContractFeesNetOfBrokerageCosts",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R70": {
     "role": "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails",
     "longName": "99941001 - Disclosure - Other Comprehensive Income - Reconciliation of the Changes (Details)",
     "shortName": "Other Comprehensive Income - Reconciliation of the Changes (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "70",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock",
       "us-gaap:ComprehensiveIncomeNoteTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock",
       "us-gaap:ComprehensiveIncomeNoteTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R71": {
     "role": "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeComponentsDetails",
     "longName": "99941002 - Disclosure - Other Comprehensive Income - Components (Details)",
     "shortName": "Other Comprehensive Income - Components (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "71",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
       "us-gaap:ComprehensiveIncomeNoteTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
       "us-gaap:ComprehensiveIncomeNoteTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R72": {
     "role": "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails",
     "longName": "99941101 - Disclosure - Regulatory Capital Requirements (Details)",
     "shortName": "Regulatory Capital Requirements (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "72",
     "firstAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:Capital",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2026_n0KIYvyukEmt0go5_3_kRg",
      "name": "us-gaap:Capital",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true,
      "unique": true
     }
    },
    "R73": {
     "role": "http://www.needhambank.com/role/DisclosureEarningsPerShareepsNarrativesDetails",
     "longName": "99941201 - Disclosure - Earnings Per Share (\"EPS\") - Narratives (Details)",
     "shortName": "Earnings Per Share (\"EPS\") - Narratives (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "73",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment",
      "unitRef": "Unit_Standard_shares_DC11bt5cfEqHWVvuTufHiQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
       "us-gaap:EarningsPerShareTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
      "unitRef": "Unit_Standard_shares_DC11bt5cfEqHWVvuTufHiQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
       "p",
       "us-gaap:EarningsPerShareTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    },
    "R74": {
     "role": "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails",
     "longName": "99941202 - Disclosure - Earnings Per Share (\"EPS\") - Computation of EPS (Details)",
     "shortName": "Earnings Per Share (\"EPS\") - Computation of EPS (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "74",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:NetIncomeLoss",
      "unitRef": "Unit_Standard_USD_EKWBiE_3nUmwUlEP0PfYNA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2026_To_3_31_2026_Lq5U7HQqoE-P7h1h2-TDkg",
      "name": "us-gaap:WeightedAverageNumberOfSharesIssuedBasic",
      "unitRef": "Unit_Standard_shares_DC11bt5cfEqHWVvuTufHiQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
       "us-gaap:EarningsPerShareTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "nbbk-20260331x10q.htm",
      "unique": true
     }
    }
   },
   "tag": {
    "us-gaap_AccountingPoliciesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AccountingPoliciesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary of Significant Accounting Policies"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AccountsNotesAndLoansReceivableLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AccountsNotesAndLoansReceivableLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accounts, Notes, Loans and Financing Receivable [Line Items]",
        "terseLabel": "Loans Receivable, Allowance for Credit Losses and Credit Quality",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r239",
      "r1152"
     ]
    },
    "us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AccretionAmortizationOfDiscountsAndPremiumsInvestments",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accretion (Amortization) of Discounts and Premiums, Investments",
        "negatedLabel": "Net (accretion) amortization of available-for-sale securities",
        "documentation": "The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method."
       }
      }
     },
     "auth_ref": [
      "r69"
     ]
    },
    "nbbk_AccruedExpensesAndOtherLiabilitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "AccruedExpensesAndOtherLiabilitiesMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the information pertaining to accrued expenses and other liabilities.",
        "label": "Accrued Expenses and Other Liabilities [Member]",
        "terseLabel": "Accrued expenses and other liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_AccruedInterestReceivableFairValueDisclosure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "AccruedInterestReceivableFairValueDisclosure",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fair value portion of accrued interest receivable.",
        "label": "Accrued Interest Receivable, Fair Value Disclosure",
        "terseLabel": "Accrued interest receivable"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AccruedLiabilitiesAndOtherLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AccruedLiabilitiesAndOtherLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accrued Liabilities and Other Liabilities",
        "terseLabel": "Accrued expenses and other liabilities",
        "documentation": "Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other."
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_AccruedRetirementLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "AccruedRetirementLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Carrying amount as of the balance sheet date of the accrued retirement liabilities.",
        "label": "Accrued Retirement Liabilities",
        "terseLabel": "Accrued retirement liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeComponentsDetails": {
       "parentTag": "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeComponentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "AOCI, Debt Securities, Available-for-Sale, Adjustment, after Tax",
        "terseLabel": "Net unrealized holding losses on available-for-sale securities, net of tax",
        "documentation": "Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale)."
       }
      }
     },
     "auth_ref": [
      "r1117"
     ]
    },
    "us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeComponentsDetails": {
       "parentTag": "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeComponentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax",
        "negatedLabel": "Unrecognized director pension plan benefits, net of tax",
        "documentation": "Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit)."
       }
      }
     },
     "auth_ref": [
      "r3",
      "r4",
      "r18",
      "r56",
      "r1265"
     ]
    },
    "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0,
       "order": 6.0
      },
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeComponentsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeComponentsDetails",
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accumulated Other Comprehensive Income (Loss), Net of Tax",
        "terseLabel": "Accumulated other comprehensive loss",
        "totalLabel": "Total accumulated other comprehensive loss",
        "documentation": "Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source."
       }
      }
     },
     "auth_ref": [
      "r17",
      "r18",
      "r57",
      "r158",
      "r731",
      "r750",
      "r751",
      "r1336"
     ]
    },
    "us-gaap_AccumulatedOtherComprehensiveIncomeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AccumulatedOtherComprehensiveIncomeMember",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "AOCI Attributable to Parent [Member]",
        "terseLabel": "Accumulated Other Comprehensive Income (Loss)",
        "documentation": "Accumulated increase (decrease) in equity from transactions and other events and circumstances from non-owner sources, attributable to the parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners."
       }
      }
     },
     "auth_ref": [
      "r2",
      "r13",
      "r18",
      "r599",
      "r602",
      "r659",
      "r746",
      "r747",
      "r1118",
      "r1119",
      "r1120",
      "r1136",
      "r1137",
      "r1138",
      "r1139"
     ]
    },
    "us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AcquiredFiniteLivedIntangibleAssetsLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Intangible Asset, Acquired, Finite-Lived [Line Items]",
        "terseLabel": "Goodwill and Other Intangible Assets",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r321",
      "r322",
      "r323",
      "r325",
      "r753",
      "r852"
     ]
    },
    "ecd_Additional402vDisclosureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "Additional402vDisclosureTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additional 402(v) Disclosure [Text Block]",
        "terseLabel": "Additional 402(v) Disclosure"
       }
      }
     },
     "auth_ref": [
      "r1034"
     ]
    },
    "us-gaap_AdditionalPaidInCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AdditionalPaidInCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additional Paid in Capital",
        "terseLabel": "Additional paid-in capital",
        "documentation": "Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock."
       }
      }
     },
     "auth_ref": [
      "r49",
      "r975",
      "r1387"
     ]
    },
    "us-gaap_AdditionalPaidInCapitalMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AdditionalPaidInCapitalMember",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additional Paid-in Capital [Member]",
        "terseLabel": "Additional Paid-In Capital",
        "documentation": "Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders."
       }
      }
     },
     "auth_ref": [
      "r761",
      "r1136",
      "r1137",
      "r1138",
      "r1139",
      "r1337",
      "r1390"
     ]
    },
    "ecd_AdjToCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AdjToCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment to Compensation Amount",
        "terseLabel": "Adjustment to Compensation, Amount"
       }
      }
     },
     "auth_ref": [
      "r1047"
     ]
    },
    "ecd_AdjToCompAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AdjToCompAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment to Compensation [Axis]",
        "terseLabel": "Adjustment to Compensation:"
       }
      }
     },
     "auth_ref": [
      "r1047"
     ]
    },
    "ecd_AdjToNonPeoNeoCompFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AdjToNonPeoNeoCompFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment to Non-PEO NEO Compensation Footnote [Text Block]",
        "terseLabel": "Adjustment to Non-PEO NEO Compensation Footnote"
       }
      }
     },
     "auth_ref": [
      "r1047"
     ]
    },
    "ecd_AdjToPeoCompFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AdjToPeoCompFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment To PEO Compensation, Footnote [Text Block]",
        "terseLabel": "Adjustment To PEO Compensation, Footnote"
       }
      }
     },
     "auth_ref": [
      "r1047"
     ]
    },
    "us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "APIC, Share-Based Payment Arrangement, Increase for Cost Recognition",
        "terseLabel": "Stock-based compensation",
        "documentation": "Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r414"
     ]
    },
    "us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]",
        "terseLabel": "Adjustments to reconcile net income to net cash from operating activities:"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AdvancePaymentsByBorrowersForTaxesAndInsurance": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AdvancePaymentsByBorrowersForTaxesAndInsurance",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Advance Payments by Borrowers for Taxes and Insurance",
        "terseLabel": "Mortgagors' escrow accounts",
        "documentation": "Carrying amount of accumulated prepayments received by financial institutions from borrowers for taxes (for example, property taxes) and insurance (for example, property and catastrophe) which will periodically be remitted to the appropriate governmental agency or vendor on behalf of the borrower."
       }
      }
     },
     "auth_ref": [
      "r80"
     ]
    },
    "us-gaap_AdvancesFromFederalHomeLoanBanks": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AdvancesFromFederalHomeLoanBanks",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails",
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Advance from Federal Home Loan Bank",
        "terseLabel": "Federal Home Loan Bank (\"FHLB\") borrowings",
        "verboseLabel": "Carrying value of loans pledged to secure advances",
        "documentation": "Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages."
       }
      }
     },
     "auth_ref": [
      "r104"
     ]
    },
    "ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AggtChngPnsnValInSummryCompstnTblForAplblYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member]",
        "terseLabel": "Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table"
       }
      }
     },
     "auth_ref": [
      "r1080"
     ]
    },
    "ecd_AggtErrCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AggtErrCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Erroneous Compensation Amount",
        "terseLabel": "Aggregate Erroneous Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r1006",
      "r1016",
      "r1026",
      "r1058"
     ]
    },
    "ecd_AggtErrCompNotYetDeterminedTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AggtErrCompNotYetDeterminedTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Erroneous Compensation Not Yet Determined [Text Block]",
        "terseLabel": "Aggregate Erroneous Compensation Not Yet Determined"
       }
      }
     },
     "auth_ref": [
      "r1009",
      "r1019",
      "r1029",
      "r1061"
     ]
    },
    "ecd_AggtPnsnAdjsSvcCstMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AggtPnsnAdjsSvcCstMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Pension Adjustments Service Cost [Member]",
        "terseLabel": "Aggregate Pension Adjustments Service Cost"
       }
      }
     },
     "auth_ref": [
      "r1081"
     ]
    },
    "ecd_AllAdjToCompMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AllAdjToCompMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Adjustments to Compensation [Member]",
        "terseLabel": "All Adjustments to Compensation"
       }
      }
     },
     "auth_ref": [
      "r1047"
     ]
    },
    "ecd_AllExecutiveCategoriesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AllExecutiveCategoriesMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Executive Categories [Member]",
        "terseLabel": "All Executive Categories"
       }
      }
     },
     "auth_ref": [
      "r1054"
     ]
    },
    "ecd_AllIndividualsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AllIndividualsMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure",
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure",
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements",
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Individuals [Member]",
        "terseLabel": "All Individuals"
       }
      }
     },
     "auth_ref": [
      "r1010",
      "r1020",
      "r1030",
      "r1054",
      "r1062",
      "r1066",
      "r1074"
     ]
    },
    "ecd_AllTradingArrangementsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AllTradingArrangementsMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Trading Arrangements [Member]",
        "terseLabel": "All Trading Arrangements"
       }
      }
     },
     "auth_ref": [
      "r1072"
     ]
    },
    "us-gaap_AllocatedShareBasedCompensationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AllocatedShareBasedCompensationExpense",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsScheduleOfCompensationExpenseDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share-Based Payment Arrangement, Expense",
        "terseLabel": "Total stock-based compensation expense",
        "verboseLabel": "Stock-based compensation expense",
        "documentation": "Amount of expense for award under share-based payment arrangement. Excludes amount capitalized."
       }
      }
     },
     "auth_ref": [
      "r443",
      "r447",
      "r448"
     ]
    },
    "us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Allowance for Credit Loss [Table Text Block]",
        "terseLabel": "Schedule of the change in the ACL by major loan segment",
        "documentation": "Tabular disclosure of allowance for credit loss on financing receivable."
       }
      }
     },
     "auth_ref": [
      "r1175"
     ]
    },
    "dei_AmendmentFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "AmendmentFlag",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amendment Flag",
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AmortizationOfDeferredLoanOriginationFeesNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AmortizationOfDeferredLoanOriginationFeesNet",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amortization of Deferred Loan Origination Fees, Net",
        "negatedLabel": "Change in net deferred loan origination fees",
        "documentation": "The net increase(decrease) in interest income during the period representing the allocation of deferred loan origination fees less deferred loan origination costs using the effective interest method over the term of the debt arrangement to which they pertain taking into account the effect of prepayments."
       }
      }
     },
     "auth_ref": [
      "r1129",
      "r1151"
     ]
    },
    "us-gaap_AmortizationOfESOPAward": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AmortizationOfESOPAward",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amortization of ESOP Award",
        "terseLabel": "ESOP shares committed to be released",
        "documentation": "Value of shares committed to be released under an Employee Stock Ownership Plan (ESOP)."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AmortizationOfIntangibleAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AmortizationOfIntangibleAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amortization of Intangible Assets",
        "terseLabel": "Amortization expense",
        "verboseLabel": "Amortization of core deposit intangible",
        "documentation": "The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets."
       }
      }
     },
     "auth_ref": [
      "r10",
      "r180",
      "r320",
      "r327",
      "r854",
      "r860",
      "r861",
      "r863",
      "r865"
     ]
    },
    "nbbk_AmountDonatedToCharitableFoundation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "AmountDonatedToCharitableFoundation",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash outflow from amount donated to charitable foundation.",
        "label": "Amount Donated to Charitable Foundation",
        "terseLabel": "Donation in cash to Needham Bank Charitable Foundation"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount",
        "terseLabel": "Antidilutive shares",
        "documentation": "Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented."
       }
      }
     },
     "auth_ref": [
      "r223"
     ]
    },
    "us-gaap_AociLossCashFlowHedgeCumulativeGainLossAfterTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AociLossCashFlowHedgeCumulativeGainLossAfterTax",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeComponentsDetails": {
       "parentTag": "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeComponentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax",
        "terseLabel": "Net unrealized (loss) gain on cash flow hedge, net of tax",
        "documentation": "Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness."
       }
      }
     },
     "auth_ref": [
      "r164"
     ]
    },
    "nbbk_AppraisalValueComparisonSalesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "AppraisalValueComparisonSalesMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Valuation technique calculating appraisal value/ comparison sales.",
        "label": "Appraisal Value/ Comparison Sales [Member]",
        "terseLabel": "Appraisal Value/ Comparison Sales"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AssetBackedSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AssetBackedSecuritiesMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Asset-Backed Securities [Member]",
        "documentation": "Securities that are primarily serviced by the cash flows of a discrete pool of receivables or other financial assets for example, but not limited to, credit card receivables, car loans, recreational vehicle loans, and mobile home loans."
       }
      }
     },
     "auth_ref": [
      "r907",
      "r909",
      "r977",
      "r1159",
      "r1165",
      "r1166"
     ]
    },
    "us-gaap_AssetPledgedAsCollateralMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AssetPledgedAsCollateralMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Asset Pledged as Collateral [Member]",
        "terseLabel": "Investment securities pledged",
        "verboseLabel": "Investment securities pledged",
        "documentation": "Asset pledged as collateral."
       }
      }
     },
     "auth_ref": [
      "r530",
      "r777",
      "r956",
      "r1131",
      "r1132",
      "r1371"
     ]
    },
    "us-gaap_Assets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "Assets",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets",
        "totalLabel": "Total assets",
        "documentation": "Amount of asset recognized for present right to economic benefit."
       }
      }
     },
     "auth_ref": [
      "r77",
      "r106",
      "r157",
      "r192",
      "r195",
      "r196",
      "r227",
      "r233",
      "r236",
      "r237",
      "r280",
      "r343",
      "r344",
      "r345",
      "r346",
      "r347",
      "r348",
      "r349",
      "r350",
      "r351",
      "r530",
      "r535",
      "r646",
      "r707",
      "r708",
      "r728",
      "r796",
      "r874",
      "r875",
      "r905",
      "r975",
      "r979",
      "r980",
      "r993",
      "r1220",
      "r1221",
      "r1363"
     ]
    },
    "us-gaap_AssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AssetsAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets [Abstract]",
        "terseLabel": "Assets"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AssetsFairValueDisclosure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AssetsFairValueDisclosure",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets, Fair Value Disclosure",
        "terseLabel": "Assets",
        "documentation": "Fair value portion of asset recognized for present right to economic benefit."
       }
      }
     },
     "auth_ref": [
      "r613",
      "r614",
      "r964"
     ]
    },
    "us-gaap_AssetsFairValueDisclosureAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AssetsFairValueDisclosureAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets, Fair Value Disclosure [Abstract]",
        "terseLabel": "Assets"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AutomobileLoanMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AutomobileLoanMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Automobile Loan [Member]",
        "terseLabel": "Automobile loans",
        "documentation": "Loan to finance the purchase of a vehicle."
       }
      }
     },
     "auth_ref": [
      "r1149"
     ]
    },
    "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureInvestmentSecuritiesDetailsCalc2": {
       "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax",
        "terseLabel": "Unrealized Gain",
        "documentation": "Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale)."
       }
      }
     },
     "auth_ref": [
      "r252"
     ]
    },
    "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureInvestmentSecuritiesDetailsCalc2": {
       "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax",
        "negatedLabel": "Unrealized Loss",
        "documentation": "Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale)."
       }
      }
     },
     "auth_ref": [
      "r253"
     ]
    },
    "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLossAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]",
        "terseLabel": "Gross Unrealized Losses"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails": {
       "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10",
        "terseLabel": "Over five years to ten years",
        "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach)."
       }
      }
     },
     "auth_ref": [
      "r1162"
     ]
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails": {
       "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10",
        "terseLabel": "Over five years to ten years",
        "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach)."
       }
      }
     },
     "auth_ref": [
      "r259",
      "r714"
     ]
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails": {
       "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five",
        "terseLabel": "Over one year to five years",
        "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach)."
       }
      }
     },
     "auth_ref": [
      "r1161"
     ]
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails": {
       "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five",
        "terseLabel": "Over one year to five years",
        "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach)."
       }
      }
     },
     "auth_ref": [
      "r258",
      "r713"
     ]
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails": {
       "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10",
        "terseLabel": "Over ten years",
        "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach)."
       }
      }
     },
     "auth_ref": [
      "r1163"
     ]
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails": {
       "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10",
        "terseLabel": "Over ten years",
        "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach)."
       }
      }
     },
     "auth_ref": [
      "r260",
      "r715"
     ]
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract]",
        "terseLabel": "Maturities of Debt Securities"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract]",
        "terseLabel": "Fair Value"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value",
        "totalLabel": "Total Maturities",
        "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date."
       }
      }
     },
     "auth_ref": [
      "r1158",
      "r1159",
      "r1376"
     ]
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost",
        "totalLabel": "Total Maturities",
        "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date."
       }
      }
     },
     "auth_ref": [
      "r1158",
      "r1159",
      "r1375"
     ]
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]",
        "terseLabel": "Amortized Cost"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails": {
       "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One",
        "terseLabel": "Within one year",
        "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach)."
       }
      }
     },
     "auth_ref": [
      "r1160"
     ]
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails": {
       "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One",
        "terseLabel": "Within one year",
        "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach)."
       }
      }
     },
     "auth_ref": [
      "r257",
      "r712"
     ]
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost",
        "verboseLabel": "Without single maturity securities",
        "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), without single maturity date and not allocated over maturity grouping."
       }
      }
     },
     "auth_ref": [
      "r1158",
      "r1159"
     ]
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value",
        "verboseLabel": "Without single maturity securities",
        "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), without single maturity date and not allocated over maturity grouping."
       }
      }
     },
     "auth_ref": [
      "r256",
      "r711",
      "r1158"
     ]
    },
    "nbbk_AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureRateOfDepreciation": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureRateOfDepreciation",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This item represents the percentage of aggregate depreciation of the available-for-sale debt securities.",
        "label": "Available-for-Sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Rate of Depreciation",
        "terseLabel": "Percentage of aggregate depreciation"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_AvailableForSaleSecuritiesPledgedToSecureBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "AvailableForSaleSecuritiesPledgedToSecureBorrowings",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Available-for-sale securities, pledged to secure borrowings",
        "label": "Available-for-sale securities, pledged to secure borrowings",
        "terseLabel": "Available-for-sale securities, pledged to secure borrowings"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_AvailableForsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AvailableForsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Number of Positions [Abstract]",
        "terseLabel": "Number of Securities"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_AwardExrcPrice": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardExrcPrice",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Exercise Price",
        "terseLabel": "Exercise Price"
       }
      }
     },
     "auth_ref": [
      "r1069"
     ]
    },
    "ecd_AwardGrantDateFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardGrantDateFairValue",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Grant Date Fair Value",
        "terseLabel": "Fair Value as of Grant Date"
       }
      }
     },
     "auth_ref": [
      "r1070"
     ]
    },
    "ecd_AwardTmgDiscLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardTmgDiscLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing Disclosures [Line Items]",
        "terseLabel": "Award Timing Disclosures"
       }
      }
     },
     "auth_ref": [
      "r1065"
     ]
    },
    "ecd_AwardTmgHowMnpiCnsdrdTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardTmgHowMnpiCnsdrdTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing, How MNPI Considered [Text Block]",
        "terseLabel": "Award Timing, How MNPI Considered"
       }
      }
     },
     "auth_ref": [
      "r1065"
     ]
    },
    "ecd_AwardTmgMethodTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardTmgMethodTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing Method [Text Block]",
        "terseLabel": "Award Timing Method"
       }
      }
     },
     "auth_ref": [
      "r1065"
     ]
    },
    "ecd_AwardTmgMnpiCnsdrdFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardTmgMnpiCnsdrdFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing MNPI Considered [Flag]",
        "terseLabel": "Award Timing MNPI Considered"
       }
      }
     },
     "auth_ref": [
      "r1065"
     ]
    },
    "ecd_AwardTmgMnpiDiscTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardTmgMnpiDiscTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing MNPI Disclosure [Text Block]",
        "terseLabel": "Award Timing MNPI Disclosure"
       }
      }
     },
     "auth_ref": [
      "r1065"
     ]
    },
    "ecd_AwardTmgPredtrmndFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardTmgPredtrmndFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing Predetermined [Flag]",
        "terseLabel": "Award Timing Predetermined"
       }
      }
     },
     "auth_ref": [
      "r1065"
     ]
    },
    "us-gaap_AwardTypeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AwardTypeAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsRestrictedStockAwardActivitiesDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsScheduleOfCompensationExpenseDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails",
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Type [Axis]",
        "terseLabel": "Award Type",
        "documentation": "Information by type of award under share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r416",
      "r417",
      "r418",
      "r419",
      "r420",
      "r421",
      "r422",
      "r423",
      "r424",
      "r425",
      "r426",
      "r427",
      "r428",
      "r429",
      "r430",
      "r431",
      "r432",
      "r433",
      "r434",
      "r435",
      "r436",
      "r438",
      "r439",
      "r440",
      "r441",
      "r442"
     ]
    },
    "ecd_AwardUndrlygSecuritiesAmt": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardUndrlygSecuritiesAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Underlying Securities Amount",
        "terseLabel": "Underlying Securities"
       }
      }
     },
     "auth_ref": [
      "r1068"
     ]
    },
    "ecd_AwardsCloseToMnpiDiscIndName": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardsCloseToMnpiDiscIndName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Awards Close in Time to MNPI Disclosures, Individual Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r1067"
     ]
    },
    "ecd_AwardsCloseToMnpiDiscTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardsCloseToMnpiDiscTable",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Awards Close in Time to MNPI Disclosures [Table]",
        "terseLabel": "Awards Close in Time to MNPI Disclosures"
       }
      }
     },
     "auth_ref": [
      "r1066"
     ]
    },
    "ecd_AwardsCloseToMnpiDiscTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardsCloseToMnpiDiscTableTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Awards Close in Time to MNPI Disclosures [Table Text Block]",
        "terseLabel": "Awards Close in Time to MNPI Disclosures, Table"
       }
      }
     },
     "auth_ref": [
      "r1066"
     ]
    },
    "us-gaap_BalanceSheetLocationAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BalanceSheetLocationAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Balance Sheet Location [Axis]",
        "terseLabel": "Balance Sheet Location [Axis]",
        "documentation": "Information by location in statement of financial position where disaggregated cumulative balance is reported."
       }
      }
     },
     "auth_ref": [
      "r333",
      "r548",
      "r552",
      "r553",
      "r554",
      "r555",
      "r574",
      "r575",
      "r576",
      "r577",
      "r578",
      "r579",
      "r580",
      "r645",
      "r959",
      "r960",
      "r1089",
      "r1381"
     ]
    },
    "us-gaap_BalanceSheetLocationDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BalanceSheetLocationDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Balance Sheet Location [Domain]",
        "terseLabel": "Balance Sheet Location [Domain]",
        "documentation": "Location in statement of financial position where disaggregated cumulative balance is reported."
       }
      }
     },
     "auth_ref": [
      "r333",
      "r548",
      "r552",
      "r553",
      "r554",
      "r555",
      "r574",
      "r575",
      "r576",
      "r577",
      "r578",
      "r579",
      "r580",
      "r645",
      "r959",
      "r960",
      "r1089",
      "r1381"
     ]
    },
    "us-gaap_BankOwnedLifeInsurance": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BankOwnedLifeInsurance",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Assets",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Bank Owned Life Insurance",
        "terseLabel": "Bank-owned life insurance (\"BOLI\")",
        "documentation": "The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy."
       }
      }
     },
     "auth_ref": [
      "r1373"
     ]
    },
    "nbbk_BankOwnedLifeInsuranceFairValueDisclosure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "BankOwnedLifeInsuranceFairValueDisclosure",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fair value portion of bank owned life insurance.",
        "label": "Bank Owned Life Insurance, Fair Value Disclosure",
        "verboseLabel": "Bank owned life insurance (\"BOLI\")"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_BankOwnedLifeInsuranceIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BankOwnedLifeInsuranceIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestIncome",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Bank Owned Life Insurance Income",
        "terseLabel": "Increase in cash surrender value of BOLI",
        "documentation": "Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies."
       }
      }
     },
     "auth_ref": [
      "r91"
     ]
    },
    "us-gaap_BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioCapitalAdequacyMinimum": {
     "xbrltype": "pureItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioCapitalAdequacyMinimum",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum",
        "terseLabel": "Common Equity Tier I Capital (to Risk-Weighted Assets), For minimum capital adequacy purposes, Ratio",
        "documentation": "Ratio of minimum Common Equity Tier 1 risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720",
      "r724"
     ]
    },
    "us-gaap_BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioWellCapitalizedMinimum": {
     "xbrltype": "pureItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioWellCapitalizedMinimum",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum",
        "terseLabel": "Common Equity Tier I Capital (to Risk-Weighted Assets), To be well capitalized under prompt corrective action provisions, Ratio",
        "documentation": "Ratio of minimum Common Equity Tier 1 risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "nbbk_BoatAndRvLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "BoatAndRvLoansMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information relating to Boat and RV loans.",
        "label": "Boat and RV Loans [Member]",
        "terseLabel": "Boat and RV loans"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_BusinessAcquisitionAcquireeDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BusinessAcquisitionAcquireeDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails",
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business Acquisition, Acquiree [Domain]",
        "documentation": "Business combination or series of individually immaterial business combinations."
       }
      }
     },
     "auth_ref": [
      "r317",
      "r321",
      "r322",
      "r323",
      "r324",
      "r325",
      "r474",
      "r475",
      "r476",
      "r477",
      "r478",
      "r479",
      "r480",
      "r481",
      "r482",
      "r483",
      "r484",
      "r485",
      "r486",
      "r487",
      "r488",
      "r489",
      "r490",
      "r491",
      "r492",
      "r493",
      "r494",
      "r495",
      "r496",
      "r497",
      "r498",
      "r499",
      "r500",
      "r501",
      "r502",
      "r503",
      "r504",
      "r505",
      "r506",
      "r507",
      "r508",
      "r509",
      "r510",
      "r511",
      "r512",
      "r513",
      "r514",
      "r515",
      "r516",
      "r517",
      "r518",
      "r519",
      "r520",
      "r521",
      "r522",
      "r523",
      "r524",
      "r525",
      "r526",
      "r753",
      "r913",
      "r914",
      "r1318",
      "r1320",
      "r1321"
     ]
    },
    "us-gaap_BusinessAcquisitionAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BusinessAcquisitionAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails",
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business Acquisition [Axis]",
        "documentation": "Information by business combination or series of individually immaterial business combinations."
       }
      }
     },
     "auth_ref": [
      "r317",
      "r321",
      "r322",
      "r323",
      "r324",
      "r325",
      "r474",
      "r475",
      "r476",
      "r477",
      "r478",
      "r479",
      "r480",
      "r481",
      "r482",
      "r483",
      "r484",
      "r485",
      "r486",
      "r487",
      "r488",
      "r489",
      "r490",
      "r491",
      "r492",
      "r493",
      "r494",
      "r495",
      "r496",
      "r497",
      "r498",
      "r499",
      "r500",
      "r501",
      "r502",
      "r503",
      "r504",
      "r505",
      "r506",
      "r507",
      "r508",
      "r509",
      "r510",
      "r511",
      "r512",
      "r513",
      "r514",
      "r515",
      "r516",
      "r517",
      "r518",
      "r519",
      "r520",
      "r521",
      "r522",
      "r523",
      "r524",
      "r525",
      "r526",
      "r753",
      "r913",
      "r914",
      "r1318",
      "r1320",
      "r1321"
     ]
    },
    "us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares",
        "terseLabel": "Consideration in form of shares",
        "documentation": "Number of shares of equity interest issued or issuable by acquirer as part of consideration transferred in business combination."
       }
      }
     },
     "auth_ref": [
      "r920",
      "r922",
      "r923",
      "r953",
      "r954"
     ]
    },
    "us-gaap_BusinessAcquisitionLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BusinessAcquisitionLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business Acquisition [Line Items]",
        "terseLabel": "Corporate Structure and Nature of Operations Basis of Presentation",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r317",
      "r474",
      "r475",
      "r476",
      "r477",
      "r483",
      "r484",
      "r485",
      "r486",
      "r492",
      "r493",
      "r494",
      "r495",
      "r496",
      "r497",
      "r498",
      "r499",
      "r500",
      "r501",
      "r502",
      "r503",
      "r504",
      "r505",
      "r506",
      "r507",
      "r508",
      "r509",
      "r510",
      "r511",
      "r512",
      "r513",
      "r514",
      "r515",
      "r521",
      "r522",
      "r523",
      "r526",
      "r920",
      "r925",
      "r1318",
      "r1320",
      "r1321"
     ]
    },
    "us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business Combination, Consideration Transferred, Equity Interest",
        "terseLabel": "Consideration paid in shares",
        "documentation": "Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination."
       }
      }
     },
     "auth_ref": [
      "r920",
      "r922",
      "r923",
      "r953",
      "r954"
     ]
    },
    "us-gaap_BusinessCombinationIntegrationRelatedCosts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BusinessCombinationIntegrationRelatedCosts",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestExpense",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business Combination, Integration Related Costs",
        "terseLabel": "Merger and acquisition expenses",
        "documentation": "Amount of expense for integration-related cost incurred in connection with business combination. Includes system integration and conversion costs; severance and other employee-related costs; restructuring and other post-combination costs. Excludes acquisition-related cost incurred to effect business combination; cost to issue debt or equity securities; and cost related to acquisition of asset."
       }
      }
     },
     "auth_ref": [
      "r1319"
     ]
    },
    "nbbk_BusinessCombinationRecognizedAssetAcquiredFinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "BusinessCombinationRecognizedAssetAcquiredFinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable acquired in business combination and recognized at acquisition date.",
        "label": "Business Combination, Recognized Asset Acquired, Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss",
        "terseLabel": "Loans receivable, at fair value"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business Combination, Recognized Asset Acquired, Asset",
        "terseLabel": "Total assets acquired",
        "documentation": "Amount of asset acquired in business combination and recognized at acquisition date."
       }
      }
     },
     "auth_ref": [
      "r499",
      "r504"
     ]
    },
    "nbbk_BusinessCombinationRecognizedLiabilityAssumedDeposits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "BusinessCombinationRecognizedLiabilityAssumedDeposits",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deposits assumed in business combination and recognized at acquisition date.",
        "label": "Business Combination, Recognized Liability Assumed, Deposits",
        "terseLabel": "Total deposits"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_BusinessCombinationsPolicy": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "BusinessCombinationsPolicy",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business Combination [Policy Text Block]",
        "terseLabel": "Business Combinations",
        "documentation": "Disclosure of accounting policy for business combination."
       }
      }
     },
     "auth_ref": [
      "r472",
      "r473",
      "r479",
      "r481",
      "r492",
      "r500",
      "r504",
      "r920",
      "r923",
      "r953",
      "r954"
     ]
    },
    "nbbk_CannabisIndustryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "CannabisIndustryMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the information relating to Cannabis industry.",
        "label": "Cannabis Industry [Member]",
        "terseLabel": "Cannabis industry"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_Capital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "Capital",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Total Capital, Actual",
        "terseLabel": "Total Capital (to Risk-Weighted Assets), Actual Amount",
        "documentation": "Amount of total capital as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_CapitalLeaseObligationsIncurred": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CapitalLeaseObligationsIncurred",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Lease Obligation Incurred",
        "terseLabel": "Increase in operating lease right of use assets and lease liabilities resulting from lease modifications",
        "documentation": "Amount of increase in lease obligation from new lease."
       }
      }
     },
     "auth_ref": [
      "r27",
      "r28"
     ]
    },
    "us-gaap_CapitalRequiredForCapitalAdequacy": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CapitalRequiredForCapitalAdequacy",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum",
        "terseLabel": "Total Capital (to Risk-Weighted Assets), For minimum capital adequacy purposes, Amount",
        "documentation": "Amount of minimum total risk-based capital required for capital adequacy as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720",
      "r724"
     ]
    },
    "us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets": {
     "xbrltype": "pureItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CapitalRequiredForCapitalAdequacyToRiskWeightedAssets",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum",
        "terseLabel": "Total Capital (to Risk-Weighted Assets), For minimum capital adequacy purposes, Ratio",
        "documentation": "Ratio of minimum total risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720",
      "r724"
     ]
    },
    "us-gaap_CapitalRequiredToBeWellCapitalized": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CapitalRequiredToBeWellCapitalized",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Total Risk-Based Capital, Well Capitalized, Minimum",
        "terseLabel": "Total Capital (to Risk-Weighted Assets), To be well capitalized under prompt corrective action provisions, Amount",
        "documentation": "Amount of minimum total risk-based capital categorized as well capitalized as defined by regulatory framework for prompt corrective action."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets": {
     "xbrltype": "pureItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum",
        "terseLabel": "Total Capital (to Risk-Weighted Assets), To be well capitalized under prompt corrective action provisions, Ratio",
        "documentation": "Ratio of minimum total risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_CapitalToRiskWeightedAssets": {
     "xbrltype": "pureItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CapitalToRiskWeightedAssets",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Total Risk-Based Capital Ratio, Actual",
        "terseLabel": "Total Capital (to Risk-Weighted Assets), Actual Ratio",
        "documentation": "Ratio of total risk-based capital to risk-weighted assets as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_CarryingReportedAmountFairValueDisclosureMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CarryingReportedAmountFairValueDisclosureMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reported Value Measurement [Member]",
        "terseLabel": "Carrying Value",
        "documentation": "Measured as reported on the statement of financial position (balance sheet)."
       }
      }
     },
     "auth_ref": [
      "r641",
      "r642",
      "r644",
      "r853",
      "r1358"
     ]
    },
    "us-gaap_CashAndCashEquivalentsFairValueDisclosure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CashAndCashEquivalentsFairValueDisclosure",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash and Cash Equivalents, Fair Value Disclosure",
        "terseLabel": "Cash and cash equivalents",
        "documentation": "Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates."
       }
      }
     },
     "auth_ref": [
      "r639",
      "r641",
      "r642",
      "r1339",
      "r1340"
     ]
    },
    "us-gaap_CashAndDueFromBanks": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CashAndDueFromBanks",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_CashCashEquivalentsAndFederalFundsSold",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash and Due from Banks",
        "terseLabel": "Cash and due from banks",
        "documentation": "For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks."
       }
      }
     },
     "auth_ref": [
      "r76"
     ]
    },
    "us-gaap_CashCashEquivalentsAndFederalFundsSold": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CashCashEquivalentsAndFederalFundsSold",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Assets",
       "weight": 1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash, Cash Equivalents, and Federal Funds Sold",
        "totalLabel": "Total cash and cash equivalents",
        "documentation": "The sum of cash and cash equivalents plus Federal Funds Sold. Cash and cash equivalents consist of short term, highly liquid investments that are readily convertible to known amounts of cash and are so near their maturity that they present negligible risk of changes in value due to changes in interest rates -- usually with an original maturity less than 90 days."
       }
      }
     },
     "auth_ref": [
      "r76",
      "r82",
      "r84"
     ]
    },
    "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents",
        "periodEndLabel": "CASH AND CASH EQUIVALENTS AT END OF PERIOD",
        "periodStartLabel": "CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD",
        "documentation": "Amount of cash and cash equivalent, and cash and cash equivalent restricted to withdrawal or usage; attributable to continuing operation. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate."
       }
      }
     },
     "auth_ref": [
      "r24",
      "r67",
      "r189"
     ]
    },
    "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect",
        "totalLabel": "NET CHANGE IN CASH AND CASH EQUIVALENTS",
        "documentation": "Amount, excluding effect from change in exchange rate, of increase (decrease) in cash and cash equivalent, and cash and cash equivalent restricted to withdrawal or usage; including, but not limited to, discontinued operation. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate."
       }
      }
     },
     "auth_ref": [
      "r1",
      "r67"
     ]
    },
    "us-gaap_CashFlowHedgingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CashFlowHedgingMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash Flow Hedging [Member]",
        "terseLabel": "Cash flow edging",
        "documentation": "Hedge of the exposure to variability in the cash flows of a recognized asset or liability, or of a forecasted transaction, that is attributable to a particular risk."
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_CenturyCannabisMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "CenturyCannabisMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the information pertaining to Century Cannabis.",
        "label": "Century Cannabis [Member]",
        "terseLabel": "Century Cannabis"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_ChangedPeerGroupFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ChangedPeerGroupFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Changed Peer Group, Footnote [Text Block]",
        "terseLabel": "Changed Peer Group, Footnote"
       }
      }
     },
     "auth_ref": [
      "r1045"
     ]
    },
    "ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member]",
        "terseLabel": "Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year"
       }
      }
     },
     "auth_ref": [
      "r1042"
     ]
    },
    "ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member]",
        "terseLabel": "Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested"
       }
      }
     },
     "auth_ref": [
      "r1040"
     ]
    },
    "dei_CityAreaCode": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "CityAreaCode",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "City Area Code",
        "documentation": "Area code of city"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_CoSelectedMeasureAmt": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "CoSelectedMeasureAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Company Selected Measure Amount",
        "terseLabel": "Company Selected Measure Amount"
       }
      }
     },
     "auth_ref": [
      "r1046"
     ]
    },
    "ecd_CoSelectedMeasureName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "CoSelectedMeasureName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Company Selected Measure Name",
        "terseLabel": "Company Selected Measure Name"
       }
      }
     },
     "auth_ref": [
      "r1046"
     ]
    },
    "nbbk_CollateralDependentLoansMeasurementInput": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "CollateralDependentLoansMeasurementInput",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Value of input used to measure collateral-dependent loans.",
        "label": "Collateral Dependent Loans, Measurement Input",
        "terseLabel": "Collateral-dependent (previously known as impaired loans)"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_CollateralDependentLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "CollateralDependentLoansMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the information pertaining to Collateral-dependent loans.",
        "label": "Collateral dependent loans [Member]",
        "terseLabel": "Collateral-dependent loans"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_CollateralDepositAccountsRequireToMaintainToMitigateCounterpartyDefaultRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "CollateralDepositAccountsRequireToMaintainToMitigateCounterpartyDefaultRisk",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesConsolidatedStatementsOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of collateral deposit accounts require to maintain  to mitigate counterparty default risk.",
        "label": "Collateral Deposit Accounts Require to Maintain to Mitigate Counterparty Default Risk",
        "terseLabel": "Collateral deposit accounts require to maintain to mitigate counterparty default risk"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_CollateralizedDebtObligationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CollateralizedDebtObligationsMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Collateralized Debt Obligations [Member]",
        "terseLabel": "Agency collateralized mortgage obligations",
        "verboseLabel": "Agency collateralized mortgage obligations",
        "documentation": "Securities collateralized by a pool of assets."
       }
      }
     },
     "auth_ref": [
      "r964",
      "r966",
      "r967",
      "r1155",
      "r1164",
      "r1247",
      "r1275"
     ]
    },
    "nbbk_CommercialAndIndustrialMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "CommercialAndIndustrialMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commercial And Industrial [Member]",
        "label": "Commercial And Industrial [Member]",
        "terseLabel": "Commercial and industrial"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_CommercialPortfolioSegmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommercialPortfolioSegmentMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Commercial",
        "terseLabel": "Commercial, portfolio",
        "documentation": "Portfolio segment of the company's total financing receivables related to commercial receivables."
       }
      }
     },
     "auth_ref": [
      "r1174",
      "r1176",
      "r1177",
      "r1178",
      "r1179",
      "r1180",
      "r1181"
     ]
    },
    "us-gaap_CommercialRealEstateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommercialRealEstateMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Commercial Real Estate [Member]",
        "terseLabel": "Commercial",
        "verboseLabel": "Commercial real estate",
        "documentation": "Property that is solely used for business purposes."
       }
      }
     },
     "auth_ref": [
      "r877",
      "r889",
      "r1247",
      "r1275"
     ]
    },
    "nbbk_CommercialRealEstatePortfolioSegmentAndCommercialPortfolioSegmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "CommercialRealEstatePortfolioSegmentAndCommercialPortfolioSegmentMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commercial Real Estate Portfolio Segment And Commercial Portfolio Segment [Member].",
        "label": "Commercial Real Estate Portfolio Segment And Commercial Portfolio Segment [Member]",
        "terseLabel": "Commercial real estate and Commercial, portfolio"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_CommercialRealEstatePortfolioSegmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommercialRealEstatePortfolioSegmentMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Commercial Real Estate Portfolio Segment [Member]",
        "terseLabel": "Commercial real estate, portfolio",
        "documentation": "Portfolio segment of the company's total financing receivables related to commercial real estate."
       }
      }
     },
     "auth_ref": [
      "r1174",
      "r1176",
      "r1177",
      "r1178",
      "r1179",
      "r1180",
      "r1181"
     ]
    },
    "us-gaap_CommitmentsAndContingenciesDisclosureAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommitmentsAndContingenciesDisclosureAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Commitments and Contingencies [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommitmentsAndContingenciesDisclosureTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingencies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Commitments and Contingencies Disclosure [Text Block]",
        "terseLabel": "Commitments and Contingencies",
        "documentation": "The entire disclosure for commitments and contingencies."
       }
      }
     },
     "auth_ref": [
      "r71",
      "r334",
      "r335",
      "r848",
      "r1213",
      "r1215"
     ]
    },
    "us-gaap_CommonEquityTierOneCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommonEquityTierOneCapital",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Actual",
        "terseLabel": "Common Equity Tier I Capital (to Risk-Weighted Assets), Actual Amount",
        "documentation": "Amount of Common Equity Tier 1 risk-based capital as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_CommonEquityTierOneCapitalAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommonEquityTierOneCapitalAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Common Equity Tier 1 Risk-Based Capital [Abstract]",
        "terseLabel": "Common Equity Tier I Capital (to Risk-Weighted Assets)"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_CommonEquityTierOneCapitalRatio": {
     "xbrltype": "pureItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommonEquityTierOneCapitalRatio",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual",
        "terseLabel": "Common Equity Tier I Capital (to Risk-Weighted Assets), Actual Ratio",
        "documentation": "Ratio of Common Equity Tier 1 risk-based capital to risk-weighted assets as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_CommonEquityTierOneCapitalRequiredForCapitalAdequacy": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommonEquityTierOneCapitalRequiredForCapitalAdequacy",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Capital Adequacy, Minimum",
        "terseLabel": "Common Equity Tier I Capital (to Risk-Weighted Assets), For minimum capital adequacy purposes, Amount",
        "documentation": "Amount of minimum Common Equity Tier 1 risk-based capital required for capital adequacy as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720",
      "r724"
     ]
    },
    "us-gaap_CommonEquityTierOneCapitalRequiredToBeWellCapitalized": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommonEquityTierOneCapitalRequiredToBeWellCapitalized",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Well Capitalized, Minimum",
        "terseLabel": "Common Equity Tier I Capital (to Risk-Weighted Assets), To be well capitalized under prompt corrective action provisions, Amount",
        "documentation": "Amount of minimum Common Equity Tier 1 risk-based capital categorized as well capitalized as defined by regulatory framework for prompt corrective action."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_CommonStockMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommonStockMember",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Common Stock [Member]",
        "terseLabel": "Common Stock",
        "documentation": "Stock that is subordinate to all other stock of the issuer."
       }
      }
     },
     "auth_ref": [
      "r981",
      "r982",
      "r983",
      "r985",
      "r986",
      "r987",
      "r990",
      "r1136",
      "r1137",
      "r1139",
      "r1337",
      "r1385",
      "r1390"
     ]
    },
    "us-gaap_CommonStockParOrStatedValuePerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommonStockParOrStatedValuePerShare",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheetsParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Common Stock, Par or Stated Value Per Share",
        "terseLabel": "Common Stock, Par or Stated Value Per Share (in dollars per share)",
        "documentation": "Face amount or stated value per share of common stock."
       }
      }
     },
     "auth_ref": [
      "r47"
     ]
    },
    "us-gaap_CommonStockSharesAuthorized": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommonStockSharesAuthorized",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheetsParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Common Stock, Shares Authorized",
        "terseLabel": "Common Stock, Shares Authorized",
        "documentation": "The maximum number of common shares permitted to be issued by an entity's charter and bylaws."
       }
      }
     },
     "auth_ref": [
      "r47",
      "r784"
     ]
    },
    "us-gaap_CommonStockSharesIssued": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommonStockSharesIssued",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheetsParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Common Stock, Shares, Issued",
        "terseLabel": "Common Stock, Shares, Issued",
        "documentation": "Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury."
       }
      }
     },
     "auth_ref": [
      "r47"
     ]
    },
    "us-gaap_CommonStockSharesOutstanding": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommonStockSharesOutstanding",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheetsParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Common Stock, Shares, Outstanding",
        "terseLabel": "Common Stock, Shares, Outstanding",
        "documentation": "Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation."
       }
      }
     },
     "auth_ref": [
      "r14",
      "r47",
      "r784",
      "r802",
      "r1390",
      "r1391"
     ]
    },
    "us-gaap_CommonStockValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CommonStockValue",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Common Stock, Value, Issued",
        "terseLabel": "Common stock, $0.01 par value, 120,000,000 shares authorized; 44,765,178 and 45,770,128 shares issued and outstanding at March 31, 2026 and December 31, 2025, respectively",
        "documentation": "Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity."
       }
      }
     },
     "auth_ref": [
      "r47",
      "r358",
      "r364",
      "r730",
      "r975"
     ]
    },
    "ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "CompActuallyPaidVsCoSelectedMeasureTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compensation Actually Paid vs. Company Selected Measure [Text Block]",
        "terseLabel": "Compensation Actually Paid vs. Company Selected Measure"
       }
      }
     },
     "auth_ref": [
      "r1051"
     ]
    },
    "ecd_CompActuallyPaidVsNetIncomeTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "CompActuallyPaidVsNetIncomeTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compensation Actually Paid vs. Net Income [Text Block]",
        "terseLabel": "Compensation Actually Paid vs. Net Income"
       }
      }
     },
     "auth_ref": [
      "r1050"
     ]
    },
    "ecd_CompActuallyPaidVsOtherMeasureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "CompActuallyPaidVsOtherMeasureTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compensation Actually Paid vs. Other Measure [Text Block]",
        "terseLabel": "Compensation Actually Paid vs. Other Measure"
       }
      }
     },
     "auth_ref": [
      "r1052"
     ]
    },
    "ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "CompActuallyPaidVsTotalShareholderRtnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compensation Actually Paid vs. Total Shareholder Return [Text Block]",
        "terseLabel": "Compensation Actually Paid vs. Total Shareholder Return"
       }
      }
     },
     "auth_ref": [
      "r1049"
     ]
    },
    "us-gaap_CompensationAndRetirementDisclosureAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CompensationAndRetirementDisclosureAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Benefits"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r1377",
      "r1378"
     ]
    },
    "us-gaap_ComprehensiveIncomeNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ComprehensiveIncomeNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfComprehensiveIncome": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Comprehensive Income (Loss), Net of Tax, Attributable to Parent",
        "totalLabel": "TOTAL COMPREHENSIVE INCOME, NET OF TAX",
        "documentation": "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners."
       }
      }
     },
     "auth_ref": [
      "r19",
      "r169",
      "r171",
      "r176",
      "r704",
      "r740",
      "r741"
     ]
    },
    "us-gaap_ComprehensiveIncomeNetOfTaxAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ComprehensiveIncomeNetOfTaxAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income",
        "terseLabel": "OTHER COMPREHENSIVE INCOME, NET OF TAX:"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ComprehensiveIncomeNoteTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ComprehensiveIncomeNoteTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Comprehensive Income (Loss) Note [Text Block]",
        "terseLabel": "Other Comprehensive Income",
        "documentation": "The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income."
       }
      }
     },
     "auth_ref": [
      "r55",
      "r175",
      "r703",
      "r738"
     ]
    },
    "srt_ConsolidatedEntitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ConsolidatedEntitiesAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidated Entities [Axis]",
        "documentation": "Information by consolidated entity or group of entities."
       }
      }
     },
     "auth_ref": [
      "r136",
      "r142",
      "r193",
      "r198",
      "r530",
      "r531",
      "r534",
      "r535",
      "r536",
      "r660",
      "r710",
      "r849",
      "r1104",
      "r1105",
      "r1106",
      "r1219",
      "r1222",
      "r1223"
     ]
    },
    "srt_ConsolidatedEntitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ConsolidatedEntitiesDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidated Entities [Domain]",
        "documentation": "Entity or group of entities consolidated into reporting entity."
       }
      }
     },
     "auth_ref": [
      "r136",
      "r142",
      "r193",
      "r198",
      "r530",
      "r531",
      "r534",
      "r535",
      "r536",
      "r660",
      "r710",
      "r849",
      "r1104",
      "r1105",
      "r1106",
      "r1219",
      "r1222",
      "r1223"
     ]
    },
    "us-gaap_ConstructionLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ConstructionLoansMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Construction Loans [Member]",
        "terseLabel": "Construction &amp; land development",
        "verboseLabel": "Construction &amp; Land Development",
        "documentation": "A borrowing arrangement which provides the entity constructing a facility (such as a building and a landfill) with funds to effect construction, generally on a draw down, or as needed, basis."
       }
      }
     },
     "auth_ref": [
      "r994",
      "r995",
      "r996",
      "r997",
      "r1149"
     ]
    },
    "us-gaap_ConsumerPortfolioSegmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ConsumerPortfolioSegmentMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consumer Portfolio Segment [Member]",
        "terseLabel": "Consumer, portfolio",
        "documentation": "Portfolio segment of the company's total financing receivables related to consumer receivables."
       }
      }
     },
     "auth_ref": [
      "r1174",
      "r1176",
      "r1177",
      "r1178",
      "r1179",
      "r1180",
      "r1181"
     ]
    },
    "us-gaap_ContractualInterestRateReductionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ContractualInterestRateReductionMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contractual Interest Rate Reduction [Member]",
        "terseLabel": "Interest rate reduction",
        "documentation": "Loan modification for a reduction of contractual interest rate."
       }
      }
     },
     "auth_ref": [
      "r241",
      "r242",
      "r244",
      "r877"
     ]
    },
    "us-gaap_ConvertibleDebtSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ConvertibleDebtSecuritiesMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Convertible Debt Securities [Member]",
        "terseLabel": "Corporate bonds",
        "documentation": "Debt securities that can be exchanged for equity of the debt issuer at the option of the issuer or the holder."
       }
      }
     },
     "auth_ref": [
      "r1247",
      "r1275"
     ]
    },
    "nbbk_CoreDeposit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "CoreDeposit",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Deposits",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of core deposit liabilities.",
        "label": "Core Deposit",
        "terseLabel": "Core deposits"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_CoreDepositsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CoreDepositsMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails",
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Core Deposits [Member]",
        "terseLabel": "Core deposit",
        "documentation": "Entity's long-term relationships with depositors, commonly known as core deposit intangibles, which are separate from the financial instruments themselves."
       }
      }
     },
     "auth_ref": [
      "r37",
      "r1203",
      "r1205",
      "r1206",
      "r1207",
      "r1208",
      "r1209",
      "r1211",
      "r1212"
     ]
    },
    "us-gaap_CorporateBondSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CorporateBondSecuritiesMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Corporate Bond Securities [Member]",
        "terseLabel": "Corporate bonds",
        "verboseLabel": "Corporate bonds",
        "documentation": "This category includes information about long-term debt securities that are issued by either a domestic or foreign corporate business entity with a date certain promise of repayment and a return to the holder for the time value of money (for example, variable or fixed interest, original issue discount)."
       }
      }
     },
     "auth_ref": []
    },
    "dei_CoverAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "CoverAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Document and Entity Information",
        "documentation": "Cover page."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_CreditLossStatusAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CreditLossStatusAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit Loss Status [Axis]",
        "documentation": "Information by credit loss status of financial asset."
       }
      }
     },
     "auth_ref": [
      "r1186"
     ]
    },
    "us-gaap_CreditLossStatusDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "CreditLossStatusDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit Loss Status [Domain]",
        "documentation": "Credit loss status of financial asset."
       }
      }
     },
     "auth_ref": [
      "r1186"
     ]
    },
    "dei_CurrentFiscalYearEndDate": {
     "xbrltype": "gMonthDayItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "CurrentFiscalYearEndDate",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current Fiscal Year End Date",
        "documentation": "End date of current fiscal year in the format --MM-DD."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DebtInstrumentInterestRateStatedPercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtInstrumentInterestRateStatedPercentage",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Instrument, Interest Rate, Stated Percentage",
        "terseLabel": "Interest rate",
        "documentation": "Contractual interest rate for funds borrowed, under the debt agreement."
       }
      }
     },
     "auth_ref": [
      "r41",
      "r352"
     ]
    },
    "us-gaap_DebtInstrumentTerm": {
     "xbrltype": "durationItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtInstrumentTerm",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Instrument, Term",
        "terseLabel": "Loan term",
        "documentation": "Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss",
        "terseLabel": "Accrued interest on available-for-sale securities",
        "documentation": "Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale)."
       }
      }
     },
     "auth_ref": [
      "r255",
      "r302",
      "r303",
      "r304"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLossStatementOfFinancialPositionExtensibleList": {
     "xbrltype": "enumerationSetItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLossStatementOfFinancialPositionExtensibleList",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]",
        "documentation": "Indicates line item in statement of financial position that includes accrued interest, after allowance for credit loss, on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale)."
       }
      }
     },
     "auth_ref": [
      "r303"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest",
        "terseLabel": "Allowance for credit loss related to the available for sale portfolio",
        "verboseLabel": "Allowance for Credit Losses",
        "documentation": "Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale)."
       }
      }
     },
     "auth_ref": [
      "r302"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss [Abstract]",
        "terseLabel": "Amortized cost and estimated fair values of securities classified as Available-for-Sale"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureInvestmentSecuritiesDetailsCalc2": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss",
        "totalLabel": "Amortized Cost",
        "documentation": "Amortized cost excluding accrued interest, before allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale)."
       }
      }
     },
     "auth_ref": [
      "r302"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails": {
       "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer",
        "terseLabel": "12 months or more",
        "documentation": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset."
       }
      }
     },
     "auth_ref": [
      "r120",
      "r309",
      "r900"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails": {
       "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss",
        "negatedLabel": "12 months or more",
        "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset."
       }
      }
     },
     "auth_ref": [
      "r120",
      "r309"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails": {
       "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months",
        "terseLabel": "Less than 12 months",
        "documentation": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset."
       }
      }
     },
     "auth_ref": [
      "r120",
      "r309",
      "r900"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails": {
       "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss",
        "negatedLabel": "Less than 12 months",
        "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset."
       }
      }
     },
     "auth_ref": [
      "r120",
      "r309"
     ]
    },
    "nbbk_DebtSecuritiesAvailableForSaleDelinquentAmountAtEndOfPeriod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "DebtSecuritiesAvailableForSaleDelinquentAmountAtEndOfPeriod",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This is the amount of the debt securities available for sale that are considered delinquent (past due) at the end of the period.",
        "label": "Debt Securities, Available For Sale, Delinquent Amount at End of Period",
        "terseLabel": "Securities delinquent on contractual payments"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleExcludingAccruedInterest",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureInvestmentSecuritiesDetailsCalc2": {
       "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Assets",
       "weight": 1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails",
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Excluding Accrued Interest",
        "netLabel": "Fair Value",
        "verboseLabel": "Available-for-sale securities, at fair value",
        "documentation": "Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale)."
       }
      }
     },
     "auth_ref": [
      "r1187"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableForSaleTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale [Table]",
        "documentation": "Disclosure of information about investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale)."
       }
      }
     },
     "auth_ref": [
      "r248",
      "r249",
      "r250",
      "r251",
      "r252",
      "r253",
      "r254",
      "r256",
      "r257",
      "r258",
      "r259",
      "r260"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedGainLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleUnrealizedGainLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Unrealized Gain (Loss)",
        "terseLabel": "Unrealized (losses) gains on available-for-sale securities",
        "documentation": "Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale)."
       }
      }
     },
     "auth_ref": [
      "r1156",
      "r1157"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleUnrealizedLossPosition",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Unrealized Loss Position",
        "totalLabel": "Total",
        "documentation": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss."
       }
      }
     },
     "auth_ref": [
      "r117",
      "r306",
      "r900"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss",
        "negatedTotalLabel": "Total",
        "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset."
       }
      }
     },
     "auth_ref": [
      "r118",
      "r307"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]",
        "terseLabel": "Schedule of fair value and gross unrealized losses, individual securities have been in a continuous unrealized loss position",
        "documentation": "Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset."
       }
      }
     },
     "auth_ref": [
      "r116",
      "r900",
      "r1188"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions": {
     "xbrltype": "integerItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions",
        "terseLabel": "Number of Securities",
        "documentation": "Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset."
       }
      }
     },
     "auth_ref": [
      "r119",
      "r308"
     ]
    },
    "us-gaap_DebtSecuritiesAvailableforSaleUnrealizedLossPositionAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DebtSecuritiesAvailableforSaleUnrealizedLossPositionAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale, Unrealized Loss Position [Abstract]",
        "terseLabel": "Fair Value"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_DeferredCompensationPlansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "DeferredCompensationPlansMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the unfunded, defined contribution, Non-qualified Deferred Compensation Plan.",
        "label": "Deferred Compensation Plans [Member]",
        "terseLabel": "Deferred Compensation Plans"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DeferredIncomeTaxAssetsNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DeferredIncomeTaxAssetsNet",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Assets",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Income Tax Assets, Net",
        "terseLabel": "Deferred income tax asset, net",
        "documentation": "Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting."
       }
      }
     },
     "auth_ref": [
      "r454",
      "r455"
     ]
    },
    "us-gaap_DeferredIncomeTaxExpenseBenefit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DeferredIncomeTaxExpenseBenefit",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0,
       "order": 16.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Income Tax Expense (Benefit)",
        "terseLabel": "Deferred income tax benefit",
        "documentation": "Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations."
       }
      }
     },
     "auth_ref": [
      "r10",
      "r125",
      "r1131",
      "r1135"
     ]
    },
    "us-gaap_DefinedBenefitPlanDisclosureLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DefinedBenefitPlanDisclosureLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDirectorPensionPlanDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeePensionPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Benefit Plan Disclosure [Line Items]",
        "terseLabel": "Employee Benefits",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r379",
      "r380",
      "r381",
      "r382",
      "r384",
      "r386",
      "r387",
      "r388",
      "r389",
      "r390",
      "r391",
      "r392",
      "r393",
      "r394",
      "r395",
      "r396",
      "r397",
      "r398",
      "r399",
      "r401"
     ]
    },
    "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DefinedBenefitPlanNetPeriodicBenefitCost",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDirectorPensionPlanDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeePensionPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit)",
        "terseLabel": "Net periodic pension cost",
        "documentation": "Amount of net periodic benefit cost (credit) for defined benefit plan."
       }
      }
     },
     "auth_ref": [
      "r378",
      "r399",
      "r400",
      "r911",
      "r912"
     ]
    },
    "us-gaap_DefinedContributionPlanCostRecognized": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DefinedContributionPlanCostRecognized",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Contribution Plan, Cost",
        "terseLabel": "Expenses under the plan",
        "documentation": "Amount of cost for defined contribution plan."
       }
      }
     },
     "auth_ref": [
      "r403"
     ]
    },
    "us-gaap_DefinedContributionPlanDisclosureLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DefinedContributionPlanDisclosureLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Contribution Plan Disclosure [Line Items]",
        "terseLabel": "Deferred Compensation Plans",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r403"
     ]
    },
    "us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DefinedContributionPlanEmployerDiscretionaryContributionAmount",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeePensionPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Contribution Plan, Employer Discretionary Contribution Amount",
        "terseLabel": "Employee benefit contribution amount",
        "documentation": "Amount of discretionary contributions made by an employer to a defined contribution plan."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent": {
     "xbrltype": "percentItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DefinedContributionPlanEmployerMatchingContributionPercent",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay",
        "terseLabel": "Percentage of employee's then current base salary being credited to the participant's account annually",
        "documentation": "Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DefinedContributionPlanTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DefinedContributionPlanTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Contribution Plan [Table]",
        "documentation": "Disclosure of information about defined contribution pension plans or defined contribution other postretirement plans, separately for pension plans and other postretirement benefit plans."
       }
      }
     },
     "auth_ref": [
      "r403"
     ]
    },
    "us-gaap_DefinedContributionPlanTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DefinedContributionPlanTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefits"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Contribution Plan [Text Block]",
        "terseLabel": "Employee Benefits",
        "documentation": "The entire disclosure for defined contribution plan."
       }
      }
     },
     "auth_ref": [
      "r402",
      "r403"
     ]
    },
    "us-gaap_Deposits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "Deposits",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deposits.",
        "totalLabel": "Total deposits",
        "documentation": "The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others."
       }
      }
     },
     "auth_ref": [
      "r78"
     ]
    },
    "us-gaap_DepositsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DepositsAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deposits",
        "terseLabel": "Deposits"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration": {
     "xbrltype": "enumerationSetItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative Asset, Statement of Financial Position [Extensible Enumeration]",
        "documentation": "Indicates line item in statement of financial position that includes derivative asset."
       }
      }
     },
     "auth_ref": [
      "r1115"
     ]
    },
    "us-gaap_DerivativeAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative Asset",
        "terseLabel": "Derivative assets",
        "documentation": "Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset."
       }
      }
     },
     "auth_ref": [
      "r159",
      "r160",
      "r594",
      "r613",
      "r614",
      "r629",
      "r639",
      "r641",
      "r642",
      "r764",
      "r765",
      "r766",
      "r767",
      "r768",
      "r770",
      "r771",
      "r773",
      "r774",
      "r775",
      "r790",
      "r791",
      "r830",
      "r835",
      "r836",
      "r837",
      "r838",
      "r839",
      "r853",
      "r855",
      "r857",
      "r858",
      "r859",
      "r964",
      "r967",
      "r974",
      "r983",
      "r1341",
      "r1342",
      "r1343",
      "r1386"
     ]
    },
    "us-gaap_DerivativeAverageFixedInterestRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeAverageFixedInterestRate",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative, Average Fixed Interest Rate",
        "terseLabel": "Weighted Average Rate Current Rate Received",
        "documentation": "Average fixed interest rate related to the group of interest rate derivatives."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DerivativeAverageRemainingMaturity1": {
     "xbrltype": "durationItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeAverageRemainingMaturity1",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative, Average Remaining Maturity",
        "terseLabel": "Weighted Average Maturity",
        "documentation": "Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DerivativeAverageVariableInterestRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeAverageVariableInterestRate",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative, Average Variable Interest Rate",
        "terseLabel": "Weighted Average Rate, Current Rate Paid",
        "documentation": "Average variable interest rate related to the group of interest rate derivatives."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DerivativeContractTypeDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeContractTypeDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesNumberOfPositionsAndTotalNotionalAmountOfNonDesignatedHedgesAndRpasDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative Contract [Domain]",
        "terseLabel": "Derivative Contract [Domain]",
        "documentation": "Financial instrument or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset."
       }
      }
     },
     "auth_ref": [
      "r178",
      "r548",
      "r549",
      "r550",
      "r552",
      "r553",
      "r554",
      "r555",
      "r556",
      "r557",
      "r558",
      "r559",
      "r560",
      "r561",
      "r562",
      "r563",
      "r564",
      "r565",
      "r566",
      "r567",
      "r568",
      "r569",
      "r570",
      "r571",
      "r572",
      "r773",
      "r775",
      "r789",
      "r790",
      "r791",
      "r792",
      "r793",
      "r794",
      "r795",
      "r797",
      "r798",
      "r799",
      "r800",
      "r808",
      "r809",
      "r810",
      "r811",
      "r814",
      "r815",
      "r816",
      "r817",
      "r830",
      "r832",
      "r836",
      "r838",
      "r855",
      "r856",
      "r859",
      "r959",
      "r960",
      "r981",
      "r983",
      "r1108",
      "r1109",
      "r1110",
      "r1111",
      "r1112",
      "r1113",
      "r1114",
      "r1115",
      "r1116",
      "r1332",
      "r1333",
      "r1334",
      "r1335",
      "r1344",
      "r1345",
      "r1346",
      "r1347",
      "r1348",
      "r1349",
      "r1351",
      "r1352"
     ]
    },
    "us-gaap_DerivativeFairValueOfDerivativeNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeFairValueOfDerivativeNet",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative, Fair Value, Net",
        "terseLabel": "Fair Value",
        "documentation": "Fair value of the assets less the liabilities of a derivative or group of derivatives."
       }
      }
     },
     "auth_ref": [
      "r639"
     ]
    },
    "us-gaap_DerivativeInstrumentRiskAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeInstrumentRiskAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesNumberOfPositionsAndTotalNotionalAmountOfNonDesignatedHedgesAndRpasDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative Instrument [Axis]",
        "terseLabel": "Derivative Instrument [Axis]",
        "documentation": "Information by type of derivative contract."
       }
      }
     },
     "auth_ref": [
      "r178",
      "r548",
      "r549",
      "r550",
      "r552",
      "r553",
      "r554",
      "r555",
      "r556",
      "r557",
      "r558",
      "r559",
      "r560",
      "r561",
      "r562",
      "r563",
      "r564",
      "r565",
      "r566",
      "r567",
      "r568",
      "r569",
      "r570",
      "r571",
      "r572",
      "r773",
      "r775",
      "r789",
      "r790",
      "r791",
      "r792",
      "r793",
      "r794",
      "r795",
      "r797",
      "r798",
      "r799",
      "r800",
      "r808",
      "r809",
      "r810",
      "r811",
      "r814",
      "r815",
      "r816",
      "r817",
      "r830",
      "r832",
      "r836",
      "r838",
      "r855",
      "r856",
      "r859",
      "r959",
      "r960",
      "r981",
      "r983",
      "r1108",
      "r1109",
      "r1110",
      "r1111",
      "r1112",
      "r1113",
      "r1114",
      "r1115",
      "r1116",
      "r1332",
      "r1333",
      "r1334",
      "r1335",
      "r1344",
      "r1345",
      "r1346",
      "r1347",
      "r1348",
      "r1349",
      "r1351",
      "r1352"
     ]
    },
    "us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivatives and Hedging Activities"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivities"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative Instruments and Hedging Activities Disclosure [Text Block]",
        "terseLabel": "Derivatives and Hedging Activities",
        "documentation": "The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts."
       }
      }
     },
     "auth_ref": [
      "r537",
      "r538",
      "r539",
      "r540",
      "r541",
      "r542",
      "r543",
      "r544",
      "r545",
      "r546",
      "r547",
      "r581",
      "r582",
      "r583",
      "r584",
      "r585",
      "r586",
      "r587",
      "r588",
      "r589",
      "r590",
      "r591",
      "r592",
      "r593",
      "r596",
      "r608",
      "r959",
      "r960",
      "r961",
      "r962",
      "r963"
     ]
    },
    "us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeInstrumentsGainLossByHedgingRelationshipAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedging Relationship [Axis]",
        "documentation": "Information by type of hedging relationship."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DerivativeInstrumentsInHedgesAssetsAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeInstrumentsInHedgesAssetsAtFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative Instruments in Hedges, Assets, at Fair Value",
        "terseLabel": "Asset Derivatives",
        "documentation": "Aggregate fair value of all derivative assets designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations."
       }
      }
     },
     "auth_ref": [
      "r548",
      "r553",
      "r555",
      "r960",
      "r1328"
     ]
    },
    "us-gaap_DerivativeInstrumentsInHedgesLiabilitiesAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeInstrumentsInHedgesLiabilitiesAtFairValue",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative Instruments in Hedges, Liabilities, at Fair Value",
        "terseLabel": "Liability Derivatives",
        "documentation": "Aggregate fair value of all derivative liabilities designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations."
       }
      }
     },
     "auth_ref": [
      "r548",
      "r553",
      "r555",
      "r960",
      "r1328"
     ]
    },
    "us-gaap_DerivativeLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative Liability",
        "terseLabel": "Derivative liabilities",
        "documentation": "Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset."
       }
      }
     },
     "auth_ref": [
      "r159",
      "r160",
      "r594",
      "r613",
      "r614",
      "r629",
      "r639",
      "r641",
      "r642",
      "r764",
      "r765",
      "r766",
      "r767",
      "r770",
      "r771",
      "r773",
      "r774",
      "r775",
      "r797",
      "r799",
      "r800",
      "r832",
      "r833",
      "r835",
      "r836",
      "r837",
      "r838",
      "r839",
      "r855",
      "r857",
      "r858",
      "r859",
      "r1341",
      "r1342",
      "r1343",
      "r1386"
     ]
    },
    "us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration": {
     "xbrltype": "enumerationSetItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative Liability, Statement of Financial Position [Extensible Enumeration]",
        "documentation": "Indicates line item in statement of financial position that includes derivative liability."
       }
      }
     },
     "auth_ref": [
      "r1115"
     ]
    },
    "us-gaap_DerivativeNotionalAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeNotionalAmount",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesNumberOfPositionsAndTotalNotionalAmountOfNonDesignatedHedgesAndRpasDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative, Notional Amount",
        "verboseLabel": "Notional Amount",
        "documentation": "Nominal or face amount used to calculate payment on derivative."
       }
      }
     },
     "auth_ref": [
      "r959",
      "r1323",
      "r1324"
     ]
    },
    "us-gaap_DerivativeNumberOfInstrumentsHeld": {
     "xbrltype": "integerItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeNumberOfInstrumentsHeld",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesNumberOfPositionsAndTotalNotionalAmountOfNonDesignatedHedgesAndRpasDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative, Number of Instruments Held",
        "terseLabel": "Number of derivative instruments held",
        "documentation": "The number of derivative instruments of a particular group held by the entity."
       }
      }
     },
     "auth_ref": [
      "r774",
      "r830",
      "r831",
      "r834",
      "r983",
      "r1323",
      "r1324"
     ]
    },
    "us-gaap_DerivativeTermOfContract": {
     "xbrltype": "durationItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativeTermOfContract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative, Term of Contract",
        "terseLabel": "Contract term of derivative",
        "documentation": "Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DerivativesFairValueLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DerivativesFairValueLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesNumberOfPositionsAndTotalNotionalAmountOfNonDesignatedHedgesAndRpasDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivatives, Fair Value [Line Items]",
        "terseLabel": "Derivatives and Hedging Activities",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r548",
      "r552",
      "r553",
      "r554",
      "r555",
      "r960"
     ]
    },
    "us-gaap_DesignatedAsHedgingInstrumentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DesignatedAsHedgingInstrumentMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Designated as Hedging Instrument [Member]",
        "terseLabel": "Designated as fair value hedge",
        "documentation": "Derivative instrument designated as hedging instrument under Generally Accepted Accounting Principles (GAAP)."
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_DirectorPensionPlanMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "DirectorPensionPlanMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDirectorPensionPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the information pertaining to Director Pension Plan.",
        "label": "Director Pension Plan [Member]",
        "terseLabel": "Director Pension Plan"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DividendsCommonStock": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DividendsCommonStock",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends, Common Stock",
        "negatedLabel": "Dividends paid",
        "documentation": "Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK)."
       }
      }
     },
     "auth_ref": [
      "r6",
      "r72"
     ]
    },
    "dei_DocumentFiscalPeriodFocus": {
     "xbrltype": "fiscalPeriodItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentFiscalPeriodFocus",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Fiscal Period Focus",
        "documentation": "Fiscal period values are FY, Q1, Q2, and Q3. 1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentFiscalYearFocus": {
     "xbrltype": "gYearItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentFiscalYearFocus",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Fiscal Year Focus",
        "documentation": "This is focus fiscal year of the document report in YYYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentPeriodEndDate": {
     "xbrltype": "dateItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentPeriodEndDate",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Period End Date",
        "documentation": "For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentQuarterlyReport": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentQuarterlyReport",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Quarterly Report",
        "documentation": "Boolean flag that is true only for a form used as an quarterly report."
       }
      }
     },
     "auth_ref": [
      "r1001"
     ]
    },
    "dei_DocumentTransitionReport": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentTransitionReport",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Transition Report",
        "documentation": "Boolean flag that is true only for a form used as a transition report."
       }
      }
     },
     "auth_ref": [
      "r1033"
     ]
    },
    "dei_DocumentType": {
     "xbrltype": "submissionTypeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentType",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Type",
        "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_DomesticCountryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DomesticCountryMember",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Domestic Tax Jurisdiction [Member]",
        "documentation": "Designated federal jurisdiction entitled to levy and collect income tax in country of domicile. Includes, but is not limited to, national jurisdiction for non-U.S. jurisdiction."
       }
      }
     },
     "auth_ref": [
      "r457"
     ]
    },
    "us-gaap_DoubtfulMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "DoubtfulMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Doubtful [Member]",
        "terseLabel": "Doubtful",
        "documentation": "A category of financing receivables that have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable."
       }
      }
     },
     "auth_ref": [
      "r108",
      "r109",
      "r110",
      "r1184",
      "r1185"
     ]
    },
    "ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member]",
        "terseLabel": "Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year"
       }
      }
     },
     "auth_ref": [
      "r1044"
     ]
    },
    "us-gaap_EarningsPerShareAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EarningsPerShareAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Earnings Per Share (\"EPS\")"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_EarningsPerShareBasic": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EarningsPerShareBasic",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Earnings Per Share, Basic",
        "terseLabel": "Earnings per share, basic",
        "verboseLabel": "Basic (in dollars per share)",
        "documentation": "The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period."
       }
      }
     },
     "auth_ref": [
      "r150",
      "r177",
      "r204",
      "r205",
      "r206",
      "r207",
      "r208",
      "r209",
      "r210",
      "r211",
      "r216",
      "r218",
      "r220",
      "r221",
      "r222",
      "r226",
      "r356",
      "r446",
      "r470",
      "r528",
      "r610",
      "r611",
      "r705",
      "r742",
      "r869"
     ]
    },
    "us-gaap_EarningsPerShareDiluted": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EarningsPerShareDiluted",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Earnings Per Share, Diluted",
        "terseLabel": "Earnings per share, diluted",
        "verboseLabel": "Diluted (in dollars per share)",
        "documentation": "The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period."
       }
      }
     },
     "auth_ref": [
      "r150",
      "r177",
      "r204",
      "r205",
      "r206",
      "r207",
      "r208",
      "r209",
      "r210",
      "r211",
      "r218",
      "r220",
      "r221",
      "r222",
      "r226",
      "r356",
      "r446",
      "r470",
      "r528",
      "r610",
      "r611",
      "r705",
      "r742",
      "r869"
     ]
    },
    "us-gaap_EarningsPerShareDilutedAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EarningsPerShareDilutedAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Earnings Per Share, Diluted [Abstract]",
        "terseLabel": "Earnings per common share:"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_EarningsPerShareTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EarningsPerShareTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEarningsPerShareeps"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Earnings Per Share [Text Block]",
        "terseLabel": "Earnings Per Share (\"EPS\")",
        "documentation": "The entire disclosure for earnings per share."
       }
      }
     },
     "auth_ref": [
      "r215",
      "r223",
      "r224",
      "r225"
     ]
    },
    "nbbk_EmployeePensionPlanMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "EmployeePensionPlanMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeePensionPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the information pertaining to Employee Pension Plan.",
        "label": "Employee Pension Plan [Member]",
        "terseLabel": "Employee Pension Plan"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsScheduleOfCompensationExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount",
        "terseLabel": "Unrecognized stock compensation expense",
        "documentation": "Amount of cost not yet recognized for nonvested award under share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r444"
     ]
    },
    "us-gaap_EmployeeStockOptionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeStockOptionMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails",
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Option [Member]",
        "terseLabel": "Employee Stock Option",
        "documentation": "Share-based payment arrangement granting right, subject to vesting and other restrictions, to purchase or sell certain number of shares at predetermined price for specified period of time."
       }
      }
     },
     "auth_ref": [
      "r1286",
      "r1287",
      "r1288",
      "r1289",
      "r1290",
      "r1291",
      "r1292",
      "r1293",
      "r1294",
      "r1295",
      "r1296",
      "r1297",
      "r1298",
      "r1299",
      "r1300",
      "r1301",
      "r1302",
      "r1303",
      "r1304",
      "r1305",
      "r1306",
      "r1307",
      "r1308",
      "r1309",
      "r1310",
      "r1311"
     ]
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeStockOwnershipPlanESOPCompensationExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0,
       "order": 15.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Ownership Plan (ESOP), Compensation Expense",
        "terseLabel": "ESOP expense",
        "documentation": "The amount of plan compensation cost recognized during the period."
       }
      }
     },
     "auth_ref": [
      "r450",
      "r917",
      "r918"
     ]
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPDebtStructureIndirectLoanAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeStockOwnershipPlanESOPDebtStructureIndirectLoanAmount",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Ownership Plan (ESOP), Debt Structure, Indirect Loan, Amount",
        "documentation": "The amount reported as a liability as of the balance sheet date by the entity (the employer) of the loan made by a third-party lender to the employer relating to loans made by the employer to the ESOP."
       }
      }
     },
     "auth_ref": [
      "r1312"
     ]
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPDeferredSharesFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeStockOwnershipPlanESOPDeferredSharesFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Ownership Plan (ESOP), Deferred Shares, Fair Value",
        "verboseLabel": "Fair value of unallocated shares",
        "documentation": "Fair value of unearned shares held by the employee stock ownership plan (ESOP)."
       }
      }
     },
     "auth_ref": [
      "r452",
      "r917",
      "r918"
     ]
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Ownership Plan (ESOP) Name [Axis]",
        "documentation": "Information by name of employee stock ownership plan."
       }
      }
     },
     "auth_ref": [
      "r1315"
     ]
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeStockOwnershipPlanESOPDisclosuresLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r1315"
     ]
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails": {
       "parentTag": "us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Ownership Plan (ESOP), Number of Allocated Shares",
        "terseLabel": "Allocated shares",
        "documentation": "The shares or units in an ESOP trust that have been assigned to individual participant accounts based on a known formula. IRS rules require allocations to be nondiscriminatory generally based on compensation, length of service, or a combination of both. For any particular participant such shares or units may be vested, unvested, or partially vested."
       }
      }
     },
     "auth_ref": [
      "r451",
      "r917",
      "r918"
     ]
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails": {
       "parentTag": "us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Ownership Plan (ESOP), Number of Committed-to-be-Released Shares",
        "terseLabel": "Shares committed to be released",
        "documentation": "The shares that, although not legally released, will be released by a future scheduled and committed debt service payment and will be allocated to employees for service rendered in the current accounting period. The ESOP documents typically define the period of service to which the shares relate. ESOP shares are released to compensate employees directly, to settle employer liabilities for other employee benefits, and to replace dividends on allocated shares that are used for debt service."
       }
      }
     },
     "auth_ref": [
      "r451",
      "r917",
      "r918"
     ]
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPNumberOfSuspenseShares": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeStockOwnershipPlanESOPNumberOfSuspenseShares",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails": {
       "parentTag": "us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Ownership Plan (ESOP), Number of Suspense Shares",
        "terseLabel": "Unallocated shares",
        "documentation": "Shares contributed to the ESOP that have not yet been released, committed to be released, or allocated to participant accounts. Suspense shares generally collateralize ESOP debt."
       }
      }
     },
     "auth_ref": [
      "r451",
      "r917",
      "r918"
     ]
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPPlanDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeStockOwnershipPlanESOPPlanDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Ownership Plan (ESOP), Plan [Domain]",
        "documentation": "Entities identify multiple employee stock ownership plans by unique name."
       }
      }
     },
     "auth_ref": [
      "r1315"
     ]
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPSharesContributedToESOP": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeStockOwnershipPlanESOPSharesContributedToESOP",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Ownership Plan (ESOP), Shares Contributed to ESOP",
        "terseLabel": "ESOP shares committed to be released",
        "documentation": "This item represents the number of shares provided to the Employee Stock Ownership Plan (ESOP) during the period."
       }
      }
     },
     "auth_ref": [
      "r1314"
     ]
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeStockOwnershipPlanESOPSharesInESOP",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Ownership Plan (ESOP), Shares in ESOP",
        "totalLabel": "Total shares",
        "documentation": "Sum of the allocated, committed-to-be-released and suspense shares of the entity held by the plan."
       }
      }
     },
     "auth_ref": [
      "r917",
      "r918",
      "r1315"
     ]
    },
    "nbbk_EmployeeStockOwnershipPlanMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "EmployeeStockOwnershipPlanMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the information pertaining to Employee Stock Ownership Plan.",
        "label": "Employee Stock Ownership Plan [Member]",
        "terseLabel": "Employee Stock Ownership Plan"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressAddressLine1": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressAddressLine1",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Address Line One",
        "documentation": "Address Line 1 such as Attn, Building Name, Street Name"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressCityOrTown": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressCityOrTown",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, City or Town",
        "documentation": "Name of the City or Town"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressPostalZipCode": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressPostalZipCode",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Postal Zip Code",
        "documentation": "Code for the postal or zip code"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressStateOrProvince": {
     "xbrltype": "stateOrProvinceItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressStateOrProvince",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address State Or Province",
        "documentation": "Name of the state or province."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityCentralIndexKey": {
     "xbrltype": "centralIndexKeyItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityCentralIndexKey",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Central Index Key",
        "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK."
       }
      }
     },
     "auth_ref": [
      "r999"
     ]
    },
    "dei_EntityCommonStockSharesOutstanding": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityCommonStockSharesOutstanding",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Common Stock, Shares Outstanding",
        "documentation": "Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityCurrentReportingStatus": {
     "xbrltype": "yesNoItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityCurrentReportingStatus",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Current Reporting Status",
        "documentation": "Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityEmergingGrowthCompany": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityEmergingGrowthCompany",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Emerging Growth Company",
        "documentation": "Indicate if registrant meets the emerging growth company criteria."
       }
      }
     },
     "auth_ref": [
      "r999"
     ]
    },
    "dei_EntityExTransitionPeriod": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityExTransitionPeriod",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Ex Transition Period",
        "documentation": "Indicate if an emerging growth company has elected not to use the extended transition period for complying with any new or revised financial accounting standards."
       }
      }
     },
     "auth_ref": [
      "r1084"
     ]
    },
    "dei_EntityFileNumber": {
     "xbrltype": "fileNumberItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityFileNumber",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity File Number",
        "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityFilerCategory": {
     "xbrltype": "filerCategoryItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityFilerCategory",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Filer Category",
        "documentation": "Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure."
       }
      }
     },
     "auth_ref": [
      "r999"
     ]
    },
    "dei_EntityIncorporationStateCountryCode": {
     "xbrltype": "edgarStateCountryItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityIncorporationStateCountryCode",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Incorporation, State or Country Code",
        "documentation": "Two-character EDGAR code representing the state or country of incorporation."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityInteractiveDataCurrent": {
     "xbrltype": "yesNoItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityInteractiveDataCurrent",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Interactive Data Current",
        "documentation": "Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files)."
       }
      }
     },
     "auth_ref": [
      "r1083"
     ]
    },
    "dei_EntityRegistrantName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityRegistrantName",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Registrant Name",
        "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC."
       }
      }
     },
     "auth_ref": [
      "r999"
     ]
    },
    "dei_EntityShellCompany": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityShellCompany",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Shell Company",
        "documentation": "Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act."
       }
      }
     },
     "auth_ref": [
      "r999"
     ]
    },
    "dei_EntitySmallBusiness": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntitySmallBusiness",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Small Business",
        "documentation": "Indicates that the company is a Smaller Reporting Company (SRC)."
       }
      }
     },
     "auth_ref": [
      "r999"
     ]
    },
    "dei_EntityTaxIdentificationNumber": {
     "xbrltype": "employerIdItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityTaxIdentificationNumber",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Tax Identification Number",
        "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS."
       }
      }
     },
     "auth_ref": [
      "r999"
     ]
    },
    "ecd_EqtyAwrdsAdjFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "EqtyAwrdsAdjFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Awards Adjustments, Footnote [Text Block]",
        "terseLabel": "Equity Awards Adjustments, Footnote"
       }
      }
     },
     "auth_ref": [
      "r1038"
     ]
    },
    "ecd_EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member]",
        "terseLabel": "Equity Awards Adjustments, Excluding Value Reported in Compensation Table"
       }
      }
     },
     "auth_ref": [
      "r1079"
     ]
    },
    "ecd_EqtyAwrdsAdjsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "EqtyAwrdsAdjsMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Awards Adjustments [Member]",
        "terseLabel": "Equity Awards Adjustments"
       }
      }
     },
     "auth_ref": [
      "r1079"
     ]
    },
    "ecd_EqtyAwrdsInSummryCompstnTblForAplblYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "EqtyAwrdsInSummryCompstnTblForAplblYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member]",
        "terseLabel": "Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table"
       }
      }
     },
     "auth_ref": [
      "r1079"
     ]
    },
    "us-gaap_EquityComponentDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EquityComponentDomain",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Component [Domain]",
        "terseLabel": "Equity Component [Domain]",
        "documentation": "Components of equity are the parts of the total Equity balance including that which is allocated to common, preferred, treasury stock, retained earnings, etc."
       }
      }
     },
     "auth_ref": [
      "r14",
      "r148",
      "r149",
      "r150",
      "r172",
      "r173",
      "r174",
      "r199",
      "r200",
      "r201",
      "r203",
      "r210",
      "r212",
      "r214",
      "r228",
      "r281",
      "r282",
      "r332",
      "r355",
      "r368",
      "r446",
      "r462",
      "r463",
      "r467",
      "r468",
      "r469",
      "r471",
      "r527",
      "r528",
      "r598",
      "r599",
      "r600",
      "r601",
      "r602",
      "r603",
      "r604",
      "r605",
      "r606",
      "r607",
      "r609",
      "r648",
      "r650",
      "r651",
      "r652",
      "r653",
      "r654",
      "r656",
      "r657",
      "r659",
      "r738",
      "r746",
      "r747",
      "r748",
      "r761",
      "r820"
     ]
    },
    "nbbk_EquityIncentivePlan2025Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "EquityIncentivePlan2025Member",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the information pertaining to 2025 Equity Incentive Plan.",
        "label": "Equity Incentive Plan 2025 [Member]",
        "terseLabel": "Equity Incentive Plan 2025"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_EquitySecuritiesByIndustryAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EquitySecuritiesByIndustryAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Industry Sector [Axis]",
        "documentation": "Information by industry sector, examples include but are not limited to, commercial, industrial, agricultural, financial services, technology, healthcare and real estate."
       }
      }
     },
     "auth_ref": [
      "r766",
      "r769",
      "r772",
      "r824",
      "r826",
      "r829",
      "r841",
      "r886",
      "r887",
      "r964",
      "r966",
      "r967",
      "r983"
     ]
    },
    "us-gaap_EquitySecuritiesIndustryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EquitySecuritiesIndustryMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Industry Sector [Domain]",
        "documentation": "Industry sector consisting of government, private and corporate entities engaged in business activities, including but not limited to, commercial, industrial, agricultural, financial services, technology, healthcare and real estate."
       }
      }
     },
     "auth_ref": [
      "r766",
      "r769",
      "r772",
      "r824",
      "r826",
      "r829",
      "r841",
      "r886",
      "r887",
      "r964",
      "r966",
      "r967",
      "r983"
     ]
    },
    "ecd_EquityValuationAssumptionDifferenceFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "EquityValuationAssumptionDifferenceFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Valuation Assumption Difference, Footnote [Text Block]",
        "terseLabel": "Equity Valuation Assumption Difference, Footnote"
       }
      }
     },
     "auth_ref": [
      "r1048"
     ]
    },
    "ecd_ErrCompAnalysisTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ErrCompAnalysisTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Erroneous Compensation Analysis [Text Block]",
        "terseLabel": "Erroneous Compensation Analysis"
       }
      }
     },
     "auth_ref": [
      "r1006",
      "r1016",
      "r1026",
      "r1058"
     ]
    },
    "ecd_ErrCompRecoveryTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ErrCompRecoveryTable",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Erroneously Awarded Compensation Recovery [Table]",
        "terseLabel": "Erroneously Awarded Compensation Recovery"
       }
      }
     },
     "auth_ref": [
      "r1003",
      "r1013",
      "r1023",
      "r1055"
     ]
    },
    "us-gaap_EstimateOfFairValueFairValueDisclosureMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EstimateOfFairValueFairValueDisclosureMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Estimate of Fair Value Measurement [Member]",
        "terseLabel": "Fair Value",
        "documentation": "Measured as an estimate of fair value."
       }
      }
     },
     "auth_ref": [
      "r353",
      "r639",
      "r641",
      "r644",
      "r853",
      "r903",
      "r904"
     ]
    },
    "ecd_ExecutiveCategoryAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ExecutiveCategoryAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Executive Category [Axis]",
        "terseLabel": "Executive Category:"
       }
      }
     },
     "auth_ref": [
      "r1054"
     ]
    },
    "nbbk_FairValueAdjustmentsOfLoanHedgeNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "FairValueAdjustmentsOfLoanHedgeNet",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of expense (income) related to loan hedge fair value adjustments, net.",
        "label": "Fair Value Adjustments of Loan Hedge, Net",
        "terseLabel": "Loan hedge fair value adjustments, net"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]",
        "terseLabel": "Fair Value Measurements",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r613",
      "r614",
      "r629",
      "r964"
     ]
    },
    "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, Recurring and Nonrecurring [Table]",
        "documentation": "Disclosure of information about asset and liability measured at fair value on recurring and nonrecurring basis."
       }
      }
     },
     "auth_ref": [
      "r613",
      "r614",
      "r629",
      "r964"
     ]
    },
    "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value Measurement Inputs and Valuation Techniques [Line Items]",
        "terseLabel": "Fair Value Measurements",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r616",
      "r617",
      "r618",
      "r920",
      "r924",
      "r967"
     ]
    },
    "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value Measurement Inputs and Valuation Techniques [Table]",
        "documentation": "Disclosure of information about input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis."
       }
      }
     },
     "auth_ref": [
      "r616",
      "r617",
      "r618",
      "r920",
      "r924",
      "r967"
     ]
    },
    "us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueAssetsMeasuredOnNonrecurringBasisTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value Measurements, Nonrecurring [Table Text Block]",
        "terseLabel": "Summary of assets measured at fair value on a non-recurring basis",
        "documentation": "Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3)."
       }
      }
     },
     "auth_ref": [
      "r1339",
      "r1340"
     ]
    },
    "us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisValuationTechniquesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueAssetsMeasuredOnNonrecurringBasisValuationTechniquesTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]",
        "terseLabel": "Summary of significant unobservable inputs used in the fair value measurements for Level 3 assets and liabilities measured at fair value on a nonrecurring basis",
        "documentation": "Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique used to measure similar asset in prior period by class of asset or liability on non-recurring basis."
       }
      }
     },
     "auth_ref": [
      "r615"
     ]
    },
    "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Asset Class [Domain]",
        "documentation": "Class of asset."
       }
      }
     },
     "auth_ref": [
      "r619",
      "r620",
      "r621",
      "r622",
      "r623",
      "r624",
      "r630",
      "r853",
      "r966",
      "r974"
     ]
    },
    "us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]",
        "terseLabel": "Fair Value Measurements",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r639",
      "r641",
      "r642",
      "r853",
      "r974",
      "r1358"
     ]
    },
    "us-gaap_FairValueByAssetClassAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueByAssetClassAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Asset Class [Axis]",
        "documentation": "Information by class of asset."
       }
      }
     },
     "auth_ref": [
      "r619",
      "r620",
      "r621",
      "r622",
      "r623",
      "r624",
      "r630",
      "r853",
      "r966",
      "r974"
     ]
    },
    "us-gaap_FairValueByBalanceSheetGroupingTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueByBalanceSheetGroupingTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, by Balance Sheet Grouping [Table]",
        "documentation": "Disclosure of information about the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities."
       }
      }
     },
     "auth_ref": [
      "r639",
      "r642",
      "r853",
      "r974",
      "r1356",
      "r1358"
     ]
    },
    "us-gaap_FairValueByBalanceSheetGroupingTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueByBalanceSheetGroupingTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, by Balance Sheet Grouping [Table Text Block]",
        "terseLabel": "Summary of estimated fair values, related carrying amounts, and valuation level of the financial instruments",
        "documentation": "Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities."
       }
      }
     },
     "auth_ref": [
      "r640",
      "r643",
      "r853",
      "r974",
      "r1358"
     ]
    },
    "us-gaap_FairValueByFairValueHierarchyLevelAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueByFairValueHierarchyLevelAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value Hierarchy and NAV [Axis]",
        "documentation": "Information by level within fair value hierarchy and fair value measured at net asset value per share as practical expedient."
       }
      }
     },
     "auth_ref": [
      "r353",
      "r372",
      "r373",
      "r374",
      "r375",
      "r376",
      "r377",
      "r383",
      "r384",
      "r612",
      "r614",
      "r616",
      "r617",
      "r618",
      "r627",
      "r629",
      "r631",
      "r639",
      "r664",
      "r665",
      "r666",
      "r853",
      "r903",
      "r904",
      "r907",
      "r908",
      "r909",
      "r910",
      "r911",
      "r964",
      "r967",
      "r974"
     ]
    },
    "nbbk_FairValueByMeasurementAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "FairValueByMeasurementAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by measurement basis.",
        "label": "Fair Value By Measurement [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_FairValueByMeasurementDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "FairValueByMeasurementDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Measurement basis, for example, but not limited to, reported value, fair value, portion at fair value, portion at other than fair value.",
        "label": "Fair Value By Measurement [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FairValueByMeasurementFrequencyAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueByMeasurementFrequencyAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measurement Frequency [Axis]",
        "documentation": "Information by measurement frequency."
       }
      }
     },
     "auth_ref": [
      "r613",
      "r614",
      "r616",
      "r618",
      "r964",
      "r1342",
      "r1353"
     ]
    },
    "us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountLiability": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueDisclosureOffbalanceSheetRisksAmountLiability",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesScheduleOfContractAmountsRepresentsOffBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability",
        "terseLabel": "Amount of financial instruments represents off-balance sheet credit risk",
        "documentation": "The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition."
       }
      }
     },
     "auth_ref": [
      "r639",
      "r641"
     ]
    },
    "us-gaap_FairValueDisclosuresAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueDisclosuresAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value Measurements"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FairValueDisclosuresTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueDisclosuresTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value Disclosures [Text Block]",
        "terseLabel": "Fair Value Measurements",
        "documentation": "The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information."
       }
      }
     },
     "auth_ref": [
      "r616",
      "r623",
      "r625",
      "r626",
      "r627",
      "r631",
      "r632",
      "r633",
      "r634",
      "r635",
      "r697",
      "r964",
      "r968"
     ]
    },
    "us-gaap_FairValueInputsLevel1Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueInputsLevel1Member",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, Inputs, Level 1 [Member]",
        "terseLabel": "Level 1",
        "documentation": "Quoted prices in active markets for identical assets or liabilities that the reporting entity can access at the measurement date."
       }
      }
     },
     "auth_ref": [
      "r353",
      "r372",
      "r377",
      "r383",
      "r614",
      "r629",
      "r639",
      "r664",
      "r853",
      "r907",
      "r908",
      "r909",
      "r910",
      "r911",
      "r964",
      "r974"
     ]
    },
    "us-gaap_FairValueInputsLevel2Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueInputsLevel2Member",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, Inputs, Level 2 [Member]",
        "terseLabel": "Level 2",
        "documentation": "Inputs other than quoted prices included within level 1 that are observable for an asset or liability, either directly or indirectly, including, but not limited to, quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets or liabilities in inactive markets."
       }
      }
     },
     "auth_ref": [
      "r353",
      "r372",
      "r377",
      "r383",
      "r385",
      "r614",
      "r616",
      "r629",
      "r639",
      "r665",
      "r853",
      "r903",
      "r904",
      "r907",
      "r908",
      "r909",
      "r910",
      "r911",
      "r964",
      "r974"
     ]
    },
    "us-gaap_FairValueInputsLevel3Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueInputsLevel3Member",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, Inputs, Level 3 [Member]",
        "terseLabel": "Level 3",
        "documentation": "Unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing."
       }
      }
     },
     "auth_ref": [
      "r353",
      "r372",
      "r373",
      "r374",
      "r375",
      "r376",
      "r377",
      "r383",
      "r384",
      "r614",
      "r616",
      "r617",
      "r618",
      "r629",
      "r639",
      "r666",
      "r853",
      "r903",
      "r904",
      "r907",
      "r908",
      "r909",
      "r910",
      "r911",
      "r964",
      "r967",
      "r974"
     ]
    },
    "us-gaap_FairValueMeasurementFrequencyDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueMeasurementFrequencyDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measurement Frequency [Domain]",
        "documentation": "Measurement frequency."
       }
      }
     },
     "auth_ref": [
      "r613",
      "r614",
      "r616",
      "r618",
      "r964",
      "r1342",
      "r1353"
     ]
    },
    "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases",
        "terseLabel": "Purchase in level 3 subordinated debentures",
        "documentation": "Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing."
       }
      }
     },
     "auth_ref": [
      "r622",
      "r628",
      "r630",
      "r966"
     ]
    },
    "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales",
        "terseLabel": "Sale in level 3 assets",
        "documentation": "Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing."
       }
      }
     },
     "auth_ref": [
      "r622",
      "r630",
      "r966"
     ]
    },
    "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net",
        "terseLabel": "Transfers in level 3 assets",
        "documentation": "Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy."
       }
      }
     },
     "auth_ref": [
      "r1348",
      "r1352"
     ]
    },
    "us-gaap_FairValueMeasurementsFairValueHierarchyDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueMeasurementsFairValueHierarchyDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value Hierarchy and NAV [Domain]",
        "documentation": "Categories used to prioritize the inputs to valuation techniques to measure fair value."
       }
      }
     },
     "auth_ref": [
      "r353",
      "r372",
      "r373",
      "r374",
      "r375",
      "r376",
      "r377",
      "r383",
      "r384",
      "r612",
      "r614",
      "r616",
      "r617",
      "r618",
      "r627",
      "r629",
      "r631",
      "r639",
      "r664",
      "r665",
      "r666",
      "r853",
      "r903",
      "r904",
      "r907",
      "r908",
      "r909",
      "r910",
      "r911",
      "r964",
      "r967",
      "r974"
     ]
    },
    "us-gaap_FairValueMeasurementsNonrecurringMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueMeasurementsNonrecurringMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, Nonrecurring [Member]",
        "terseLabel": "Non-recurring",
        "documentation": "Infrequent fair value measurement. Includes, but is not limited to, fair value adjustment for impairment of asset, liability or equity, not frequently measured at fair value."
       }
      }
     },
     "auth_ref": [
      "r613",
      "r614",
      "r616",
      "r618",
      "r964",
      "r1342"
     ]
    },
    "us-gaap_FairValueMeasurementsRecurringMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValueMeasurementsRecurringMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value, Recurring [Member]",
        "terseLabel": "Recurring",
        "documentation": "Frequent fair value measurement. Includes, but is not limited to, fair value adjustment for impairment of asset, liability or equity, frequently measured at fair value."
       }
      }
     },
     "auth_ref": [
      "r964",
      "r1339",
      "r1340",
      "r1341",
      "r1342",
      "r1343",
      "r1353"
     ]
    },
    "us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesNumberOfPositionsAndTotalNotionalAmountOfNonDesignatedHedgesAndRpasDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]",
        "terseLabel": "Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]",
        "documentation": "Disclosure of information about location and fair value of derivative instrument and nonderivative instrument designated as hedging instrument."
       }
      }
     },
     "auth_ref": [
      "r548",
      "r552",
      "r553",
      "r554",
      "r555",
      "r960"
     ]
    },
    "us-gaap_FederalDepositInsuranceCorporationPremiumExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FederalDepositInsuranceCorporationPremiumExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestExpense",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Federal Deposit Insurance Corporation Premium Expense",
        "terseLabel": "FDIC and state insurance assessments",
        "documentation": "Amount of expense for Federal Deposit Insurance Corporation (FDIC) insurance."
       }
      }
     },
     "auth_ref": [
      "r92"
     ]
    },
    "us-gaap_FederalFundsSold": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FederalFundsSold",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_CashCashEquivalentsAndFederalFundsSold",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Federal Funds Sold",
        "terseLabel": "Federal funds sold",
        "documentation": "The amount outstanding of funds lent to other depository institutions, securities brokers, or securities dealers in the form of Federal Funds sold; for example, immediately available funds lent under agreements or contracts that mature in one business day or roll over under a continuing contract, regardless of the nature of the transaction or the collateral involved, excluding overnight lending for commercial and industrial purposes. Also include Federal Funds sold under agreements to resell on a gross basis, excluding (1) sales of term Federal Funds, (2) due bills representing purchases of securities or other assets by the reporting bank that have not yet been delivered and similar instruments, (3) resale agreements that mature in more than one business day involving assets other than securities, and (4) yield maintenance dollar repurchase agreements."
       }
      }
     },
     "auth_ref": [
      "r84"
     ]
    },
    "us-gaap_FederalHomeLoanBankAdvancesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FederalHomeLoanBankAdvancesMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Federal Home Loan Bank Advances [Member]",
        "terseLabel": "Borrowings with the Federal Reserve Bank",
        "verboseLabel": "FHLB",
        "documentation": "Borrowings from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and also in times of liquidity shortages. The member institution executes a promissory note, which is generally collateralized by government securities to the Federal Reserve or loans."
       }
      }
     },
     "auth_ref": [
      "r79"
     ]
    },
    "us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FederalHomeLoanBankBorrowingsFairValueDisclosure",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Federal Home Loan Bank Borrowings, Fair Value Disclosure",
        "terseLabel": "FHLB borrowings",
        "documentation": "Fair value portion of borrowing from Federal Home Loan Bank (FHLBank)."
       }
      }
     },
     "auth_ref": [
      "r79",
      "r1339",
      "r1340",
      "r1350",
      "r1354",
      "r1356",
      "r1357",
      "r1359"
     ]
    },
    "us-gaap_FeesAndCommissionsMortgageBankingAndServicing": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FeesAndCommissionsMortgageBankingAndServicing",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestIncome",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fees and Commissions, Mortgage Banking and Servicing",
        "terseLabel": "Mortgage banking income",
        "documentation": "Income from mortgage banking activities (fees and commissions) and servicing real estate mortgages, credit cards, and other financial assets held by others net of any related impairment of capitalized service costs. Also includes any premiums received in lieu of regular servicing fees on such loans only as earned over the life of the loans."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r128"
     ]
    },
    "nbbk_FinancialAssetAcquiredWithCreditDeteriorationLoanOneMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "FinancialAssetAcquiredWithCreditDeteriorationLoanOneMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial asset acquired with deteriorated credit quality, loan one.",
        "label": "Financial Asset Acquired with Credit Deterioration, Loan One [Member]",
        "verboseLabel": "PCD, 1"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_FinancialAssetAcquiredWithCreditDeteriorationLoanTwoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "FinancialAssetAcquiredWithCreditDeteriorationLoanTwoMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial asset acquired with deteriorated credit quality, loan two.",
        "label": "Financial Asset Acquired with Credit Deterioration, Loan Two [Member]",
        "terseLabel": "PCD, 2"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancialAssetAcquiredWithCreditDeteriorationMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Asset Acquired with Credit Deterioration [Member]",
        "terseLabel": "PCD",
        "documentation": "Financial asset acquired with deteriorated credit quality."
       }
      }
     },
     "auth_ref": [
      "r1186"
     ]
    },
    "us-gaap_FinancialAssetNotPastDueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancialAssetNotPastDueMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Asset, Not Past Due [Member]",
        "terseLabel": "Current Loans",
        "documentation": "Financial asset not past due."
       }
      }
     },
     "auth_ref": [
      "r292",
      "r899"
     ]
    },
    "us-gaap_FinancialInstrumentAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancialInstrumentAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesScheduleOfContractAmountsRepresentsOffBalanceSheetDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Instrument [Axis]",
        "documentation": "Information by type of financial instrument."
       }
      }
     },
     "auth_ref": [
      "r248",
      "r249",
      "r250",
      "r251",
      "r252",
      "r253",
      "r254",
      "r256",
      "r257",
      "r258",
      "r259",
      "r260",
      "r261",
      "r262",
      "r263",
      "r264",
      "r265",
      "r266",
      "r267",
      "r268",
      "r269",
      "r270",
      "r271",
      "r272",
      "r273",
      "r274",
      "r275",
      "r276",
      "r277",
      "r278",
      "r284",
      "r285",
      "r292",
      "r293",
      "r299",
      "r305",
      "r310",
      "r311",
      "r354",
      "r367",
      "r595",
      "r608",
      "r636",
      "r645",
      "r647",
      "r661",
      "r662",
      "r663",
      "r664",
      "r665",
      "r666",
      "r667",
      "r668",
      "r669",
      "r670",
      "r671",
      "r672",
      "r673",
      "r674",
      "r676",
      "r678",
      "r679",
      "r680",
      "r681",
      "r682",
      "r683",
      "r684",
      "r685",
      "r686",
      "r687",
      "r688",
      "r689",
      "r690",
      "r691",
      "r692",
      "r727",
      "r739",
      "r900",
      "r964",
      "r966",
      "r967",
      "r968",
      "r969",
      "r970",
      "r971",
      "r972",
      "r973",
      "r977",
      "r1090",
      "r1091",
      "r1092",
      "r1093",
      "r1094",
      "r1095",
      "r1096",
      "r1167",
      "r1168",
      "r1169",
      "r1170",
      "r1338",
      "r1341",
      "r1342",
      "r1343",
      "r1350",
      "r1353",
      "r1354",
      "r1356"
     ]
    },
    "us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]",
        "terseLabel": "Financial Assets"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]",
        "terseLabel": "Financial Liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FinancingReceivableAccruedInterestWriteoff": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableAccruedInterestWriteoff",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Accrued Interest, Writeoff",
        "terseLabel": "Accrued interest receivables written off",
        "documentation": "Amount of writeoff of accrued interest on financing receivable recognized by reversing interest income."
       }
      }
     },
     "auth_ref": [
      "r298"
     ]
    },
    "us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss",
       "weight": -1.0,
       "order": 1.0
      },
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest",
        "negatedLabel": "Allowance for credit losses",
        "periodEndLabel": "Ending balance",
        "periodStartLabel": "Beginning balance",
        "documentation": "Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r1173"
     ]
    },
    "us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableAllowanceForCreditLossesLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Allowance for Credit Loss [Line Items]",
        "terseLabel": "Loans Receivable and ACL",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r135",
      "r286",
      "r287",
      "r288",
      "r289",
      "r290",
      "r291"
     ]
    },
    "srt_FinancingReceivableBeforeAllowanceForCreditLossToTotalPercent": {
     "xbrltype": "percentItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "FinancingReceivableBeforeAllowanceForCreditLossToTotalPercent",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, before Allowance for Credit Loss, to Total, Percent",
        "terseLabel": "Total loans (in percentage)",
        "verboseLabel": "Percentage of loans modified",
        "documentation": "Percentage, before allowance for credit loss, of financing receivable to total financing receivable."
       }
      }
     },
     "auth_ref": [
      "r135"
     ]
    },
    "us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableCreditQualityIndicatorsTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable Credit Quality Indicators [Table Text Block]",
        "terseLabel": "Schedule of amortized cost of loans receivable by internal risk grade by year of origination",
        "documentation": "Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics."
       }
      }
     },
     "auth_ref": [
      "r1183"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterest90DaysOrMorePastDueStillAccruing": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterest90DaysOrMorePastDueStillAccruing",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing",
        "terseLabel": "Past Due 90 Days or More &amp; Still Accruing",
        "documentation": "Amortized cost excluding accrued interest, of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r295"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Assets",
       "weight": 1.0,
       "order": 9.0
      },
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss",
        "totalLabel": "Net loans",
        "documentation": "Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r1173"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Abstract]",
        "terseLabel": "PROVISION FOR CREDIT LOSSES"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery",
        "terseLabel": "Recoveries of loans previously charged off",
        "documentation": "Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r290"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRollForward": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRollForward",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]",
        "terseLabel": "Change in the ACL by major loan segment",
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff",
        "negatedLabel": "Charge offs",
        "totalLabel": "Total",
        "documentation": "Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r289",
      "r301"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]",
        "terseLabel": "Current period gross charge-offs"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossesIndividuallyEvaluatedForImpairmentThresholdAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossesIndividuallyEvaluatedForImpairmentThresholdAmount",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Threshold amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.",
        "label": "Financing Receivable, Excluding Accrued Interest Allowance for Credit Losses, Individually Evaluated for Impairment, Threshold Amount",
        "terseLabel": "Allowances for credit losses individual impairment threshold amount"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails",
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss",
        "verboseLabel": "Loans receivable, net of deferred fees",
        "documentation": "Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r297",
      "r300",
      "r1173"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]",
        "terseLabel": "Term Loans Amortized Cost Basis by Origination Year"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process",
        "terseLabel": "Total loans",
        "totalLabel": "Total",
        "verboseLabel": "Total loans, gross",
        "documentation": "Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r699"
     ]
    },
    "nbbk_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossPremiumDiscount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossPremiumDiscount",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amortized cost excluding accrued interest, before allowance for credit loss, Purchase Premium (Discount)  of financing receivable. Excludes net investment in lease.",
        "label": "Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Premium (Discount)",
        "terseLabel": "Gross Loan"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_FinancingReceivableExcludingAccruedInterestCollateralDependentLoanAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "FinancingReceivableExcludingAccruedInterestCollateralDependentLoanAmount",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amortized cost of collateral-dependent loans excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.",
        "label": "Financing Receivable, Excluding Accrued Interest, Collateral Dependent Loan, Amount",
        "terseLabel": "Amortized cost of collateral-dependent loans"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_ProvisionForLoanLossesExpensed",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal)",
        "terseLabel": "Provision for (release of) credit losses",
        "verboseLabel": "Provision for credit losses - loans",
        "documentation": "Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r179",
      "r287"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrual": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestNonaccrual",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Nonaccrual",
        "terseLabel": "Nonaccrual",
        "totalLabel": "Total Nonaccrual Loans",
        "documentation": "Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r294"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrual",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance",
        "terseLabel": "Nonaccrual Loans with No ACL",
        "documentation": "Amortized cost excluding accrued interest, of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r296"
     ]
    },
    "nbbk_FinancingReceivableExcludingAccruedInterestNonaccrualWithRelatedAllowance": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "FinancingReceivableExcludingAccruedInterestNonaccrualWithRelatedAllowance",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrual",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amortized cost excluding accrued interest, of financing receivable on nonaccrual status with allowance for credit loss recorded. Excludes net investment in lease.",
        "label": "Financing Receivable, Excluding Accrued Interest, Nonaccrual, With Related Allowance",
        "terseLabel": "Nonaccrual Loans with an ACL"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year",
        "terseLabel": "Prior",
        "documentation": "Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r297",
      "r301",
      "r898"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff",
        "terseLabel": "Prior",
        "documentation": "Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r301"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestRevolving": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestRevolving",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Revolving",
        "terseLabel": "Revolving Loans",
        "documentation": "Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn."
       }
      }
     },
     "auth_ref": [
      "r297",
      "r301",
      "r898"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestRevolvingWriteoff",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff",
        "terseLabel": "Revolving Loans",
        "documentation": "Amount, excluding accrued interest, of writeoff of financing receivable that can be withdrawn, repaid, and redrawn."
       }
      }
     },
     "auth_ref": [
      "r301"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year",
        "terseLabel": "Year 5",
        "documentation": "Amortized cost excluding accrued interest, of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r297",
      "r301",
      "r898"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff",
        "terseLabel": "Year 5",
        "documentation": "Amount, excluding accrued interest, of writeoff of financing receivable originated four years before current fiscal year. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r301"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year",
        "terseLabel": "Year 4",
        "documentation": "Amortized cost excluding accrued interest, of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r297",
      "r301",
      "r898"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff",
        "terseLabel": "Year 4",
        "documentation": "Amount, excluding accrued interest, of writeoff of financing receivable originated three years before current fiscal year. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r301"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year",
        "terseLabel": "Year 1",
        "documentation": "Amortized cost excluding accrued interest, of financing receivable originated in current fiscal year. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r297",
      "r301",
      "r898"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff",
        "terseLabel": "Year 1",
        "documentation": "Amount, excluding accrued interest, of writeoff of financing receivable originated in current fiscal year. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r301"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year",
        "terseLabel": "Year 3",
        "documentation": "Amortized cost excluding accrued interest, of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r297",
      "r301",
      "r898"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff",
        "terseLabel": "Year 3",
        "documentation": "Amount, excluding accrued interest, of writeoff of financing receivable originated two years before current fiscal year. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r301"
     ]
    },
    "us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year",
        "terseLabel": "Year 2",
        "documentation": "Amortized cost excluding accrued interest of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r297",
      "r301",
      "r898"
     ]
    },
    "us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableModificationsPostModificationRecordedInvestment2",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Modified in Period, Amount",
        "terseLabel": "Loans modified in period",
        "documentation": "Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty."
       }
      }
     },
     "auth_ref": [
      "r111",
      "r241",
      "r877"
     ]
    },
    "nbbk_FinancingReceivableNonAccrualLoansPercentageExcludedFromIndividuallyEvaluatedLoans": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "FinancingReceivableNonAccrualLoansPercentageExcludedFromIndividuallyEvaluatedLoans",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of non-accrual residential real estate loans that are well secured are not considered to warrant a downgrade to substandard risk rating and are therefore excluded from individually evaluated loans. loan to value excluded from individually evaluated loans.",
        "label": "Financing Receivable, Non-accrual Loans Percentage, Excluded from Individually Evaluated Loans",
        "terseLabel": "Loans to value percentage, excluded from individually evaluated loans"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FinancingReceivablePortfolioSegmentAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivablePortfolioSegmentAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable Portfolio Segment [Axis]",
        "documentation": "Information by the level at which an entity develops and documents a systematic methodology to determine its allowance for credit losses."
       }
      }
     },
     "auth_ref": [
      "r130",
      "r131",
      "r134",
      "r135",
      "r284",
      "r286",
      "r287",
      "r288",
      "r289",
      "r290",
      "r291",
      "r878",
      "r1090",
      "r1091",
      "r1092",
      "r1093",
      "r1094",
      "r1095",
      "r1096",
      "r1097",
      "r1098",
      "r1099"
     ]
    },
    "us-gaap_FinancingReceivablePortfolioSegmentDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivablePortfolioSegmentDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable Portfolio Segment [Domain]",
        "documentation": "Level at which an entity develops and documents a systematic methodology to determine its allowance for credit losses."
       }
      }
     },
     "auth_ref": [
      "r130",
      "r131",
      "r134",
      "r135",
      "r286",
      "r287",
      "r288",
      "r289",
      "r290",
      "r291",
      "r1090",
      "r1091",
      "r1092",
      "r1093",
      "r1094",
      "r1095",
      "r1096",
      "r1097",
      "r1098",
      "r1099"
     ]
    },
    "us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Class of Financing Receivable [Axis]",
        "documentation": "Information by class of financing receivable determined on the basis of initial measurement attribute, risk characteristics and method of monitoring and assessing credit risk."
       }
      }
     },
     "auth_ref": [
      "r109",
      "r112",
      "r114",
      "r115",
      "r130",
      "r131",
      "r134",
      "r135",
      "r239",
      "r241",
      "r242",
      "r243",
      "r244",
      "r292",
      "r293",
      "r299",
      "r877",
      "r882",
      "r883",
      "r884",
      "r885",
      "r898",
      "r899",
      "r1090",
      "r1091",
      "r1092",
      "r1093",
      "r1094",
      "r1095",
      "r1096",
      "r1097",
      "r1098",
      "r1099",
      "r1152"
     ]
    },
    "us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Class of Financing Receivable [Domain]",
        "documentation": "Financing receivables determined on the basis of initial measurement attribute, risk characteristics and method of monitoring and assessing credit risk."
       }
      }
     },
     "auth_ref": [
      "r115",
      "r130",
      "r131",
      "r134",
      "r135",
      "r239",
      "r241",
      "r242",
      "r243",
      "r244",
      "r877",
      "r882",
      "r883",
      "r884",
      "r885",
      "r1090",
      "r1091",
      "r1092",
      "r1093",
      "r1094",
      "r1095",
      "r1096",
      "r1097",
      "r1098",
      "r1099",
      "r1152"
     ]
    },
    "us-gaap_FinancingReceivableRecordedInvestmentLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableRecordedInvestmentLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Credit Quality Indicator [Line Items]",
        "terseLabel": "Loans Receivable and ACL",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r109",
      "r879",
      "r880",
      "r881",
      "r882",
      "r883",
      "r884",
      "r885",
      "r886",
      "r887",
      "r888",
      "r889",
      "r890",
      "r891",
      "r892",
      "r893",
      "r894",
      "r895",
      "r896",
      "r897",
      "r898",
      "r1184",
      "r1186"
     ]
    },
    "us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableRecordedInvestmentNonaccrualStatus",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Nonaccrual",
        "terseLabel": "Loans on Nonaccrual",
        "verboseLabel": "Incurred Loss Model - Nonaccrual Loans",
        "documentation": "Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease."
       }
      }
     },
     "auth_ref": [
      "r113",
      "r132",
      "r133",
      "r294"
     ]
    },
    "us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableRecordedInvestmentPastDueLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Past Due [Line Items]",
        "terseLabel": "Loans Receivable and ACL",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r879",
      "r880",
      "r881",
      "r882",
      "r883",
      "r884",
      "r885",
      "r886",
      "r887",
      "r888",
      "r889",
      "r890",
      "r891",
      "r892",
      "r893",
      "r899",
      "r1182"
     ]
    },
    "us-gaap_FinancingReceivableUnamortizedLoanFeeCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableUnamortizedLoanFeeCost",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails": {
       "parentTag": "us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Unamortized Loan Cost (Fee)",
        "verboseLabel": "Deferred fees, net",
        "documentation": "Amount of unamortized loan commitment, origination, and other costs (fees) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement."
       }
      }
     },
     "auth_ref": [
      "r240",
      "r1085",
      "r1153"
     ]
    },
    "us-gaap_FinancingReceivableUnamortizedPurchasePremiumDiscount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivableUnamortizedPurchasePremiumDiscount",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Unamortized Purchase Premium (Discount)",
        "terseLabel": "Premium (Discount)",
        "documentation": "Amount of unamortized purchase premium (discount) on financing receivable. Excludes financing receivable covered under loss sharing agreement."
       }
      }
     },
     "auth_ref": [
      "r1150",
      "r1153"
     ]
    },
    "us-gaap_FinancingReceivables30To59DaysPastDueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivables30To59DaysPastDueMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Asset, 30 to 59 Days Past Due [Member]",
        "terseLabel": "30-59 Days Past Due",
        "documentation": "Financial asset more than 29 days past due but fewer than 60 days past due."
       }
      }
     },
     "auth_ref": [
      "r899"
     ]
    },
    "us-gaap_FinancingReceivables60To89DaysPastDueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivables60To89DaysPastDueMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Asset, 60 to 89 Days Past Due [Member]",
        "terseLabel": "60-89 Days Past Due",
        "documentation": "Financial asset more than 59 days past due but fewer than 90 days past due."
       }
      }
     },
     "auth_ref": [
      "r899"
     ]
    },
    "us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivablesEqualToGreaterThan90DaysPastDueMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Asset, Equal to or Greater than 90 Days Past Due [Member]",
        "terseLabel": "90 Days or More",
        "documentation": "Financial asset equal to or greater than 90 days past due."
       }
      }
     },
     "auth_ref": [
      "r899"
     ]
    },
    "us-gaap_FinancingReceivablesPeriodPastDueAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivablesPeriodPastDueAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Asset, Aging [Axis]",
        "documentation": "Information by period in which financial asset is past due or not past due."
       }
      }
     },
     "auth_ref": [
      "r114",
      "r292",
      "r899"
     ]
    },
    "us-gaap_FinancingReceivablesPeriodPastDueDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FinancingReceivablesPeriodPastDueDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Asset, Aging [Domain]",
        "documentation": "Period in which financial asset is past due or not past due. For past due, element name and standard label in Financial Asset, [numeric lower end] to [numeric higher end] [date measure] Past Due [Member] or Financial Asset, Greater than [low end numeric value] [date measure] Past Due [Member] or Financial Asset, Less than [high end numeric value] [date measure] Past Due [Member] formats."
       }
      }
     },
     "auth_ref": [
      "r114",
      "r292",
      "r899"
     ]
    },
    "nbbk_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails": {
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Finite-Lived Intangible Asset, Expected Amortization, after Year Four",
        "terseLabel": "2031 and thereafter"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FiniteLivedIntangibleAssetUsefulLife": {
     "xbrltype": "durationItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetUsefulLife",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Asset, Useful Life",
        "terseLabel": "Estimated useful live",
        "documentation": "Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsAccumulatedAmortization",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails": {
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Assets, Accumulated Amortization",
        "terseLabel": "Accumulated Amortization",
        "documentation": "Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life."
       }
      }
     },
     "auth_ref": [
      "r156",
      "r312",
      "r326",
      "r854"
     ]
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails": {
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year One",
        "terseLabel": "2027",
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach)."
       }
      }
     },
     "auth_ref": [
      "r328",
      "r852",
      "r854"
     ]
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails": {
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year",
        "terseLabel": "2026",
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in remainder of current fiscal year."
       }
      }
     },
     "auth_ref": [
      "r1399"
     ]
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearFour",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails": {
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Four",
        "terseLabel": "2030",
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach)."
       }
      }
     },
     "auth_ref": [
      "r328",
      "r852",
      "r854"
     ]
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearThree",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails": {
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Three",
        "terseLabel": "2029",
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach)."
       }
      }
     },
     "auth_ref": [
      "r328",
      "r852",
      "r854"
     ]
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails": {
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Two",
        "terseLabel": "2028",
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach)."
       }
      }
     },
     "auth_ref": [
      "r328",
      "r852",
      "r854"
     ]
    },
    "us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsByMajorClassAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails",
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Assets by Major Class [Axis]",
        "documentation": "Information by major type or class of finite-lived intangible assets."
       }
      }
     },
     "auth_ref": [
      "r319",
      "r321",
      "r322",
      "r323",
      "r325",
      "r326",
      "r329",
      "r330",
      "r695",
      "r696",
      "r753",
      "r852",
      "r854",
      "r926",
      "r927",
      "r928",
      "r929",
      "r930",
      "r931",
      "r932",
      "r933",
      "r934",
      "r935",
      "r936",
      "r937",
      "r938",
      "r939",
      "r940",
      "r941",
      "r942",
      "r943",
      "r944",
      "r945",
      "r946",
      "r947",
      "r948",
      "r949",
      "r950",
      "r951",
      "r952"
     ]
    },
    "us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]",
        "terseLabel": "Estimated amortization expense"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FiniteLivedIntangibleAssetsGross": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsGross",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails": {
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Assets, Gross",
        "terseLabel": "Gross Carrying Amount",
        "documentation": "Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life."
       }
      }
     },
     "auth_ref": [
      "r312",
      "r326",
      "r696",
      "r854"
     ]
    },
    "us-gaap_FiniteLivedIntangibleAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Assets [Line Items]",
        "terseLabel": "Goodwill and Other Intangible Assets",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r319",
      "r326",
      "r329",
      "r330",
      "r331",
      "r695",
      "r852",
      "r854",
      "r926",
      "r927",
      "r928",
      "r929",
      "r930",
      "r931",
      "r932",
      "r933",
      "r934",
      "r935",
      "r936",
      "r937",
      "r938",
      "r939",
      "r940",
      "r941",
      "r942",
      "r943",
      "r944",
      "r945",
      "r946",
      "r947",
      "r948",
      "r949",
      "r950",
      "r951",
      "r952"
     ]
    },
    "us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsMajorClassNameDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails",
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Assets, Major Class Name [Domain]",
        "documentation": "The major class of finite-lived intangible asset (for example, patents, trademarks, copyrights, etc.) A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company."
       }
      }
     },
     "auth_ref": [
      "r319",
      "r321",
      "r322",
      "r323",
      "r325",
      "r326",
      "r329",
      "r330",
      "r753",
      "r852",
      "r854",
      "r926",
      "r927",
      "r928",
      "r929",
      "r930",
      "r931",
      "r932",
      "r933",
      "r934",
      "r935",
      "r936",
      "r937",
      "r938",
      "r939",
      "r940",
      "r941",
      "r942",
      "r943",
      "r944",
      "r945",
      "r946",
      "r947",
      "r948",
      "r949",
      "r950",
      "r951",
      "r952"
     ]
    },
    "us-gaap_FiniteLivedIntangibleAssetsNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsNet",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails": {
       "parentTag": "us-gaap_IntangibleAssetsNetIncludingGoodwill",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Assets",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails",
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseDetails",
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails",
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Assets, Net",
        "terseLabel": "Core deposit intangible, net",
        "totalLabel": "Intangible assets, net",
        "documentation": "Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life."
       }
      }
     },
     "auth_ref": [
      "r695",
      "r1209"
     ]
    },
    "us-gaap_FiniteLivedIntangibleAssetsNetAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsNetAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Assets, Net [Abstract]",
        "terseLabel": "Balances subject to amortization:"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1": {
     "xbrltype": "durationItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Assets, Remaining Amortization Period",
        "terseLabel": "Period of amortization for core deposit intangibles recognized",
        "documentation": "Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days."
       }
      }
     },
     "auth_ref": [
      "r695"
     ]
    },
    "ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery due to Disqualification of Tax Benefits, Amount",
        "terseLabel": "Forgone Recovery due to Disqualification of Tax Benefits, Amount"
       }
      }
     },
     "auth_ref": [
      "r1010",
      "r1020",
      "r1030",
      "r1062"
     ]
    },
    "ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ForgoneRecoveryDueToExpenseOfEnforcementAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery due to Expense of Enforcement, Amount",
        "terseLabel": "Forgone Recovery due to Expense of Enforcement, Amount"
       }
      }
     },
     "auth_ref": [
      "r1010",
      "r1020",
      "r1030",
      "r1062"
     ]
    },
    "ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ForgoneRecoveryDueToViolationOfHomeCountryLawAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery due to Violation of Home Country Law, Amount",
        "terseLabel": "Forgone Recovery due to Violation of Home Country Law, Amount"
       }
      }
     },
     "auth_ref": [
      "r1010",
      "r1020",
      "r1030",
      "r1062"
     ]
    },
    "ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ForgoneRecoveryExplanationOfImpracticabilityTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery, Explanation of Impracticability [Text Block]",
        "terseLabel": "Forgone Recovery, Explanation of Impracticability"
       }
      }
     },
     "auth_ref": [
      "r1010",
      "r1020",
      "r1030",
      "r1062"
     ]
    },
    "ecd_ForgoneRecoveryIndName": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ForgoneRecoveryIndName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery, Individual Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r1010",
      "r1020",
      "r1030",
      "r1062"
     ]
    },
    "nbbk_ForwardStartingInterestRateSwapMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "ForwardStartingInterestRateSwapMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to forward starting interest rate swaps.",
        "label": "Forward Starting Interest Rate Swap [Member]",
        "terseLabel": "Forward-starting interest rate swap"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_FrValAsOfPrrYrEndOfEqtyAwrdsGrntdInPrrYrsFldVstngCondsDrngCvrdYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "FrValAsOfPrrYrEndOfEqtyAwrdsGrntdInPrrYrsFldVstngCondsDrngCvrdYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member]",
        "terseLabel": "Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year"
       }
      }
     },
     "auth_ref": [
      "r1043"
     ]
    },
    "us-gaap_GainLossFromComponentsExcludedFromAssessmentOfCashFlowHedgeEffectivenessNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "GainLossFromComponentsExcludedFromAssessmentOfCashFlowHedgeEffectivenessNet",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unrealized Gain (Loss) on Cash Flow Hedging Instruments",
        "terseLabel": "Unrealized holding losses on cash flow hedge",
        "documentation": "The net gain (loss) relating to components of the gain (loss) on the cash flow hedging instrument excluded from the assessment of cash flow hedge effectiveness. Recognized in earnings."
       }
      }
     },
     "auth_ref": [
      "r178",
      "r549",
      "r560",
      "r960"
     ]
    },
    "us-gaap_GainLossOnSaleOfDerivatives": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "GainLossOnSaleOfDerivatives",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestIncome",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain (Loss) on Sale of Derivatives",
        "terseLabel": "Swap contract income",
        "documentation": "The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings."
       }
      }
     },
     "auth_ref": [
      "r10",
      "r90",
      "r808",
      "r809",
      "r810",
      "r811"
     ]
    },
    "nbbk_GainLossOnSalesOfLoansIncludingMortgageServicingRights": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "GainLossOnSalesOfLoansIncludingMortgageServicingRights",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The net gain (loss) resulting from a sale of loans, including Mortgage Servicing Rights.",
        "label": "Gain (Loss) on Sales of Loans, Including Mortgage Servicing Rights",
        "negatedLabel": "Gain on sale of loans"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_GainLossOnSalesOfLoansNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "GainLossOnSalesOfLoansNet",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestIncome",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain (Loss) on Sales of Loans, Net",
        "terseLabel": "(Loss) gain on sale of loans, net",
        "documentation": "The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes."
       }
      }
     },
     "auth_ref": [
      "r10",
      "r90"
     ]
    },
    "us-gaap_GeneralAndAdministrativeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "GeneralAndAdministrativeExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestExpense",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "General and Administrative Expense",
        "terseLabel": "General and administrative expenses",
        "documentation": "The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line."
       }
      }
     },
     "auth_ref": [
      "r62",
      "r805"
     ]
    },
    "us-gaap_Goodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "Goodwill",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails": {
       "parentTag": "us-gaap_IntangibleAssetsNetIncludingGoodwill",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Assets",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails",
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails",
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInCarryingValueOfGoodwillDetails",
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill",
        "periodEndLabel": "Ending balance",
        "periodStartLabel": "Beginning balance",
        "terseLabel": "Goodwill",
        "documentation": "Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized."
       }
      }
     },
     "auth_ref": [
      "r155",
      "r313",
      "r698",
      "r875",
      "r901",
      "r920",
      "r921",
      "r922",
      "r955",
      "r965",
      "r975",
      "r1192",
      "r1199",
      "r1322"
     ]
    },
    "us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "GoodwillAndIntangibleAssetsDisclosureAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill and Other Intangible Assets"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "GoodwillAndIntangibleAssetsDisclosureTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill and Intangible Assets Disclosure [Text Block]",
        "terseLabel": "Goodwill and Other Intangible Assets",
        "documentation": "The entire disclosure for goodwill and intangible assets."
       }
      }
     },
     "auth_ref": [
      "r1190",
      "r1202"
     ]
    },
    "us-gaap_GoodwillImpairedAccumulatedImpairmentLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "GoodwillImpairedAccumulatedImpairmentLossAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill, Impaired, Accumulated Impairment Loss [Abstract]",
        "terseLabel": "Balances not subject to amortization:"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_GoodwillImpairmentLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "GoodwillImpairmentLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill, Impairment Loss",
        "terseLabel": "Impairment of goodwill",
        "documentation": "Amount of impairment loss from asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized."
       }
      }
     },
     "auth_ref": [
      "r10",
      "r314",
      "r315",
      "r316",
      "r318",
      "r526",
      "r901",
      "r965"
     ]
    },
    "us-gaap_GoodwillPeriodIncreaseDecrease": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "GoodwillPeriodIncreaseDecrease",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill, Period Increase (Decrease)",
        "terseLabel": "Adjustments to goodwill",
        "documentation": "Amount of increase (decrease) of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized."
       }
      }
     },
     "auth_ref": [
      "r1191",
      "r1322"
     ]
    },
    "us-gaap_GoodwillRollForward": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "GoodwillRollForward",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInCarryingValueOfGoodwillDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill [Roll Forward]",
        "terseLabel": "Changes in the carrying value of goodwill",
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_HedgingDesignationAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "HedgingDesignationAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesNumberOfPositionsAndTotalNotionalAmountOfNonDesignatedHedgesAndRpasDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedging Designation [Axis]",
        "terseLabel": "Hedging Designation [Axis]",
        "documentation": "Information by designation of purpose of derivative instrument."
       }
      }
     },
     "auth_ref": [
      "r1326",
      "r1329"
     ]
    },
    "us-gaap_HedgingDesignationDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "HedgingDesignationDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesNumberOfPositionsAndTotalNotionalAmountOfNonDesignatedHedgesAndRpasDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedging Designation [Domain]",
        "terseLabel": "Hedging Designation [Domain]",
        "documentation": "Designation of purpose of derivative instrument."
       }
      }
     },
     "auth_ref": [
      "r1326",
      "r1329"
     ]
    },
    "us-gaap_HedgingRelationshipDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "HedgingRelationshipDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedging Relationship [Domain]",
        "documentation": "Nature or intent of a hedge."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_HomeEquityLoanMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "HomeEquityLoanMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Home Equity Loan [Member]",
        "terseLabel": "Home equity",
        "verboseLabel": "Home Equity",
        "documentation": "Loan based on the equity of the borrower's residential property in which the borrower receives the loan amount upfront. Excludes home equity lines of credit."
       }
      }
     },
     "auth_ref": [
      "r1149"
     ]
    },
    "nbbk_HomeImprovementLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "HomeImprovementLoansMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information relating to Home improvement loans.",
        "label": "Home Improvement Loans [Member]",
        "terseLabel": "Home improvement loans"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_IncentivePlanVestingPeriod": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "IncentivePlanVestingPeriod",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Incentive plan vesting period",
        "label": "Incentive plan vesting period",
        "terseLabel": "Incentive plan vesting period"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest",
        "totalLabel": "INCOME BEFORE TAXES",
        "documentation": "Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest."
       }
      }
     },
     "auth_ref": [
      "r59",
      "r93",
      "r105",
      "r707",
      "r709",
      "r735",
      "r862",
      "r864",
      "r866",
      "r872",
      "r874",
      "r1142",
      "r1144",
      "r1145",
      "r1146",
      "r1147"
     ]
    },
    "us-gaap_IncomeStatementAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncomeStatementAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidated Statements of Income"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_IncomeTaxAuthorityAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncomeTaxAuthorityAxis",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Jurisdiction [Axis]",
        "documentation": "Information by income tax jurisdiction."
       }
      }
     },
     "auth_ref": [
      "r188",
      "r457",
      "r458",
      "r459",
      "r461",
      "r919",
      "r1317"
     ]
    },
    "us-gaap_IncomeTaxAuthorityDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncomeTaxAuthorityDomain",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Jurisdiction [Domain]",
        "documentation": "Income tax jurisdiction."
       }
      }
     },
     "auth_ref": [
      "r188",
      "r457",
      "r458",
      "r459",
      "r461",
      "r919",
      "r1317"
     ]
    },
    "us-gaap_IncomeTaxExpenseBenefit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncomeTaxExpenseBenefit",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Expense (Benefit)",
        "terseLabel": "INCOME TAX EXPENSE",
        "documentation": "Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations."
       }
      }
     },
     "auth_ref": [
      "r121",
      "r126",
      "r192",
      "r213",
      "r214",
      "r227",
      "r235",
      "r237",
      "r456",
      "r457",
      "r464",
      "r743",
      "r862",
      "r864",
      "r866",
      "r919"
     ]
    },
    "us-gaap_IncomeTaxesPaidNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncomeTaxesPaidNet",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Taxes Paid, Net",
        "terseLabel": "Income taxes",
        "documentation": "Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax."
       }
      }
     },
     "auth_ref": [
      "r26",
      "r188",
      "r460",
      "r461"
     ]
    },
    "us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncreaseDecreaseInAccruedInterestReceivableNet",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0,
       "order": 17.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) in Accrued Interest Receivable, Net",
        "negatedLabel": "Accrued interest receivable",
        "documentation": "The increase (decrease) during the reporting period in the amount due from borrowers for interest payments."
       }
      }
     },
     "auth_ref": [
      "r9"
     ]
    },
    "us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0,
       "order": 19.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities",
        "terseLabel": "Accrued expenses and other liabilities",
        "documentation": "Amount of increase (decrease) in accrued expenses, and obligations classified as other."
       }
      }
     },
     "auth_ref": [
      "r1128"
     ]
    },
    "nbbk_IncreaseDecreaseInAccruedRetirementLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "IncreaseDecreaseInAccruedRetirementLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0,
       "order": 20.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the amount of expenses incurred for retirement liability but not yet paid.",
        "label": "Increase (Decrease) in Accrued Retirement Liabilities",
        "terseLabel": "Accrued retirement liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) in Advance Payments by Borrowers for Taxes and Insurance",
        "terseLabel": "Net change in mortgagors' escrow accounts",
        "documentation": "Amount of increase (decrease) in prepayments received from borrowers for taxes and insurance remitted to the appropriate tax authority or insurer on behalf of the borrower."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_IncreaseDecreaseInDeposits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncreaseDecreaseInDeposits",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) in Deposits",
        "terseLabel": "Net change in deposits",
        "documentation": "The net cash inflow or outflow for the increase (decrease) in the beginning and end of period deposits balances."
       }
      }
     },
     "auth_ref": [
      "r25",
      "r102"
     ]
    },
    "us-gaap_IncreaseDecreaseInLoansHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncreaseDecreaseInLoansHeldForSale",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) in Loan, Held-for-Sale",
        "negatedLabel": "Net change in loans held for sale",
        "documentation": "Amount of increase (decrease) in value of loan held with intention to sell or be securitized in near future."
       }
      }
     },
     "auth_ref": [
      "r122",
      "r1128"
     ]
    },
    "us-gaap_IncreaseDecreaseInOperatingCapitalAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncreaseDecreaseInOperatingCapitalAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) in Operating Capital [Abstract]",
        "terseLabel": "Changes in operating assets and liabilities:"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0,
       "order": 18.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) in Prepaid Expense and Other Assets",
        "negatedLabel": "Prepaid expenses and other assets",
        "documentation": "Amount of increase (decrease) in prepaid expenses, and assets classified as other."
       }
      }
     },
     "auth_ref": [
      "r9"
     ]
    },
    "us-gaap_IncreaseDecreaseInStockholdersEquityRollForward": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IncreaseDecreaseInStockholdersEquityRollForward",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) in Stockholders' Equity [Roll Forward]",
        "terseLabel": "Consolidated Statement of Changes in Shareholders' Equity",
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_IndividualAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "IndividualAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure",
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure",
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements",
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Individual [Axis]",
        "terseLabel": "Individual:"
       }
      }
     },
     "auth_ref": [
      "r1010",
      "r1020",
      "r1030",
      "r1054",
      "r1062",
      "r1066",
      "r1074"
     ]
    },
    "us-gaap_InformationTechnologyAndDataProcessing": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InformationTechnologyAndDataProcessing",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestExpense",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Information Technology and Data Processing",
        "terseLabel": "Data processing expenses",
        "documentation": "The amount of expenses incurred in the period for information technology and data processing products and services."
       }
      }
     },
     "auth_ref": [
      "r63",
      "r864"
     ]
    },
    "ecd_InsiderTradingArrLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "InsiderTradingArrLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Insider Trading Arrangements [Line Items]",
        "terseLabel": "Insider Trading Arrangements:"
       }
      }
     },
     "auth_ref": [
      "r1072"
     ]
    },
    "ecd_InsiderTradingPoliciesProcLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "InsiderTradingPoliciesProcLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Insider Trading Policies and Procedures [Line Items]",
        "terseLabel": "Insider Trading Policies and Procedures:"
       }
      }
     },
     "auth_ref": [
      "r1002",
      "r1078"
     ]
    },
    "ecd_InsiderTrdPoliciesProcAdoptedFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "InsiderTrdPoliciesProcAdoptedFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insider Trading Policies and Procedures Adopted [Flag]",
        "terseLabel": "Insider Trading Policies and Procedures Adopted"
       }
      }
     },
     "auth_ref": [
      "r1002",
      "r1078"
     ]
    },
    "ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "InsiderTrdPoliciesProcNotAdoptedTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insider Trading Policies and Procedures Not Adopted [Text Block]",
        "terseLabel": "Insider Trading Policies and Procedures Not Adopted"
       }
      }
     },
     "auth_ref": [
      "r1002",
      "r1078"
     ]
    },
    "us-gaap_IntangibleAssetsNetIncludingGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "IntangibleAssetsNetIncludingGoodwill",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Intangible Assets, Net (Including Goodwill)",
        "totalLabel": "Total goodwill and other intangibles",
        "documentation": "Amount, after impairment and amortization, of goodwill, indefinite-lived, and finite-lived intangible assets."
       }
      }
     },
     "auth_ref": [
      "r1189"
     ]
    },
    "nbbk_InterestAndDividendIncomeOnCashEquivalentsAndOther": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "InterestAndDividendIncomeOnCashEquivalentsAndOther",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_InterestAndDividendIncomeOperating",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of dividend and interest income on cash equivalents and other.",
        "label": "Interest and Dividend Income on Cash Equivalents and Other",
        "terseLabel": "Interest and dividends on cash equivalents and other"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_InterestAndDividendIncomeOperating": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestAndDividendIncomeOperating",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_InterestIncomeExpenseNet",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest and Dividend Income, Operating",
        "totalLabel": "Total interest and dividend income",
        "documentation": "Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein."
       }
      }
     },
     "auth_ref": [
      "r85",
      "r94",
      "r96",
      "r97",
      "r98",
      "r864",
      "r1393"
     ]
    },
    "us-gaap_InterestAndDividendIncomeOperatingAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestAndDividendIncomeOperatingAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest and Dividend Income, Operating [Abstract]",
        "terseLabel": "INTEREST AND DIVIDEND INCOME"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_InterestAndFeeIncomeLoansAndLeases": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestAndFeeIncomeLoansAndLeases",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_InterestAndDividendIncomeOperating",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest and Fee Income, Loans and Leases",
        "terseLabel": "Interest and fees on loans",
        "documentation": "The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases."
       }
      }
     },
     "auth_ref": [
      "r85",
      "r864"
     ]
    },
    "us-gaap_InterestBearingDomesticDepositBrokered": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestBearingDomesticDepositBrokered",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Deposits",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest-Bearing Domestic Deposit, Brokered",
        "verboseLabel": "Brokered deposits",
        "documentation": "Amount of interest-bearing domestic third-party deposits placed by or through the assistance of a deposit broker, also known as brokered deposit liabilities."
       }
      }
     },
     "auth_ref": [
      "r78"
     ]
    },
    "us-gaap_InterestExpenseBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestExpenseBorrowings",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_InterestExpenseOperating",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Expense, Borrowings",
        "terseLabel": "Interest on borrowings",
        "documentation": "Aggregate amount of interest expense on all borrowings."
       }
      }
     },
     "auth_ref": [
      "r100",
      "r101",
      "r864",
      "r1389"
     ]
    },
    "us-gaap_InterestExpenseDeposits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestExpenseDeposits",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_InterestExpenseOperating",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Expense, Deposits",
        "terseLabel": "Interest on deposits",
        "documentation": "Aggregate amount of interest expense on all deposits."
       }
      }
     },
     "auth_ref": [
      "r99",
      "r864"
     ]
    },
    "us-gaap_InterestExpenseOperating": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestExpenseOperating",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_InterestIncomeExpenseNet",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Expense",
        "totalLabel": "Total interest expense",
        "documentation": "Amount of interest expense classified as operating."
       }
      }
     },
     "auth_ref": [
      "r234",
      "r706",
      "r864",
      "r1121"
     ]
    },
    "us-gaap_InterestExpenseOperatingAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestExpenseOperatingAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Expense [Abstract]",
        "terseLabel": "INTEREST EXPENSE"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_InterestIncomeDebtSecuritiesOperating": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestIncomeDebtSecuritiesOperating",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_InterestAndDividendIncomeOperating",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Income, Debt Securities, Operating",
        "terseLabel": "Interest on securities",
        "documentation": "Amount of interest income, amortization of premium and accretion of discount, on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in net income (trading); classified as operating."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestIncomeExpenseAfterProvisionForLoanLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Income (Expense), after Provision for Loan Loss",
        "totalLabel": "NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES",
        "documentation": "Amount of interest income or expense, including any amortization and accretion (as applicable) of discounts and premiums, including consideration of the provisions for loan, lease, credit, and other related losses."
       }
      }
     },
     "auth_ref": [
      "r87",
      "r864"
     ]
    },
    "us-gaap_InterestIncomeExpenseNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestIncomeExpenseNet",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Income (Expense), Net",
        "totalLabel": "NET INTEREST INCOME",
        "documentation": "Amount of interest income (expense) classified as operating."
       }
      }
     },
     "auth_ref": [
      "r700",
      "r864",
      "r1144"
     ]
    },
    "us-gaap_InterestPaidNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestPaidNet",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Paid, Excluding Capitalized Interest, Operating Activities",
        "terseLabel": "Interest",
        "documentation": "Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount."
       }
      }
     },
     "auth_ref": [
      "r183",
      "r186",
      "r187"
     ]
    },
    "us-gaap_InterestRateSwapMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestRateSwapMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesNumberOfPositionsAndTotalNotionalAmountOfNonDesignatedHedgesAndRpasDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Rate Swap [Member]",
        "terseLabel": "Interest rate products",
        "documentation": "Forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period."
       }
      }
     },
     "auth_ref": [
      "r959",
      "r988",
      "r989",
      "r1330"
     ]
    },
    "us-gaap_InterestReceivable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InterestReceivable",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Assets",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Receivable",
        "terseLabel": "Accrued interest receivable",
        "documentation": "Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable."
       }
      }
     },
     "auth_ref": [
      "r1107",
      "r1392"
     ]
    },
    "us-gaap_InternalCreditAssessmentAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InternalCreditAssessmentAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Internal Credit Assessment [Axis]",
        "documentation": "Information by entity-defined rating."
       }
      }
     },
     "auth_ref": [
      "r108",
      "r109",
      "r110",
      "r896",
      "r898",
      "r1184"
     ]
    },
    "us-gaap_InternalCreditAssessmentDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InternalCreditAssessmentDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Internal Credit Assessment [Domain]",
        "documentation": "Entity defined credit risk rating."
       }
      }
     },
     "auth_ref": [
      "r896",
      "r1184"
     ]
    },
    "us-gaap_InternalInvestmentGradeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InternalInvestmentGradeMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Internal Investment Grade [Member]",
        "terseLabel": "Not Formally Risk Related",
        "documentation": "Credit rating classification developed by the entity in which the probability of default is low and full and timely repayments are expected."
       }
      }
     },
     "auth_ref": [
      "r1184",
      "r1185"
     ]
    },
    "us-gaap_InvestmentBankingRevenue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InvestmentBankingRevenue",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestIncome",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Banking Revenue",
        "terseLabel": "Customer service fees",
        "documentation": "Includes (1) underwriting revenue (the spread between the resale price received and the cost of the securities and related expenses) generated through the purchasing, distributing and reselling of new issues of securities (alternatively, could be a secondary offering of a large block of previously issued securities); and (2) fees earned for mergers, acquisitions, divestitures, restructurings, and other types of financial advisory services."
       }
      }
     },
     "auth_ref": [
      "r88",
      "r89"
     ]
    },
    "us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InvestmentsClassifiedByContractualMaturityDateTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments Classified by Contractual Maturity Date [Table Text Block]",
        "terseLabel": "Schedule of maturities of securities available for sale",
        "documentation": "Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InvestmentsDebtAndEquitySecuritiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Securities"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_InvestmentsFairValueDisclosure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InvestmentsFairValueDisclosure",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments, Fair Value Disclosure",
        "terseLabel": "Non-public investments",
        "documentation": "Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method."
       }
      }
     },
     "auth_ref": [
      "r1339",
      "r1340",
      "r1350",
      "r1354",
      "r1356",
      "r1357",
      "r1359"
     ]
    },
    "us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecurities"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]",
        "terseLabel": "Securities",
        "documentation": "The entire disclosure for investments in certain debt and equity securities."
       }
      }
     },
     "auth_ref": [
      "r103",
      "r129",
      "r245",
      "r247",
      "r637",
      "r638",
      "r1372"
     ]
    },
    "us-gaap_LaborAndRelatedExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LaborAndRelatedExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestExpense",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Labor and Related Expense",
        "terseLabel": "Salaries and employee benefits",
        "documentation": "Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit."
       }
      }
     },
     "auth_ref": [
      "r702",
      "r864",
      "r1122"
     ]
    },
    "us-gaap_LeverageRatiosAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LeverageRatiosAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Leverage Ratio [Abstract]",
        "terseLabel": "Tier I Capital (to Total Average Assets)"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_Liabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "Liabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities",
        "totalLabel": "Total liabilities",
        "documentation": "Amount of liability recognized for present obligation requiring transfer or otherwise providing economic benefit to others."
       }
      }
     },
     "auth_ref": [
      "r16",
      "r38",
      "r39",
      "r40",
      "r42",
      "r43",
      "r44",
      "r45",
      "r192",
      "r195",
      "r196",
      "r280",
      "r343",
      "r344",
      "r345",
      "r346",
      "r347",
      "r348",
      "r349",
      "r350",
      "r351",
      "r531",
      "r535",
      "r536",
      "r646",
      "r783",
      "r871",
      "r905",
      "r993",
      "r1220",
      "r1363",
      "r1364"
     ]
    },
    "us-gaap_LiabilitiesAndStockholdersEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LiabilitiesAndStockholdersEquity",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities and Equity",
        "totalLabel": "Total liabilities and shareholders' equity",
        "documentation": "Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any."
       }
      }
     },
     "auth_ref": [
      "r53",
      "r83",
      "r733",
      "r975",
      "r979",
      "r980",
      "r1131",
      "r1134",
      "r1171",
      "r1360"
     ]
    },
    "us-gaap_LiabilitiesAndStockholdersEquityAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LiabilitiesAndStockholdersEquityAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities and Equity [Abstract]",
        "terseLabel": "Liabilities and shareholders' equity"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_LiabilitiesFairValueDisclosure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LiabilitiesFairValueDisclosure",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities, Fair Value Disclosure",
        "terseLabel": "Liabilities",
        "documentation": "Fair value of financial and nonfinancial obligations."
       }
      }
     },
     "auth_ref": [
      "r614",
      "r1339"
     ]
    },
    "us-gaap_LiabilitiesFairValueDisclosureAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LiabilitiesFairValueDisclosureAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities, Fair Value Disclosure [Abstract]",
        "terseLabel": "Liabilities:"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_LiabilityDefinedContributionPlan": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "LiabilityDefinedContributionPlan",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of liability, recognized in statement of financial position, for defined contribution plan.",
        "label": "Liability, Defined Contribution Plan",
        "terseLabel": "Obligation under the plan"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_LifeInsuranceCorporateOrBankOwnedChangeInValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LifeInsuranceCorporateOrBankOwnedChangeInValue",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0,
       "order": 13.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Life Insurance, Corporate or Bank Owned, Change in Value",
        "negatedLabel": "Increase in cash surrender values of BOLI",
        "documentation": "The change in cash surrender or contract value during the period which adjusted the amount of premiums paid in determining the expense or income recognized under the contract for the period."
       }
      }
     },
     "auth_ref": [
      "r1172"
     ]
    },
    "nbbk_LifeInsuranceCorporateOrBankOwnedGainLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "LifeInsuranceCorporateOrBankOwnedGainLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The gain (loss) during the period recognized during the period, including, but not limited to death benefit on bank owned life insurance contracts.",
        "label": "Life Insurance, Corporate or Bank Owned, Gain (Loss)",
        "negatedLabel": "Gain from BOLI death benefit"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_LoanAndLeaseTransferFromMortgageHeldInPortfolioToHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "LoanAndLeaseTransferFromMortgageHeldInPortfolioToHeldForSale",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Value of mortgage loans and leases held in the entity's portfolio transferred to loans and leases held-for-sale in non-cash transactions.",
        "label": "Loan and Lease, Transfer from Mortgage Held-in-Portfolio to Held-for-Sale",
        "terseLabel": "Mortgage loans transferred to loans held for sale"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_LoanOriginationCommitmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LoanOriginationCommitmentsMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesScheduleOfContractAmountsRepresentsOffBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loan Origination Commitments [Member]",
        "terseLabel": "Commitments to originate loans",
        "documentation": "Commitments to borrowers or third party investors for the origination of a loan."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_LoanRestructuringModificationAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LoanRestructuringModificationAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loan Restructuring Modification [Axis]",
        "documentation": "Information by concessions made to the terms of loan contracts."
       }
      }
     },
     "auth_ref": [
      "r241",
      "r242",
      "r244",
      "r877"
     ]
    },
    "us-gaap_LoanRestructuringModificationDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LoanRestructuringModificationDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loan Restructuring Modification [Domain]",
        "documentation": "Concessions made to the terms of loan contracts, including but not limited to, interest rate reductions, maturity extensions, principal forgiveness, and payment deferral."
       }
      }
     },
     "auth_ref": [
      "r241",
      "r242",
      "r244",
      "r877"
     ]
    },
    "us-gaap_LoansHeldForSaleFairValueDisclosure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LoansHeldForSaleFairValueDisclosure",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Assets",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loan, Held-for-Sale, Fair Value Disclosure",
        "terseLabel": "Loans held for sale, at fair value",
        "documentation": "Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables."
       }
      }
     },
     "auth_ref": [
      "r613",
      "r614",
      "r639",
      "r641",
      "r642",
      "r644",
      "r1341",
      "r1342",
      "r1343"
     ]
    },
    "us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LoansNotesTradeAndOtherReceivablesDisclosureTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQuality"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans, Notes, Trade and Other Receivables Disclosure [Text Block]",
        "terseLabel": "Loans Receivable, Allowance for Credit Losses and Credit Quality",
        "documentation": "The entire disclosure for claims held for amounts due to entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses."
       }
      }
     },
     "auth_ref": [
      "r655",
      "r1148"
     ]
    },
    "us-gaap_LoansReceivableFairValueDisclosure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LoansReceivableFairValueDisclosure",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans Receivable, Fair Value Disclosure",
        "terseLabel": "Loans receivable, net",
        "documentation": "Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts."
       }
      }
     },
     "auth_ref": [
      "r853",
      "r974",
      "r1354",
      "r1356",
      "r1357",
      "r1359"
     ]
    },
    "dei_LocalPhoneNumber": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "LocalPhoneNumber",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Local Phone Number",
        "documentation": "Local phone number for entity."
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_LongTermIncentivePlanMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "LongTermIncentivePlanMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the long-term incentive plan for certain members of management team.",
        "label": "Long-Term Incentive Plan [Member]",
        "terseLabel": "Long-Term Incentive Plan"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_LossContingenciesByNatureOfContingencyAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LossContingenciesByNatureOfContingencyAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loss Contingency Nature [Axis]",
        "documentation": "Information by type of existing condition, situation, or set of circumstances involving uncertainty as to possible loss to an enterprise that will ultimately be resolved when one or more future events occur or fail to occur."
       }
      }
     },
     "auth_ref": [
      "r232",
      "r336",
      "r337",
      "r338",
      "r342",
      "r453",
      "r752",
      "r902",
      "r1216",
      "r1217"
     ]
    },
    "us-gaap_LossContingenciesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LossContingenciesLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesScheduleOfContractAmountsRepresentsOffBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loss Contingencies [Line Items]",
        "terseLabel": "Commitment and Contingencies",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r232",
      "r336",
      "r337",
      "r338",
      "r342",
      "r453",
      "r902",
      "r1216",
      "r1217"
     ]
    },
    "us-gaap_LossContingenciesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LossContingenciesTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesScheduleOfContractAmountsRepresentsOffBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loss Contingencies [Table]",
        "documentation": "Disclosure of information about loss contingency. Excludes environmental contingency, warranty, and unconditional purchase obligation."
       }
      }
     },
     "auth_ref": [
      "r232",
      "r336",
      "r337",
      "r338",
      "r342",
      "r453",
      "r902",
      "r1216",
      "r1217"
     ]
    },
    "us-gaap_LossContingencyAccrualAtCarryingValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LossContingencyAccrualAtCarryingValue",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loss Contingency Accrual",
        "terseLabel": "Loss contingency accrual",
        "documentation": "Amount of loss contingency liability."
       }
      }
     },
     "auth_ref": [
      "r336",
      "r1086"
     ]
    },
    "us-gaap_LossContingencyNatureDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "LossContingencyNatureDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loss Contingency, Nature [Domain]",
        "documentation": "An existing condition, situation, or set of circumstances involving uncertainty as to possible loss to an enterprise that will ultimately be resolved when one or more future events occur or fail to occur. Resolution of the uncertainty may confirm the incurrence of a loss or impairment of an asset or the incurrence of a liability."
       }
      }
     },
     "auth_ref": [
      "r232",
      "r336",
      "r337",
      "r338",
      "r342",
      "r453",
      "r752",
      "r902",
      "r1216",
      "r1217"
     ]
    },
    "stpr_MA": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/stpr/2025",
     "localname": "MA",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "MASSACHUSETTS",
        "terseLabel": "Massachusetts"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_MarketingAndAdvertisingExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "MarketingAndAdvertisingExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestExpense",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Marketing and Advertising Expense",
        "terseLabel": "Marketing and charitable contribution expenses",
        "documentation": "The total expense recognized in the period for promotion, public relations, and brand or product advertising."
       }
      }
     },
     "auth_ref": [
      "r62",
      "r864"
     ]
    },
    "srt_MaximumMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "MaximumMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Maximum [Member]",
        "terseLabel": "Maximum",
        "documentation": "Upper limit of the provided range."
       }
      }
     },
     "auth_ref": [
      "r137",
      "r138",
      "r139",
      "r140",
      "r141",
      "r143",
      "r144",
      "r145",
      "r146",
      "r147",
      "r232",
      "r337",
      "r338",
      "r339",
      "r340",
      "r407",
      "r439",
      "r440",
      "r441",
      "r453",
      "r618",
      "r693",
      "r744",
      "r745",
      "r752",
      "r774",
      "r775",
      "r823",
      "r825",
      "r827",
      "r828",
      "r840",
      "r844",
      "r845",
      "r846",
      "r847",
      "r850",
      "r851",
      "r877",
      "r906",
      "r915",
      "r920",
      "r924",
      "r925",
      "r967",
      "r968",
      "r972",
      "r973",
      "r978",
      "r1224",
      "r1365",
      "r1366",
      "r1367",
      "r1368",
      "r1369",
      "r1370"
     ]
    },
    "ecd_MeasureAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "MeasureAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measure [Axis]",
        "terseLabel": "Measure:"
       }
      }
     },
     "auth_ref": [
      "r1046"
     ]
    },
    "ecd_MeasureName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "MeasureName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measure Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r1046"
     ]
    },
    "us-gaap_MeasurementInputAppraisedValueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "MeasurementInputAppraisedValueMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measurement Input, Appraised Value [Member]",
        "terseLabel": "Appraisals and/or sales of comparable properties",
        "documentation": "Measurement input using assessed value of property."
       }
      }
     },
     "auth_ref": [
      "r1341",
      "r1342",
      "r1343"
     ]
    },
    "us-gaap_MeasurementInputTypeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "MeasurementInputTypeAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measurement Input Type [Axis]",
        "documentation": "Information by type of measurement input used to determine value of asset and liability."
       }
      }
     },
     "auth_ref": [
      "r437",
      "r438",
      "r439",
      "r440",
      "r441",
      "r442",
      "r616",
      "r617",
      "r618",
      "r920",
      "r924",
      "r925",
      "r967"
     ]
    },
    "us-gaap_MeasurementInputTypeDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "MeasurementInputTypeDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measurement Input Type [Domain]",
        "documentation": "Measurement input used to determine value of asset and liability."
       }
      }
     },
     "auth_ref": [
      "r616",
      "r617",
      "r618",
      "r920",
      "r924",
      "r925",
      "r967"
     ]
    },
    "srt_MinimumMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "MinimumMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Minimum [Member]",
        "terseLabel": "Minimum",
        "documentation": "Lower limit of the provided range."
       }
      }
     },
     "auth_ref": [
      "r137",
      "r138",
      "r139",
      "r140",
      "r141",
      "r143",
      "r144",
      "r145",
      "r146",
      "r147",
      "r232",
      "r337",
      "r338",
      "r339",
      "r340",
      "r407",
      "r439",
      "r440",
      "r441",
      "r453",
      "r618",
      "r693",
      "r744",
      "r745",
      "r752",
      "r774",
      "r775",
      "r823",
      "r825",
      "r827",
      "r828",
      "r840",
      "r844",
      "r845",
      "r846",
      "r847",
      "r850",
      "r851",
      "r877",
      "r906",
      "r915",
      "r920",
      "r924",
      "r925",
      "r967",
      "r968",
      "r972",
      "r978",
      "r1224",
      "r1365",
      "r1366",
      "r1367",
      "r1368",
      "r1369",
      "r1370"
     ]
    },
    "ecd_MnpiDiscTimedForCompValFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "MnpiDiscTimedForCompValFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "MNPI Disclosure Timed for Compensation Value [Flag]",
        "terseLabel": "MNPI Disclosure Timed for Compensation Value"
       }
      }
     },
     "auth_ref": [
      "r1065"
     ]
    },
    "us-gaap_MortgageBackedSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "MortgageBackedSecuritiesMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Collateralized Mortgage-Backed Securities [Member]",
        "terseLabel": "Agency mortgage-backed securities",
        "verboseLabel": "Mortgage backed securities",
        "documentation": "Securities collateralized by mortgage loans."
       }
      }
     },
     "auth_ref": [
      "r907",
      "r908",
      "r909",
      "r910",
      "r911",
      "r1155",
      "r1159",
      "r1164",
      "r1165",
      "r1166",
      "r1382"
     ]
    },
    "nbbk_MortgageWarehouseMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "MortgageWarehouseMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the member information pertaining to mortgage warehouse.",
        "label": "Mortgage Warehouse [Member]",
        "terseLabel": "Mortgage warehouse, portfolio"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_MtrlTermsOfTrdArrTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "MtrlTermsOfTrdArrTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Material Terms of Trading Arrangement [Text Block]",
        "terseLabel": "Material Terms of Trading Arrangement"
       }
      }
     },
     "auth_ref": [
      "r1073"
     ]
    },
    "srt_MultifamilyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "MultifamilyMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Multifamily [Member]",
        "terseLabel": "Multi-family residential",
        "documentation": "Residential building containing multiple separate housing units."
       }
      }
     },
     "auth_ref": [
      "r1100",
      "r1101",
      "r1102",
      "r1103",
      "r1394",
      "r1395",
      "r1396",
      "r1397",
      "r1398"
     ]
    },
    "us-gaap_MunicipalBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "MunicipalBondsMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Municipal Bonds [Member]",
        "terseLabel": "Municipal obligations",
        "documentation": "Long-term debt securities issued by state, city or local governments or the agencies operated by state, city or local governments."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_NamedExecutiveOfficersFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NamedExecutiveOfficersFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Named Executive Officers, Footnote [Text Block]",
        "terseLabel": "Named Executive Officers, Footnote"
       }
      }
     },
     "auth_ref": [
      "r1047"
     ]
    },
    "nbbk_NeedhamBankMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "NeedhamBankMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the information pertaining to Needham Bank.",
        "label": "Needham Bank [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_NetCashProvidedByUsedInFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NetCashProvidedByUsedInFinancingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Cash Provided by (Used in) Financing Activities",
        "totalLabel": "NET CASH PROVIDED BY FINANCING ACTIVITIES",
        "documentation": "Amount of cash inflow (outflow) from financing activity, including, but not limited to, discontinued operation. Financing activity includes, but is not limited to, obtaining resource from owner and providing return on, and return of, their investment; borrowing money and repaying amount borrowed, or settling obligation; and obtaining and paying for other resource obtained from creditor on long-term credit."
       }
      }
     },
     "auth_ref": [
      "r185"
     ]
    },
    "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NetCashProvidedByUsedInFinancingActivitiesAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Cash Provided by (Used in) Financing Activities [Abstract]",
        "terseLabel": "CASH FLOWS FROM FINANCING ACTIVITIES"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_NetCashProvidedByUsedInInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NetCashProvidedByUsedInInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Cash Provided by (Used in) Investing Activities",
        "totalLabel": "NET CASH USED IN INVESTING ACTIVITIES",
        "documentation": "Amount of cash inflow (outflow) from investing activity, including, but not limited to, discontinued operation. Investing activity includes, but is not limited to, making and collecting loan, acquiring and disposing of debt and equity instruments, property, plant, and equipment, and other productive assets."
       }
      }
     },
     "auth_ref": [
      "r185"
     ]
    },
    "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NetCashProvidedByUsedInInvestingActivitiesAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Cash Provided by (Used in) Investing Activities [Abstract]",
        "terseLabel": "CASH FLOWS FROM INVESTING ACTIVITIES"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_NetCashProvidedByUsedInOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NetCashProvidedByUsedInOperatingActivities",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Cash Provided by (Used in) Operating Activities",
        "totalLabel": "NET CASH PROVIDED BY OPERATING ACTIVITIES",
        "documentation": "Amount of cash inflow (outflow) from operating activity, including, but not limited to, discontinued operation. Operating activity includes, but is not limited to, transaction, adjustment, and change in value not defined as investing or financing activity."
       }
      }
     },
     "auth_ref": [
      "r67",
      "r68",
      "r69"
     ]
    },
    "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NetCashProvidedByUsedInOperatingActivitiesAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Cash Provided by (Used in) Operating Activities [Abstract]",
        "terseLabel": "CASH FLOWS FROM OPERATING ACTIVITIES"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_NetIncomeLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NetIncomeLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfComprehensiveIncome": {
       "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfComprehensiveIncome",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome",
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "NET INCOME",
        "verboseLabel": "Net income",
        "label": "Net Income (Loss)",
        "terseLabel": "Net Income (Loss)",
        "documentation": "The portion of profit or loss for the period, net of income taxes, which is attributable to the parent."
       }
      }
     },
     "auth_ref": [
      "r60",
      "r69",
      "r95",
      "r150",
      "r154",
      "r167",
      "r170",
      "r174",
      "r192",
      "r195",
      "r196",
      "r197",
      "r202",
      "r206",
      "r207",
      "r208",
      "r209",
      "r210",
      "r213",
      "r214",
      "r219",
      "r280",
      "r343",
      "r344",
      "r345",
      "r346",
      "r347",
      "r348",
      "r349",
      "r350",
      "r351",
      "r356",
      "r359",
      "r361",
      "r365",
      "r446",
      "r470",
      "r528",
      "r611",
      "r646",
      "r737",
      "r803",
      "r818",
      "r819",
      "r862",
      "r864",
      "r866",
      "r991",
      "r1220"
     ]
    },
    "us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NewAccountingPronouncementsPolicyPolicyTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "New Accounting Pronouncements, Policy [Policy Text Block]",
        "terseLabel": "Recent Accounting Pronouncements",
        "documentation": "Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_NonGaapMeasureDescriptionTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonGaapMeasureDescriptionTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-GAAP Measure Description [Text Block]",
        "terseLabel": "Non-GAAP Measure Description"
       }
      }
     },
     "auth_ref": [
      "r1046"
     ]
    },
    "ecd_NonNeosMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonNeosMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-NEOs [Member]",
        "terseLabel": "Non-NEOs"
       }
      }
     },
     "auth_ref": [
      "r1010",
      "r1020",
      "r1030",
      "r1054",
      "r1062"
     ]
    },
    "ecd_NonPeoNeoAvgCompActuallyPaidAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonPeoNeoAvgCompActuallyPaidAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-PEO NEO Average Compensation Actually Paid Amount",
        "terseLabel": "Non-PEO NEO Average Compensation Actually Paid Amount"
       }
      }
     },
     "auth_ref": [
      "r1037"
     ]
    },
    "ecd_NonPeoNeoAvgTotalCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonPeoNeoAvgTotalCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-PEO NEO Average Total Compensation Amount",
        "terseLabel": "Non-PEO NEO Average Total Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r1036"
     ]
    },
    "ecd_NonPeoNeoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonPeoNeoMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-PEO NEO [Member]",
        "terseLabel": "Non-PEO NEO"
       }
      }
     },
     "auth_ref": [
      "r1054"
     ]
    },
    "nbbk_NonPublicInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "NonPublicInvestments",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Assets",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The carrying amount of the non-public investments as of the balance sheet date.",
        "label": "Non-public investments",
        "terseLabel": "Non-public investments"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_NonRule10b51ArrAdoptedFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonRule10b51ArrAdoptedFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-Rule 10b5-1 Arrangement Adopted [Flag]",
        "terseLabel": "Non-Rule 10b5-1 Arrangement Adopted"
       }
      }
     },
     "auth_ref": [
      "r1073"
     ]
    },
    "ecd_NonRule10b51ArrTrmntdFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonRule10b51ArrTrmntdFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-Rule 10b5-1 Arrangement Terminated [Flag]",
        "terseLabel": "Non-Rule 10b5-1 Arrangement Terminated"
       }
      }
     },
     "auth_ref": [
      "r1073"
     ]
    },
    "nbbk_NoncashInitialRecognitionOfOperatingLeaseLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "NoncashInitialRecognitionOfOperatingLeaseLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of noncash initial recognition of operating lease liabilities under ASC 842.",
        "label": "Noncash Initial Recognition Of Operating Lease Liabilities",
        "terseLabel": "Initial recognition of operating lease right of use assets and lease liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_NoncashInvestingAndFinancingItemsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NoncashInvestingAndFinancingItemsAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Noncash Investing and Financing Items [Abstract]",
        "terseLabel": "Supplemental disclosure of non-cash transactions:"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_NondesignatedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NondesignatedMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesNumberOfPositionsAndTotalNotionalAmountOfNonDesignatedHedgesAndRpasDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Not Designated as Hedging Instrument [Member]",
        "terseLabel": "Non-designated Hedges",
        "documentation": "Derivative instrument not designated as hedging instrument under Generally Accepted Accounting Principles (GAAP)."
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_NoninterestBearingDemandDepositsFairValueDisclosure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "NoninterestBearingDemandDepositsFairValueDisclosure",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fair value portion of noninterest-bearing demand deposits.",
        "label": "Noninterest-bearing Demand Deposits, Fair Value Disclosure",
        "terseLabel": "Deposits, other than time deposits"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_NoninterestExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NoninterestExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Noninterest Expense",
        "totalLabel": "Total noninterest expense",
        "documentation": "Total aggregate amount of all noninterest expense."
       }
      }
     },
     "auth_ref": [
      "r92",
      "r864"
     ]
    },
    "us-gaap_NoninterestExpenseAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NoninterestExpenseAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Noninterest Expense [Abstract]",
        "terseLabel": "NONINTEREST EXPENSE"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_NoninterestExpenseDirectorsAndProfessionalFees": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "NoninterestExpenseDirectorsAndProfessionalFees",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestExpense",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Noninterest expense related to directors' fees which are fees paid by an Entity to its directors. Directors' fees may be paid in addition to salary and other benefits and  fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.",
        "label": "Noninterest Expense Directors and Professional Fees",
        "terseLabel": "Director and professional service fees"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_NoninterestIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NoninterestIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Noninterest Income",
        "totalLabel": "Total noninterest income",
        "documentation": "The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified."
       }
      }
     },
     "auth_ref": [
      "r91",
      "r864"
     ]
    },
    "us-gaap_NoninterestIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NoninterestIncomeAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Noninterest Income [Abstract]",
        "terseLabel": "NONINTEREST INCOME"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_NoninterestIncomeOtherOperatingIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NoninterestIncomeOtherOperatingIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestIncome",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Noninterest Income, Other Operating Income",
        "terseLabel": "Other income",
        "documentation": "Amount of revenue earned, classified as other, excluding interest income."
       }
      }
     },
     "auth_ref": [
      "r58",
      "r91"
     ]
    },
    "nbbk_NumberOfLoans": {
     "xbrltype": "integerItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "NumberOfLoans",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The number of loans.",
        "label": "Number of Loans",
        "terseLabel": "Number of loans"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_NumberOfReportableSegments": {
     "xbrltype": "integerItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NumberOfReportableSegments",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationDetails",
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of Reportable Segments",
        "terseLabel": "Number of reportable segments",
        "documentation": "Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements."
       }
      }
     },
     "auth_ref": [
      "r873",
      "r876",
      "r1143"
     ]
    },
    "nbbk_OccupancyAndEquipmentExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "OccupancyAndEquipmentExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_NoninterestExpense",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of net occupancy expense that may include items, such as depreciation of facilities and equipment, lease expenses, property taxes and property and casualty insurance expense and equipment expense including depreciation, repairs, rentals, and service contract costs. This item also includes equipment purchases which do not qualify for capitalization in accordance with the entity's accounting policy. This item may also include furniture expenses.",
        "label": "Occupancy and Equipment Expenses",
        "terseLabel": "Occupancy and equipment expenses"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_OffBalanceSheetCreditLossLiability": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OffBalanceSheetCreditLossLiability",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Off-Balance-Sheet, Credit Loss, Liability",
        "terseLabel": "Reserve for unfunded commitments",
        "documentation": "Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging."
       }
      }
     },
     "auth_ref": [
      "r283",
      "r341"
     ]
    },
    "us-gaap_OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_ProvisionForLoanLossesExpensed",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)",
        "verboseLabel": "(Release of) provision for credit losses - unfunded commitments",
        "documentation": "Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging."
       }
      }
     },
     "auth_ref": [
      "r179",
      "r287"
     ]
    },
    "nbbk_OfficersDeferredCompensationPlansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "OfficersDeferredCompensationPlansMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the unfunded, defined contribution, Non-qualified Deferred Compensation Plan.",
        "label": "Officers Deferred Compensation Plans [Member]",
        "terseLabel": "Officers Deferred Compensation Plan"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_OneToFourFamilyResidentialMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "OneToFourFamilyResidentialMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information relating to one to four family residential.",
        "label": "One to Four Family Residential [Member]",
        "terseLabel": "One to four-family residential"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Corporate Structure and Nature of Operations Basis of Presentation"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]",
        "terseLabel": "Corporate Structure and Nature of Operations; Basis of Presentation",
        "documentation": "The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure."
       }
      }
     },
     "auth_ref": [
      "r74",
      "r151",
      "r152",
      "r153",
      "r754",
      "r755"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfComprehensiveIncome": {
       "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent",
        "terseLabel": "Net change in fair value of available-for-sale securities",
        "verboseLabel": "Net change in fair value of available-for-sale securities, After-Tax Amount",
        "documentation": "Amount, after tax and reclassification adjustment, of gain (loss) in value of unsold investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), attributable to parent."
       }
      }
     },
     "auth_ref": [
      "r7",
      "r13",
      "r75"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPeriodIncreaseDecreaseAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPeriodIncreaseDecreaseAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax [Abstract]",
        "terseLabel": "Fair value of cash flow hedge"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment and Tax",
        "terseLabel": "Change in fair value of available-for-sale securities, Pre-Tax Amount",
        "documentation": "Amount, before tax and adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale."
       }
      }
     },
     "auth_ref": [
      "r162",
      "r163"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTaxAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTaxAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment and Tax [Abstract]",
        "terseLabel": "Fair value of available-for-sale securities"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, after Tax",
        "terseLabel": "Change in fair value of available-for-sale securities, After-Tax Amount",
        "documentation": "Amount, after tax and before adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale."
       }
      }
     },
     "auth_ref": [
      "r162",
      "r163"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax",
        "terseLabel": "Net change in fair value of available-for-sale securities, Pre-Tax Amount",
        "documentation": "Amount, before tax and after adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale."
       }
      }
     },
     "auth_ref": [
      "r162",
      "r163",
      "r164",
      "r738"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesBeforeReclassificationAdjustmentsTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesBeforeReclassificationAdjustmentsTax",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, Tax",
        "negatedLabel": "Change in fair value of available-for-sale securities, Tax (Expense) Benefit",
        "documentation": "Amount, before adjustment, of tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale."
       }
      }
     },
     "auth_ref": [
      "r5"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax",
        "negatedLabel": "Net change in fair value of available-for-sale securities, Tax (Expense) Benefit",
        "documentation": "Amount, after adjustment, of tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale."
       }
      }
     },
     "auth_ref": [
      "r162",
      "r163",
      "r165"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails": {
       "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), before Tax",
        "terseLabel": "Other comprehensive income (loss), Pre-Tax Amount",
        "documentation": "Amount before tax, after reclassification adjustments of other comprehensive income (loss)."
       }
      }
     },
     "auth_ref": [
      "r175",
      "r648",
      "r649",
      "r654",
      "r703",
      "r738",
      "r1118",
      "r1119"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfComprehensiveIncome": {
       "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent",
        "terseLabel": "Net change in fair value of cash flow hedge",
        "verboseLabel": "Net change in fair value of cash flow hedge, net of tax, After-Tax Amount",
        "documentation": "Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, attributable to parent."
       }
      }
     },
     "auth_ref": [
      "r164"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax, Parent",
        "terseLabel": "Net change in fair value of cash flow hedge, net of tax, Pre-Tax Amount",
        "documentation": "Amount, before tax and after reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness, attributable to parent."
       }
      }
     },
     "auth_ref": [
      "r164"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax",
        "negatedLabel": "Net change in fair value of cash flow hedge, net of tax, Tax (Expense) Benefit",
        "documentation": "Amount, after reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness."
       }
      }
     },
     "auth_ref": [
      "r165"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax",
        "terseLabel": "Change in fair value of cash flow hedge, After-Tax Amount",
        "documentation": "Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness."
       }
      }
     },
     "auth_ref": [
      "r161",
      "r164"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax",
        "terseLabel": "Change in fair value of cash flow hedge, Pre-Tax Amount",
        "documentation": "Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness."
       }
      }
     },
     "auth_ref": [
      "r161",
      "r164",
      "r550",
      "r557",
      "r597",
      "r960"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax",
        "negatedLabel": "Change in fair value of cash flow hedge, Tax (Expense) Benefit",
        "documentation": "Amount, before reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness."
       }
      }
     },
     "auth_ref": [
      "r165"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativePositionsAtDatesIndicatedBelowForInterestRateSwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Less: Net cash flow hedge gain (losses) reclassified into interest income or interest expense, Pre-Tax Amount",
        "terseLabel": "Net interest income",
        "documentation": "Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness."
       }
      }
     },
     "auth_ref": [
      "r164",
      "r166",
      "r559",
      "r960"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Net of Tax",
        "totalLabel": "Other comprehensive income (loss), After-Tax Amount",
        "verboseLabel": "Other comprehensive income (loss), net of tax",
        "documentation": "Amount after tax and reclassification adjustments of other comprehensive income (loss)."
       }
      }
     },
     "auth_ref": [
      "r14",
      "r15",
      "r168",
      "r171",
      "r175",
      "r210",
      "r648",
      "r649",
      "r654",
      "r703",
      "r738",
      "r1118",
      "r1119"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfComprehensiveIncome": {
       "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent",
        "totalLabel": "TOTAL OTHER COMPREHENSIVE INCOME, NET OF TAX:",
        "documentation": "Amount after tax of other comprehensive income (loss) attributable to parent entity."
       }
      }
     },
     "auth_ref": [
      "r7",
      "r13",
      "r75",
      "r168",
      "r171",
      "r210"
     ]
    },
    "us-gaap_OtherComprehensiveIncomeLossTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherComprehensiveIncomeLossTax",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails": {
       "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeReconciliationOfChangesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Tax",
        "negatedLabel": "Other comprehensive income (loss), Tax (Expense) Benefit",
        "documentation": "Amount of tax expense (benefit) allocated to other comprehensive income (loss)."
       }
      }
     },
     "auth_ref": [
      "r5",
      "r172",
      "r175",
      "r456",
      "r465",
      "r466",
      "r648",
      "r652",
      "r654",
      "r703",
      "r738"
     ]
    },
    "us-gaap_OtherDepreciationAndAmortization": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "OtherDepreciationAndAmortization",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Depreciation and Amortization",
        "terseLabel": "Depreciation and amortization expense",
        "documentation": "Amount of expense charged against earnings to allocate the cost of tangible and intangible assets over their remaining economic lives, classified as other."
       }
      }
     },
     "auth_ref": [
      "r10",
      "r31",
      "r61"
     ]
    },
    "ecd_OtherPerfMeasureAmt": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "OtherPerfMeasureAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Performance Measure, Amount",
        "terseLabel": "Other Performance Measure, Amount"
       }
      }
     },
     "auth_ref": [
      "r1046"
     ]
    },
    "ecd_OutstandingAggtErrCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "OutstandingAggtErrCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Outstanding Aggregate Erroneous Compensation Amount",
        "terseLabel": "Outstanding Aggregate Erroneous Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r1008",
      "r1018",
      "r1028",
      "r1060"
     ]
    },
    "ecd_OutstandingRecoveryCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "OutstandingRecoveryCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Outstanding Recovery Compensation Amount",
        "terseLabel": "Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r1011",
      "r1021",
      "r1031",
      "r1063"
     ]
    },
    "ecd_OutstandingRecoveryIndName": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "OutstandingRecoveryIndName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Outstanding Recovery, Individual Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r1011",
      "r1021",
      "r1031",
      "r1063"
     ]
    },
    "us-gaap_PassMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PassMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pass [Member]",
        "terseLabel": "Pass",
        "documentation": "A category of financing receivables not considered to be special mention, substandard, doubtful, and loss receivables."
       }
      }
     },
     "auth_ref": [
      "r108",
      "r109",
      "r110",
      "r1184",
      "r1185"
     ]
    },
    "us-gaap_PastDueFinancingReceivablesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PastDueFinancingReceivablesTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Past Due [Table Text Block]",
        "terseLabel": "Schedule of aging of the amortized cost of loans receivable by loan category",
        "documentation": "Tabular disclosure of aging analysis for financing receivable."
       }
      }
     },
     "auth_ref": [
      "r899",
      "r1182"
     ]
    },
    "ecd_PayVsPerformanceDisclosureLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PayVsPerformanceDisclosureLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Pay vs Performance Disclosure [Line Items]",
        "terseLabel": "Pay vs Performance Disclosure"
       }
      }
     },
     "auth_ref": [
      "r1035"
     ]
    },
    "us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PaymentsForOriginationAndPurchasesOfLoansHeldForSale",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payment for Origination and Purchase, Loan, Held-for-Sale",
        "negatedLabel": "Loans originated for sale",
        "documentation": "The aggregate amount of cash outflow for loans purchased and created with the intention to resell them in the near future."
       }
      }
     },
     "auth_ref": [
      "r122"
     ]
    },
    "nbbk_PaymentsForProceedsFromNonPublicInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "PaymentsForProceedsFromNonPublicInvestments",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash outflow (inflow) from acquisition or sale of non-public investments.",
        "label": "Payments for (Proceeds from) Non Public Investments",
        "terseLabel": "Net change in non-public investments"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_PaymentsForRepurchaseOfCommonStock": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PaymentsForRepurchaseOfCommonStock",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payments for Repurchase of Common Stock",
        "negatedLabel": "Repurchase of common shares under share repurchase plans",
        "documentation": "The cash outflow to reacquire common stock during the period."
       }
      }
     },
     "auth_ref": [
      "r66"
     ]
    },
    "us-gaap_PaymentsOfDividendsCommonStock": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PaymentsOfDividendsCommonStock",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payments of Ordinary Dividends, Common Stock",
        "negatedLabel": "Dividends paid",
        "documentation": "Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity."
       }
      }
     },
     "auth_ref": [
      "r66"
     ]
    },
    "us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PaymentsToAcquireAvailableForSaleSecuritiesDebt",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payments to Acquire Debt Securities, Available-for-Sale",
        "negatedLabel": "Purchases of available-for-sale securities",
        "documentation": "Amount of cash outflow to acquire investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale)."
       }
      }
     },
     "auth_ref": [
      "r22",
      "r181",
      "r246"
     ]
    },
    "us-gaap_PaymentsToAcquireBusinessesGross": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PaymentsToAcquireBusinessesGross",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payments to Acquire Businesses, Gross",
        "terseLabel": "Consideration paid in cash",
        "documentation": "The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price."
       }
      }
     },
     "auth_ref": [
      "r23",
      "r512",
      "r920",
      "r922",
      "r954"
     ]
    },
    "us-gaap_PaymentsToAcquireLifeInsurancePolicies": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PaymentsToAcquireLifeInsurancePolicies",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payment to Acquire Life Insurance Policy, Investing Activities",
        "negatedLabel": "Purchases of BOLI policies",
        "documentation": "Amount of cash outflow for payment of premium on corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy."
       }
      }
     },
     "auth_ref": [
      "r8",
      "r64"
     ]
    },
    "us-gaap_PaymentsToAcquireLoansReceivable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PaymentsToAcquireLoansReceivable",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payments to Acquire Loans Receivable",
        "terseLabel": "Loans purchased",
        "documentation": "The cash outflow for the purchase of loan receivable arising from the financing of goods and services."
       }
      }
     },
     "auth_ref": [
      "r22"
     ]
    },
    "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PaymentsToAcquirePropertyPlantAndEquipment",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payments to Acquire Property, Plant, and Equipment",
        "negatedLabel": "Purchases of banking premises and equipment",
        "documentation": "The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets."
       }
      }
     },
     "auth_ref": [
      "r65"
     ]
    },
    "nbbk_PeerGroupFinancialInstitutionsSize": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "PeerGroupFinancialInstitutionsSize",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the total size in total assets of the peer group comprised of financial institution.",
        "label": "Peer Group Financial Institutions Size",
        "terseLabel": "Peer group financial institution size"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_PeerGroupIssuersFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PeerGroupIssuersFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Peer Group Issuers, Footnote [Text Block]",
        "terseLabel": "Peer Group Issuers, Footnote"
       }
      }
     },
     "auth_ref": [
      "r1045"
     ]
    },
    "ecd_PeerGroupTotalShareholderRtnAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PeerGroupTotalShareholderRtnAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Peer Group Total Shareholder Return Amount",
        "terseLabel": "Peer Group Total Shareholder Return Amount"
       }
      }
     },
     "auth_ref": [
      "r1045"
     ]
    },
    "us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDirectorPensionPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liability, Defined Benefit Plan",
        "terseLabel": "Accrued retirement liabilities",
        "documentation": "Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans."
       }
      }
     },
     "auth_ref": [
      "r81",
      "r369",
      "r370",
      "r389",
      "r1380"
     ]
    },
    "ecd_PeoActuallyPaidCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PeoActuallyPaidCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PEO Actually Paid Compensation Amount",
        "terseLabel": "PEO Actually Paid Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r1037"
     ]
    },
    "ecd_PeoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PeoMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PEO [Member]",
        "terseLabel": "PEO"
       }
      }
     },
     "auth_ref": [
      "r1054"
     ]
    },
    "ecd_PeoName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PeoName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PEO Name",
        "terseLabel": "PEO Name"
       }
      }
     },
     "auth_ref": [
      "r1047"
     ]
    },
    "ecd_PeoTotalCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PeoTotalCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PEO Total Compensation Amount",
        "terseLabel": "PEO Total Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r1036"
     ]
    },
    "us-gaap_PlanNameAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PlanNameAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Plan Name [Axis]",
        "documentation": "Information by plan name for share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r1286",
      "r1287",
      "r1288",
      "r1289",
      "r1290",
      "r1291",
      "r1292",
      "r1293",
      "r1294",
      "r1295",
      "r1296",
      "r1297",
      "r1298",
      "r1299",
      "r1300",
      "r1301",
      "r1302",
      "r1303",
      "r1304",
      "r1305",
      "r1306",
      "r1307",
      "r1308",
      "r1309",
      "r1310",
      "r1311"
     ]
    },
    "us-gaap_PlanNameDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PlanNameDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Plan Name [Domain]",
        "documentation": "Plan name for share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r1286",
      "r1287",
      "r1288",
      "r1289",
      "r1290",
      "r1291",
      "r1292",
      "r1293",
      "r1294",
      "r1295",
      "r1296",
      "r1297",
      "r1298",
      "r1299",
      "r1300",
      "r1301",
      "r1302",
      "r1303",
      "r1304",
      "r1305",
      "r1306",
      "r1307",
      "r1308",
      "r1309",
      "r1310",
      "r1311"
     ]
    },
    "nbbk_PlanOfConversionLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "PlanOfConversionLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Plan of Conversion [Line Items]",
        "terseLabel": "Corporate Structure and Nature of Operations Basis of Presentation"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_PlanOfConversionTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "PlanOfConversionTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Summarization of the plan of conversion.",
        "label": "Plan of Conversion [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_PledgedStatusAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PledgedStatusAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pledged Status [Axis]",
        "documentation": "Information by pledged or not pledged status of asset owned by entity."
       }
      }
     },
     "auth_ref": [
      "r192",
      "r194",
      "r530",
      "r777",
      "r956"
     ]
    },
    "us-gaap_PledgedStatusDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PledgedStatusDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pledged Status [Domain]",
        "documentation": "Pledged or not pledged status of asset owned by entity."
       }
      }
     },
     "auth_ref": [
      "r192",
      "r194",
      "r530",
      "r777",
      "r956"
     ]
    },
    "us-gaap_PledgingPurposeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PledgingPurposeAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pledging Purpose [Axis]",
        "documentation": "Information by pledging purpose of pledged asset owned."
       }
      }
     },
     "auth_ref": [
      "r192",
      "r194",
      "r675",
      "r956",
      "r976",
      "r1087"
     ]
    },
    "us-gaap_PledgingPurposeDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PledgingPurposeDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pledging Purpose [Domain]",
        "documentation": "Pledging purpose of pledged asset owned."
       }
      }
     },
     "auth_ref": [
      "r192",
      "r194",
      "r675",
      "r956",
      "r976",
      "r1087"
     ]
    },
    "ecd_PnsnAdjsPrrSvcCstMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PnsnAdjsPrrSvcCstMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pension Adjustments Prior Service Cost [Member]",
        "terseLabel": "Pension Adjustments Prior Service Cost"
       }
      }
     },
     "auth_ref": [
      "r1038"
     ]
    },
    "ecd_PnsnAdjsSvcCstMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PnsnAdjsSvcCstMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pension Adjustments Service Cost [Member]",
        "terseLabel": "Pension Adjustments Service Cost"
       }
      }
     },
     "auth_ref": [
      "r1082"
     ]
    },
    "ecd_PnsnBnftsAdjFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PnsnBnftsAdjFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pension Benefits Adjustments, Footnote [Text Block]",
        "terseLabel": "Pension Benefits Adjustments, Footnote"
       }
      }
     },
     "auth_ref": [
      "r1037"
     ]
    },
    "us-gaap_PreferredStockParOrStatedValuePerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PreferredStockParOrStatedValuePerShare",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheetsParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Preferred Stock, Par or Stated Value Per Share",
        "terseLabel": "Preferred Stock, Par or Stated Value Per Share (in dollars per share)",
        "documentation": "Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer."
       }
      }
     },
     "auth_ref": [
      "r46",
      "r366"
     ]
    },
    "us-gaap_PreferredStockSharesAuthorized": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PreferredStockSharesAuthorized",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheetsParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Preferred Stock, Shares Authorized",
        "terseLabel": "Preferred Stock, Shares Authorized",
        "documentation": "The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws."
       }
      }
     },
     "auth_ref": [
      "r46",
      "r784"
     ]
    },
    "us-gaap_PreferredStockSharesIssued": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PreferredStockSharesIssued",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheetsParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Preferred Stock, Shares Issued",
        "terseLabel": "Preferred Stock, Shares Issued",
        "documentation": "Number of shares issued for nonredeemable preferred shares and preferred shares redeemable solely at option of issuer. Includes, but is not limited to, preferred shares issued, repurchased, and held as treasury shares. Excludes preferred shares classified as debt."
       }
      }
     },
     "auth_ref": [
      "r46",
      "r366"
     ]
    },
    "us-gaap_PreferredStockSharesOutstanding": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PreferredStockSharesOutstanding",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheetsParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Preferred Stock, Shares Outstanding",
        "terseLabel": "Preferred Stock, Shares Outstanding",
        "documentation": "Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased."
       }
      }
     },
     "auth_ref": [
      "r46",
      "r784",
      "r802",
      "r1390",
      "r1391"
     ]
    },
    "us-gaap_PreferredStockValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PreferredStockValue",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Preferred Stock, Value, Issued",
        "terseLabel": "Preferred stock, $0.01 par value, 5,000,000 shares authorized; no shares issued and outstanding",
        "documentation": "Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity."
       }
      }
     },
     "auth_ref": [
      "r46",
      "r358",
      "r363",
      "r729",
      "r975"
     ]
    },
    "us-gaap_PrepaidExpenseAndOtherAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PrepaidExpenseAndOtherAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Assets",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Prepaid Expense and Other Assets",
        "terseLabel": "Prepaid expenses and other assets",
        "documentation": "Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PrepaidExpensesAndOtherCurrentAssetsMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Prepaid Expenses and Other Current Assets [Member]",
        "terseLabel": "Prepaid expenses and other assets",
        "documentation": "Primary financial statement caption encompassing prepaid expenses and other current assets."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ProceedsFromFederalHomeLoanBankBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ProceedsFromFederalHomeLoanBankBorrowings",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease in FHLB borrowings, net",
        "terseLabel": "Advances of FHLB borrowings",
        "documentation": "Amount of cash inflow from Federal Home Loan Bank (FHLBank) borrowing, classified as financing activity."
       }
      }
     },
     "auth_ref": [
      "r1124"
     ]
    },
    "us-gaap_ProceedsFromLifeInsurancePolicies": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ProceedsFromLifeInsurancePolicies",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from Life Insurance Policy",
        "terseLabel": "Proceeds from BOLI death benefit",
        "documentation": "Amount of cash inflow for proceeds from settlement of corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy."
       }
      }
     },
     "auth_ref": [
      "r8",
      "r20"
     ]
    },
    "nbbk_ProceedsFromLoanOriginationsNetOfRepayments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "ProceedsFromLoanOriginationsNetOfRepayments",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The net cash outflow or inflow for the increase (decrease) in the beginning and end of period of loan  originated.",
        "label": "Proceeds from Loan Originations, Net of Repayments",
        "negatedLabel": "Loan originations and purchases, net of repayments"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale",
        "terseLabel": "Proceeds from maturities, calls and paydowns of available-for-sale securities",
        "documentation": "Amount of cash inflow from maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale)."
       }
      }
     },
     "auth_ref": [
      "r181",
      "r182",
      "r1154"
     ]
    },
    "us-gaap_ProceedsFromRecoveriesOfLoanPreviouslyChargedOff": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ProceedsFromRecoveriesOfLoanPreviouslyChargedOff",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds, Financing Receivable, Previously Written off, Recovery",
        "terseLabel": "Recoveries of loans previously charged off",
        "documentation": "Amount of cash inflow from recovery of financing receivable, previously written off."
       }
      }
     },
     "auth_ref": [
      "r1123"
     ]
    },
    "us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ProceedsFromSaleOfAvailableForSaleSecuritiesDebt",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from Sale of Debt Securities, Available-for-Sale",
        "terseLabel": "Proceeds from sales of available-for-sale securities",
        "documentation": "Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale)."
       }
      }
     },
     "auth_ref": [
      "r21",
      "r181",
      "r246",
      "r279"
     ]
    },
    "us-gaap_ProceedsFromSaleOfLoansHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ProceedsFromSaleOfLoansHeldForSale",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from Sale, Loan, Held-for-Sale",
        "terseLabel": "Proceeds from sale of loans held for sale",
        "documentation": "The cash inflow resulting from the sale of loans classified as held-for-sale, including proceeds from loans sold through mortgage securitization."
       }
      }
     },
     "auth_ref": [
      "r1126",
      "r1127"
     ]
    },
    "nbbk_ProceedsFromSurrenderOfBankOwnedLifeInsurancePolicies": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "ProceedsFromSurrenderOfBankOwnedLifeInsurancePolicies",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Proceeds from surrender of bank owned life insurance policies",
        "label": "Proceeds from surrender of bank owned life insurance policies",
        "terseLabel": "Proceeds from surrender of BOLI policies"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ProfitLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ProfitLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Income (Loss), Including Portion Attributable to Noncontrolling Interest",
        "terseLabel": "Net income",
        "documentation": "The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest."
       }
      }
     },
     "auth_ref": [
      "r150",
      "r154",
      "r167",
      "r170",
      "r184",
      "r192",
      "r195",
      "r196",
      "r197",
      "r202",
      "r210",
      "r213",
      "r214",
      "r280",
      "r343",
      "r344",
      "r345",
      "r346",
      "r347",
      "r348",
      "r349",
      "r350",
      "r351",
      "r356",
      "r446",
      "r470",
      "r528",
      "r529",
      "r532",
      "r533",
      "r611",
      "r646",
      "r707",
      "r709",
      "r736",
      "r760",
      "r803",
      "r818",
      "r819",
      "r957",
      "r958",
      "r992",
      "r1120",
      "r1220"
     ]
    },
    "us-gaap_PropertyPlantAndEquipmentNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "PropertyPlantAndEquipmentNet",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_Assets",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Property, Plant and Equipment, Net",
        "terseLabel": "Banking premises and equipment, net",
        "documentation": "Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures."
       }
      }
     },
     "auth_ref": [
      "r11",
      "r658",
      "r716",
      "r734",
      "r975"
     ]
    },
    "nbbk_ProvidentBancorpInc.AndBankprovMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "ProvidentBancorpInc.AndBankprovMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails",
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the member information pertaining to Provident Bancorp, Inc. and BankProv (\"Provident\").",
        "label": "Provident Bancorp, Inc. and BankProv [Member]",
        "terseLabel": "Provident"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ProvisionForLoanLeaseAndOtherLosses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ProvisionForLoanLeaseAndOtherLosses",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Provision for Loan, Lease, and Other Losses",
        "terseLabel": "Provision for credit losses",
        "documentation": "Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value."
       }
      }
     },
     "auth_ref": [
      "r9",
      "r86",
      "r107",
      "r864"
     ]
    },
    "us-gaap_ProvisionForLoanLossesExpensed": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ProvisionForLoanLossesExpensed",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Credit Loss, Expense (Reversal)",
        "totalLabel": "Total provision for credit losses",
        "documentation": "Amount of credit loss expense (reversal of expense) for financing receivable."
       }
      }
     },
     "auth_ref": [
      "r179",
      "r287",
      "r701"
     ]
    },
    "nbbk_PublicOfferingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "PublicOfferingMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the sale of stock by a private company to the public.",
        "label": "Public Offering [Member]",
        "terseLabel": "Public offering"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_PvpTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PvpTable",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pay vs Performance Disclosure [Table]",
        "terseLabel": "Pay vs Performance Disclosure"
       }
      }
     },
     "auth_ref": [
      "r1035"
     ]
    },
    "ecd_PvpTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PvpTableTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pay vs Performance [Table Text Block]",
        "terseLabel": "Pay vs Performance Disclosure, Table"
       }
      }
     },
     "auth_ref": [
      "r1035"
     ]
    },
    "srt_RangeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "RangeAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statistical Measurement [Axis]",
        "documentation": "Information by statistical measurement. Includes, but is not limited to, minimum, maximum, weighted average, arithmetic average, and median."
       }
      }
     },
     "auth_ref": [
      "r137",
      "r138",
      "r139",
      "r140",
      "r141",
      "r143",
      "r144",
      "r145",
      "r146",
      "r147",
      "r232",
      "r337",
      "r338",
      "r339",
      "r340",
      "r371",
      "r407",
      "r439",
      "r440",
      "r441",
      "r445",
      "r453",
      "r618",
      "r667",
      "r677",
      "r693",
      "r744",
      "r745",
      "r752",
      "r774",
      "r775",
      "r823",
      "r825",
      "r827",
      "r828",
      "r840",
      "r844",
      "r845",
      "r846",
      "r847",
      "r850",
      "r851",
      "r877",
      "r906",
      "r915",
      "r920",
      "r924",
      "r925",
      "r967",
      "r968",
      "r972",
      "r973",
      "r978",
      "r983",
      "r1214",
      "r1224",
      "r1342",
      "r1366",
      "r1367",
      "r1368",
      "r1369",
      "r1370"
     ]
    },
    "srt_RangeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "RangeMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statistical Measurement [Domain]",
        "documentation": "Statistical measurement. Includes, but is not limited to, minimum, maximum, weighted average, arithmetic average, and median."
       }
      }
     },
     "auth_ref": [
      "r137",
      "r138",
      "r139",
      "r140",
      "r141",
      "r143",
      "r144",
      "r145",
      "r146",
      "r147",
      "r232",
      "r337",
      "r338",
      "r339",
      "r340",
      "r371",
      "r407",
      "r439",
      "r440",
      "r441",
      "r445",
      "r453",
      "r618",
      "r667",
      "r677",
      "r693",
      "r744",
      "r745",
      "r752",
      "r774",
      "r775",
      "r823",
      "r825",
      "r827",
      "r828",
      "r840",
      "r844",
      "r845",
      "r846",
      "r847",
      "r850",
      "r851",
      "r877",
      "r906",
      "r915",
      "r920",
      "r924",
      "r925",
      "r967",
      "r968",
      "r972",
      "r973",
      "r978",
      "r983",
      "r1214",
      "r1224",
      "r1342",
      "r1366",
      "r1367",
      "r1368",
      "r1369",
      "r1370"
     ]
    },
    "us-gaap_ReceivablesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ReceivablesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans Receivable, Allowance for Credit Losses and Credit Quality"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]",
        "verboseLabel": "Schedule of other comprehensive income (loss) and related tax effects",
        "documentation": "Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss)."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_RecoveryOfErrCompDisclosureLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "RecoveryOfErrCompDisclosureLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Recovery of Erroneously Awarded Compensation Disclosure [Line Items]",
        "terseLabel": "Recovery of Erroneously Awarded Compensation Disclosure"
       }
      }
     },
     "auth_ref": [
      "r1003",
      "r1013",
      "r1023",
      "r1055"
     ]
    },
    "srt_RegulatoryCapitalRequirementsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "RegulatoryCapitalRequirementsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Regulatory Capital Requirements"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_RegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "RegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Regulatory Capital Requirements under Banking Regulations [Text Block]",
        "verboseLabel": "Regulatory Capital Requirements",
        "documentation": "The entire disclosure for regulatory capital requirement for depository and lending institutions. Institutions include, but not are not limited to, finance company, insured depository institution, bank holding company, savings and loan association holding company, bank and savings institution not federally insured, mortgage company, foreign financial institution and credit union."
       }
      }
     },
     "auth_ref": [
      "r717",
      "r718",
      "r719",
      "r721",
      "r722",
      "r723",
      "r725",
      "r726"
     ]
    },
    "us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "RepaymentsOfFederalHomeLoanBankBorrowings",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payments of FHLBank Borrowings, Financing Activities",
        "negatedLabel": "Paydowns of FHLB borrowings",
        "documentation": "Amount of cash outflow for repayment of Federal Home Loan Bank (FHLBank) borrowing, classified as financing activity."
       }
      }
     },
     "auth_ref": [
      "r1125"
     ]
    },
    "us-gaap_ResidentialPortfolioSegmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ResidentialPortfolioSegmentMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Residential Portfolio Segment [Member]",
        "terseLabel": "Residential real estate, portfolio",
        "documentation": "Portfolio segment of the company's total financing receivables related to residential financing receivables."
       }
      }
     },
     "auth_ref": [
      "r1174",
      "r1176",
      "r1177",
      "r1178",
      "r1179",
      "r1180",
      "r1181"
     ]
    },
    "ecd_RestatementDateAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "RestatementDateAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restatement Determination Date [Axis]",
        "terseLabel": "Restatement Determination Date:"
       }
      }
     },
     "auth_ref": [
      "r1004",
      "r1014",
      "r1024",
      "r1056"
     ]
    },
    "ecd_RestatementDeterminationDate": {
     "xbrltype": "dateItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "RestatementDeterminationDate",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restatement Determination Date",
        "terseLabel": "Restatement Determination Date"
       }
      }
     },
     "auth_ref": [
      "r1005",
      "r1015",
      "r1025",
      "r1057"
     ]
    },
    "ecd_RestatementDoesNotRequireRecoveryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "RestatementDoesNotRequireRecoveryTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restatement Does Not Require Recovery [Text Block]",
        "terseLabel": "Restatement does not require Recovery"
       }
      }
     },
     "auth_ref": [
      "r1012",
      "r1022",
      "r1032",
      "r1064"
     ]
    },
    "nbbk_RestrictedStockAndRestrictedStockUnitAwardsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "RestrictedStockAndRestrictedStockUnitAwardsMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Restricted stock and restricted stock units awarded by a company to their employees as a form of incentive compensation.",
        "label": "Restricted Stock and Restricted Stock Unit Awards [Member]",
        "terseLabel": "Restricted stock and restricted stock units"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_RestrictedStockMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "RestrictedStockMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsRestrictedStockAwardActivitiesDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsScheduleOfCompensationExpenseDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restricted Stock [Member]",
        "terseLabel": "Restricted Stock",
        "documentation": "Stock including a provision that prohibits sale or substantive sale of an equity instrument for a specified period of time or until specified performance conditions are met."
       }
      }
     },
     "auth_ref": [
      "r1141",
      "r1286",
      "r1287",
      "r1288",
      "r1289",
      "r1290",
      "r1291",
      "r1292",
      "r1293",
      "r1294",
      "r1295",
      "r1296",
      "r1297",
      "r1298",
      "r1299",
      "r1300",
      "r1301",
      "r1302",
      "r1303",
      "r1304",
      "r1305",
      "r1306",
      "r1307",
      "r1308",
      "r1309",
      "r1310",
      "r1311"
     ]
    },
    "us-gaap_RetainedEarningsAccumulatedDeficit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "RetainedEarningsAccumulatedDeficit",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retained Earnings (Accumulated Deficit)",
        "terseLabel": "Retained earnings",
        "documentation": "Amount of accumulated undistributed earnings (deficit)."
       }
      }
     },
     "auth_ref": [
      "r50",
      "r72",
      "r732",
      "r749",
      "r751",
      "r759",
      "r785",
      "r975"
     ]
    },
    "us-gaap_RetainedEarningsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "RetainedEarningsMember",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retained Earnings",
        "terseLabel": "Retained Earnings",
        "documentation": "Accumulated undistributed earnings (deficit)."
       }
      }
     },
     "auth_ref": [
      "r148",
      "r149",
      "r150",
      "r199",
      "r200",
      "r201",
      "r203",
      "r210",
      "r212",
      "r214",
      "r281",
      "r282",
      "r332",
      "r355",
      "r446",
      "r462",
      "r463",
      "r467",
      "r468",
      "r469",
      "r471",
      "r527",
      "r528",
      "r598",
      "r600",
      "r601",
      "r603",
      "r609",
      "r656",
      "r657",
      "r746",
      "r748",
      "r761",
      "r1390"
     ]
    },
    "us-gaap_RetirementPlanNameAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "RetirementPlanNameAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDirectorPensionPlanDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeePensionPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retirement Plan Name [Axis]",
        "terseLabel": "Retirement Plan Name [Axis]",
        "documentation": "Information by name of plan designed to provide retirement benefits. Includes, but is not limited to, legal name of defined benefit and defined contribution plans."
       }
      }
     },
     "auth_ref": [
      "r404",
      "r405",
      "r406",
      "r407",
      "r408",
      "r409",
      "r410",
      "r411",
      "r412",
      "r915",
      "r1088",
      "r1225",
      "r1226",
      "r1227",
      "r1228",
      "r1229",
      "r1230",
      "r1231",
      "r1232",
      "r1233",
      "r1234",
      "r1235",
      "r1236",
      "r1237",
      "r1238",
      "r1239",
      "r1240",
      "r1241",
      "r1242",
      "r1243",
      "r1244",
      "r1245",
      "r1246",
      "r1247",
      "r1248",
      "r1249",
      "r1250",
      "r1251",
      "r1252",
      "r1253",
      "r1254",
      "r1255",
      "r1256",
      "r1257",
      "r1258",
      "r1259",
      "r1260",
      "r1261",
      "r1262",
      "r1263",
      "r1264",
      "r1265",
      "r1266",
      "r1267",
      "r1268",
      "r1269",
      "r1270",
      "r1271",
      "r1272",
      "r1273",
      "r1274",
      "r1276",
      "r1277",
      "r1278",
      "r1279",
      "r1280",
      "r1281",
      "r1282",
      "r1283",
      "r1284",
      "r1285"
     ]
    },
    "us-gaap_RetirementPlanNameDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "RetirementPlanNameDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDeferredCompensationPlansDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDirectorPensionPlanDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeePensionPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retirement Plan Name [Domain]",
        "terseLabel": "Retirement Plan Name [Domain]",
        "documentation": "Name of plan designed to provide retirement benefits. Includes, but is not limited to, legal name of defined benefit and defined contribution plans."
       }
      }
     },
     "auth_ref": [
      "r404",
      "r405",
      "r406",
      "r407",
      "r408",
      "r409",
      "r410",
      "r411",
      "r412",
      "r915",
      "r1088",
      "r1225",
      "r1226",
      "r1227",
      "r1228",
      "r1229",
      "r1230",
      "r1231",
      "r1232",
      "r1233",
      "r1234",
      "r1235",
      "r1236",
      "r1237",
      "r1238",
      "r1239",
      "r1240",
      "r1241",
      "r1242",
      "r1243",
      "r1244",
      "r1245",
      "r1246",
      "r1247",
      "r1248",
      "r1249",
      "r1250",
      "r1251",
      "r1252",
      "r1253",
      "r1254",
      "r1255",
      "r1256",
      "r1257",
      "r1258",
      "r1259",
      "r1260",
      "r1261",
      "r1262",
      "r1263",
      "r1264",
      "r1265",
      "r1266",
      "r1267",
      "r1268",
      "r1269",
      "r1270",
      "r1271",
      "r1272",
      "r1273",
      "r1274",
      "r1276",
      "r1277",
      "r1278",
      "r1279",
      "r1280",
      "r1281",
      "r1282",
      "r1283",
      "r1284",
      "r1285"
     ]
    },
    "nbbk_ReversalAmountOfInterestIncomeForLoansOnNonAccrual": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "ReversalAmountOfInterestIncomeForLoansOnNonAccrual",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to reversal amount of interest income for loans on non accrual.",
        "label": "Reversal Amount of Interest Income For Loans On Non Accrual",
        "terseLabel": "Reversal of interest income"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_RiskBasedRatiosAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "RiskBasedRatiosAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Risk-Based Information [Abstract]",
        "terseLabel": "Total Capital (to Risk-Weighted Assets)"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_RiskParticipationAgreementsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "RiskParticipationAgreementsMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesDerivativeInstrumentsOnBalanceSheetDetails",
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesNumberOfPositionsAndTotalNotionalAmountOfNonDesignatedHedgesAndRpasDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the information pertaining to Risk Participation Agreements.",
        "label": "Risk Participation Agreements [Member]",
        "terseLabel": "RPA credit contracts"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_Rule10b51ArrAdoptedFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "Rule10b51ArrAdoptedFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Rule 10b5-1 Arrangement Adopted [Flag]",
        "terseLabel": "Rule 10b5-1 Arrangement Adopted"
       }
      }
     },
     "auth_ref": [
      "r1073"
     ]
    },
    "ecd_Rule10b51ArrTrmntdFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "Rule10b51ArrTrmntdFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Rule 10b5-1 Arrangement Terminated [Flag]",
        "terseLabel": "Rule 10b5-1 Arrangement Terminated"
       }
      }
     },
     "auth_ref": [
      "r1073"
     ]
    },
    "us-gaap_SaleOfStockConsiderationReceivedOnTransaction": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "SaleOfStockConsiderationReceivedOnTransaction",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Sale of Stock, Consideration Received on Transaction",
        "terseLabel": "Net proceeds received upon conversion",
        "documentation": "Cash received on stock transaction after deduction of issuance costs."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_SaleOfStockNameOfTransactionDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "SaleOfStockNameOfTransactionDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Sale of Stock [Domain]",
        "documentation": "Sale of the entity's stock, including, but not limited to, initial public offering (IPO) and private placement."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfAccountsNotesLoansAndFinancingReceivableTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityCollateralDependentLoansDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansModifiedToBorrowersExperiencingFinancialDifficultyDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Accounts, Notes, Loans and Financing Receivable [Table]",
        "documentation": "Disclosure of information about accounts and financing receivables. Includes, but is not limited to, amount of receivable and allowance for credit loss."
       }
      }
     },
     "auth_ref": [
      "r48",
      "r54",
      "r239",
      "r1152"
     ]
    },
    "us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]",
        "terseLabel": "Schedule of Loans",
        "documentation": "Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables."
       }
      }
     },
     "auth_ref": [
      "r48",
      "r54"
     ]
    },
    "us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureOtherComprehensiveIncomeTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]",
        "terseLabel": "Schedule of components of accumulated other comprehensive income",
        "documentation": "Tabular disclosure of the components of accumulated other comprehensive income (loss)."
       }
      }
     },
     "auth_ref": [
      "r18",
      "r1361",
      "r1362"
     ]
    },
    "us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]",
        "documentation": "Disclosure of information about acquired finite-lived intangible asset by major class."
       }
      }
     },
     "auth_ref": [
      "r321",
      "r322",
      "r323",
      "r325",
      "r753",
      "r852"
     ]
    },
    "us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]",
        "terseLabel": "Schedule of carrying amount of other intangible assets, net of accumulated amortization",
        "documentation": "Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company."
       }
      }
     },
     "auth_ref": [
      "r1204",
      "r1208"
     ]
    },
    "nbbk_ScheduleOfAnalysisOfChangeInAllowanceForLoanLossesByLoanTypeTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "ScheduleOfAnalysisOfChangeInAllowanceForLoanLossesByLoanTypeTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The tabular disclosure of analysis of the change in the allowance for loan losses by loan type.",
        "label": "Schedule of Analysis of Change in Allowance For Loan Losses by Loan Type [Table Text Block]",
        "terseLabel": "Schedule of analysis of the change in the allowance for loan losses by loan type"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfAvailableForSaleSecuritiesLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities, Available-for-Sale [Line Items]",
        "terseLabel": "Securities",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r248",
      "r249",
      "r250",
      "r251",
      "r252",
      "r253",
      "r254",
      "r256",
      "r257",
      "r258",
      "r259",
      "r260"
     ]
    },
    "us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]",
        "terseLabel": "Schedule of amortized cost and estimated fair values of securities classified as Available-for-Sale",
        "documentation": "Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfBusinessAcquisitionsByAcquisitionTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationAcquisitionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Business Acquisitions, by Acquisition [Table]",
        "documentation": "Disclosure of information about business combination. Includes, but is not limited to, recognized asset and liability."
       }
      }
     },
     "auth_ref": [
      "r317",
      "r474",
      "r475",
      "r476",
      "r477",
      "r483",
      "r484",
      "r485",
      "r486",
      "r492",
      "r493",
      "r494",
      "r495",
      "r496",
      "r497",
      "r498",
      "r499",
      "r500",
      "r501",
      "r502",
      "r503",
      "r504",
      "r505",
      "r506",
      "r507",
      "r508",
      "r509",
      "r510",
      "r511",
      "r512",
      "r513",
      "r514",
      "r515",
      "r521",
      "r522",
      "r523",
      "r526",
      "r920",
      "r925",
      "r1318",
      "r1320",
      "r1321"
     ]
    },
    "nbbk_ScheduleOfCollateralDependentLoansTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "ScheduleOfCollateralDependentLoansTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure collateral-dependent loans.",
        "label": "Schedule of Collateral Dependent Loans [Table Text Block]",
        "terseLabel": "Schedule of amortized cost of collateral-dependent loans"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share-Based Payment Arrangement, Cost by Plan [Table Text Block]",
        "terseLabel": "Schedule of compensation expense and income tax benefits recognized for restricted stock awards",
        "documentation": "Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit."
       }
      }
     },
     "auth_ref": [
      "r36"
     ]
    },
    "us-gaap_ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Regulatory Capital Requirement, Compliance [Table]",
        "documentation": "Disclosure of information about compliance with regulatory capital requirement. Includes, but is not limited to, required and actual ratios and amount of regulatory capital."
       }
      }
     },
     "auth_ref": [
      "r1377",
      "r1378"
     ]
    },
    "us-gaap_ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]",
        "terseLabel": "Schedule of actual capital amounts and ratios",
        "documentation": "Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity."
       }
      }
     },
     "auth_ref": [
      "r720",
      "r724"
     ]
    },
    "nbbk_ScheduleOfConsumerLoanPoolsTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "ScheduleOfConsumerLoanPoolsTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of consumer loan pools, shown net of premium (discount).",
        "label": "Schedule of Consumer Loan Pools [Table Text Block]",
        "terseLabel": "Schedule of outstanding balances of consumer loan pools, shown net of premium (discount)"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfDefinedBenefitPlansDisclosuresTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsDirectorPensionPlanDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeePensionPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Defined Benefit Plans Disclosures [Table]",
        "documentation": "Disclosure of information about individual defined benefit pension plan or other postretirement defined benefit plan. It may be appropriate to group certain similar plans. Also includes schedule for fair value of plan assets by major categories of plan assets by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), Significant other observable inputs (Level 2), and significant unobservable inputs (Level 3)."
       }
      }
     },
     "auth_ref": [
      "r12",
      "r32",
      "r33",
      "r34",
      "r35",
      "r379",
      "r380",
      "r381",
      "r384",
      "r386",
      "r387",
      "r388",
      "r389",
      "r390",
      "r391",
      "r392",
      "r393",
      "r394",
      "r395",
      "r396",
      "r397",
      "r398",
      "r399",
      "r401"
     ]
    },
    "us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]",
        "terseLabel": "Schedule of fair values of derivative instruments on the balance sheet",
        "documentation": "Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position."
       }
      }
     },
     "auth_ref": [
      "r548",
      "r551",
      "r573",
      "r960"
     ]
    },
    "us-gaap_ScheduleOfDerivativeInstrumentsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfDerivativeInstrumentsTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Derivative Instruments [Table Text Block]",
        "terseLabel": "Schedule of derivative positions at the dates indicated below for interest rate swaps",
        "documentation": "Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]",
        "terseLabel": "Schedule of Earnings per share",
        "documentation": "Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations."
       }
      }
     },
     "auth_ref": [
      "r1140"
     ]
    },
    "us-gaap_ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsEmployeeStockOwnershipPlanDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Employee Stock Ownership Plan (ESOP) Disclosures [Table]",
        "documentation": "Disclosure of information about employee stock ownership plan (ESOP) by plan."
       }
      }
     },
     "auth_ref": [
      "r1315"
     ]
    },
    "us-gaap_ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Ownership Plan (ESOP) Disclosures [Table Text Block]",
        "terseLabel": "Schedule of share information held by the ESOP",
        "documentation": "Tabular disclosure of the details pertaining to each employee stock ownership plan."
       }
      }
     },
     "auth_ref": [
      "r917",
      "r918",
      "r1315"
     ]
    },
    "us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]",
        "terseLabel": "Summary of assets measured and reported at estimated fair value on a recurring basis",
        "documentation": "Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3)."
       }
      }
     },
     "auth_ref": [
      "r1339",
      "r1340"
     ]
    },
    "us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfFairValueOffBalanceSheetRisksTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Fair Value, off-Balance-Sheet Risks [Table Text Block]",
        "terseLabel": "Schedule of financial instruments whose contract amounts represents off-balance sheet credit risk",
        "documentation": "Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined) which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition."
       }
      }
     },
     "auth_ref": [
      "r1354",
      "r1355",
      "r1379"
     ]
    },
    "us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfFinancingReceivableAllowanceForCreditLossesTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityChangeInAclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Allowance for Credit Loss [Table]",
        "documentation": "Disclosure of information about allowance for credit loss on financing receivable."
       }
      }
     },
     "auth_ref": [
      "r135",
      "r286",
      "r287",
      "r288",
      "r289",
      "r290",
      "r291"
     ]
    },
    "us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Credit Quality Indicator [Table]",
        "documentation": "Disclosure of information about credit quality indicator for financing receivable."
       }
      }
     },
     "auth_ref": [
      "r109",
      "r879",
      "r880",
      "r881",
      "r882",
      "r883",
      "r884",
      "r885",
      "r886",
      "r887",
      "r888",
      "r889",
      "r890",
      "r891",
      "r892",
      "r893",
      "r894",
      "r895",
      "r896",
      "r897",
      "r898",
      "r1183",
      "r1186"
     ]
    },
    "us-gaap_ScheduleOfFinancingReceivablesNonAccrualStatusTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfFinancingReceivablesNonAccrualStatusTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Nonaccrual [Table Text Block]",
        "terseLabel": "Schedule of amortized cost of nonaccrual loans receivable by loan category",
        "documentation": "Tabular disclosure of financing receivable on nonaccrual status."
       }
      }
     },
     "auth_ref": [
      "r293"
     ]
    },
    "us-gaap_ScheduleOfFinancingReceivablesPastDueTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfFinancingReceivablesPastDueTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityAgingOfAmortizedCostOfLoansReceivablesDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityNonaccrualLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivable, Past Due [Table]",
        "documentation": "Disclosure of information about aging analysis for financing receivable."
       }
      }
     },
     "auth_ref": [
      "r879",
      "r880",
      "r881",
      "r882",
      "r883",
      "r884",
      "r885",
      "r886",
      "r887",
      "r888",
      "r889",
      "r890",
      "r891",
      "r892",
      "r893",
      "r899",
      "r1182"
     ]
    },
    "us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfFiniteLivedIntangibleAssetsTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Intangible Asset, Finite-Lived [Table]",
        "documentation": "Disclosure of information about finite-lived intangible asset. Excludes indefinite-lived intangible asset."
       }
      }
     },
     "auth_ref": [
      "r319",
      "r326",
      "r329",
      "r330",
      "r331",
      "r695",
      "r852",
      "r854",
      "r926",
      "r927",
      "r928",
      "r929",
      "r930",
      "r931",
      "r932",
      "r933",
      "r934",
      "r935",
      "r936",
      "r937",
      "r938",
      "r939",
      "r940",
      "r941",
      "r942",
      "r943",
      "r944",
      "r945",
      "r946",
      "r947",
      "r948",
      "r949",
      "r950",
      "r951",
      "r952"
     ]
    },
    "us-gaap_ScheduleOfGoodwillTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfGoodwillTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Goodwill [Table Text Block]",
        "terseLabel": "Schedule of changes in the carrying value of goodwill",
        "documentation": "Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule."
       }
      }
     },
     "auth_ref": [
      "r901",
      "r1191",
      "r1192",
      "r1193",
      "r1194",
      "r1195",
      "r1196",
      "r1197",
      "r1198",
      "r1199",
      "r1200",
      "r1201"
     ]
    },
    "us-gaap_ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Intangible Assets and Goodwill [Table Text Block]",
        "terseLabel": "Schedule of carrying amount of goodwill and other intangible assets, net of accumulated amortization",
        "documentation": "Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class."
       }
      }
     },
     "auth_ref": [
      "r1190",
      "r1202"
     ]
    },
    "us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]",
        "terseLabel": "Schedule of restricted stock award activities",
        "documentation": "Tabular disclosure of the changes in outstanding nonvested restricted stock units."
       }
      }
     },
     "auth_ref": [
      "r73"
     ]
    },
    "us-gaap_ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivatives Not Designated as Hedging Instruments [Table Text Block]",
        "terseLabel": "Schedule of number of position and total number of non-designated hedges and RPAs",
        "documentation": "Tabular disclosure of derivative instrument not designated or qualifying as hedging instrument."
       }
      }
     },
     "auth_ref": [
      "r1325",
      "r1327",
      "r1329",
      "r1331"
     ]
    },
    "us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsRestrictedStockAwardActivitiesDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsScheduleOfCompensationExpenseDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]",
        "documentation": "Disclosure of information about share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r413",
      "r415",
      "r416",
      "r417",
      "r418",
      "r419",
      "r420",
      "r421",
      "r422",
      "r423",
      "r424",
      "r425",
      "r426",
      "r427",
      "r428",
      "r429",
      "r430",
      "r431",
      "r432",
      "r433",
      "r434",
      "r435",
      "r436",
      "r437",
      "r438",
      "r439",
      "r440",
      "r441",
      "r442",
      "r445"
     ]
    },
    "us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureGoodwillAndOtherIntangibleAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]",
        "terseLabel": "Schedule of estimated amortization expense for the remaining useful life of the other intangible assets",
        "documentation": "Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets."
       }
      }
     },
     "auth_ref": [
      "r854",
      "r1210"
     ]
    },
    "dei_Security12bTitle": {
     "xbrltype": "securityTitleItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "Security12bTitle",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Title of 12(b) Security",
        "documentation": "Title of a 12(b) registered security."
       }
      }
     },
     "auth_ref": [
      "r998"
     ]
    },
    "dei_SecurityExchangeName": {
     "xbrltype": "edgarExchangeCodeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "SecurityExchangeName",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Security Exchange Name",
        "documentation": "Name of the Exchange on which a security is registered."
       }
      }
     },
     "auth_ref": [
      "r1000"
     ]
    },
    "us-gaap_ShareBasedCompensation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ShareBasedCompensation",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0,
       "order": 14.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share-Based Payment Arrangement, Noncash Expense",
        "terseLabel": "Stock-based compensation",
        "documentation": "Amount of noncash expense for share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r9"
     ]
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsRestrictedStockAwardActivitiesDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period",
        "terseLabel": "Granted, shares",
        "documentation": "The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan)."
       }
      }
     },
     "auth_ref": [
      "r430"
     ]
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsRestrictedStockAwardActivitiesDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value",
        "terseLabel": "Granted, Weighted-average grant date fair value per share",
        "documentation": "The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan)."
       }
      }
     },
     "auth_ref": [
      "r430"
     ]
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsRestrictedStockAwardActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number",
        "periodEndLabel": "Non-vested balance at end of period, shares",
        "periodStartLabel": "Non-vested balance at beginning of period, shares",
        "documentation": "The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date."
       }
      }
     },
     "auth_ref": [
      "r427",
      "r428"
     ]
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsRestrictedStockAwardActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value",
        "periodEndLabel": "Non-vested balance at end of period, Weighted-average grant date fair value per share",
        "periodStartLabel": "Non-vested balance at beginning of period, Weighted-average grant date fair value per share",
        "documentation": "Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options."
       }
      }
     },
     "auth_ref": [
      "r427",
      "r428"
     ]
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsRestrictedStockAwardActivitiesDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsScheduleOfCompensationExpenseDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]",
        "terseLabel": "Employee Benefits",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r413",
      "r415",
      "r416",
      "r417",
      "r418",
      "r419",
      "r420",
      "r421",
      "r422",
      "r423",
      "r424",
      "r425",
      "r426",
      "r427",
      "r428",
      "r429",
      "r430",
      "r431",
      "r432",
      "r433",
      "r434",
      "r435",
      "r436",
      "r437",
      "r438",
      "r439",
      "r440",
      "r441",
      "r442",
      "r445"
     ]
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized",
        "terseLabel": "Issuance of shares",
        "documentation": "Number of shares authorized for issuance under share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r916"
     ]
    },
    "nbbk_ShareBasedCompensationArrangementByShareBasedPaymentAwardReductionOfSharesAvailableToBeIssuedUponExerciseOfStockOptionsWithEachAdditionalRestrictedStockGrant": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardReductionOfSharesAvailableToBeIssuedUponExerciseOfStockOptionsWithEachAdditionalRestrictedStockGrant",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The reduction in number of shares available to be issued upon the exercise of stock options with grant of each additional award of restricted stock or RSUs above the mentioned limit.",
        "label": "Share Based Compensation Arrangement by Share Based Payment Award, Reduction of Shares Available to be Issued Upon Exercise of Stock Options With Each Additional Restricted Stock Grant",
        "terseLabel": "RSU awards"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsRestrictedStockAwardActivitiesDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsScheduleOfCompensationExpenseDetails",
      "http://www.needhambank.com/role/DisclosureEmployeeBenefitsStockBasedCompensationDetails",
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Award Types",
        "terseLabel": "All Award Types",
        "documentation": "Award under share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r416",
      "r417",
      "r418",
      "r419",
      "r420",
      "r421",
      "r422",
      "r423",
      "r424",
      "r425",
      "r426",
      "r427",
      "r428",
      "r429",
      "r430",
      "r431",
      "r432",
      "r433",
      "r434",
      "r435",
      "r436",
      "r438",
      "r439",
      "r440",
      "r441",
      "r442"
     ]
    },
    "nbbk_ShareBasedPaymentArrangementAwardsGrantedValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "ShareBasedPaymentArrangementAwardsGrantedValue",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of awards granted as part of non-cash transaction under share-based payment transactions during the year.",
        "label": "Share Based Payment Arrangement, Awards Granted Value",
        "terseLabel": "Restricted stock awards granted"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_SharesIssuedPricePerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "SharesIssuedPricePerShare",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Shares Issued, Price Per Share",
        "verboseLabel": "Share price",
        "documentation": "Per share or per unit amount of equity securities issued."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_SharesOutstanding": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "SharesOutstanding",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Shares, Outstanding",
        "periodEndLabel": "Balance at the end (in shares)",
        "periodStartLabel": "Balance at the beginning (in shares)",
        "documentation": "Number of shares issued which are neither cancelled nor held in the treasury."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_SignificantAccountingPoliciesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "SignificantAccountingPoliciesTextBlock",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSummaryOfSignificantAccountingPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Significant Accounting Policies [Text Block]",
        "terseLabel": "Summary of Significant Accounting Policies",
        "documentation": "The entire disclosure for all significant accounting policies of the reporting entity."
       }
      }
     },
     "auth_ref": [
      "r190",
      "r191"
     ]
    },
    "nbbk_SmallBusinessAdministrationSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "SmallBusinessAdministrationSecuritiesMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to small business administration (SBA)securities.",
        "label": "Small Business Administration Securities [Member]",
        "terseLabel": "SBA securities"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_SolarPanelLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "SolarPanelLoansMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information relating to Solar panel loans.",
        "label": "Solar Panel Loans [Member]",
        "terseLabel": "Solar panel loans"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_SpecialMentionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "SpecialMentionMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Special Mention [Member]",
        "terseLabel": "Special Mention",
        "documentation": "A category of financing receivables considered to have potential weaknesses that deserve management's close attention. If left uncorrected, those potential weaknesses may result in a deterioration of the repayment prospects for the asset or of the creditor's position at some future date."
       }
      }
     },
     "auth_ref": [
      "r108",
      "r109",
      "r110",
      "r1184",
      "r1185"
     ]
    },
    "us-gaap_StandbyLettersOfCreditMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StandbyLettersOfCreditMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails",
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesScheduleOfContractAmountsRepresentsOffBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Standby Letters of Credit [Member]",
        "terseLabel": "Standby letters",
        "verboseLabel": "Letter of credit",
        "documentation": "An irrevocable undertaking (typically by a financial institution) to guarantee payment of a specified financial obligation."
       }
      }
     },
     "auth_ref": [
      "r0",
      "r1218",
      "r1383",
      "r1384"
     ]
    },
    "us-gaap_StateAndLocalJurisdictionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StateAndLocalJurisdictionMember",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "State and Local Jurisdiction [Member]",
        "terseLabel": "State",
        "documentation": "Designated state or local jurisdiction entitled to levy and collect income tax."
       }
      }
     },
     "auth_ref": [
      "r457"
     ]
    },
    "us-gaap_StateAndLocalTaxJurisdictionOtherMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StateAndLocalTaxJurisdictionOtherMember",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "State and Local Tax Jurisdiction, Other [Member]",
        "terseLabel": "Jurisdictions below 5 percent of total income taxes paid, net of refunds",
        "documentation": "Designated state and local jurisdiction entitled to levy and collect income tax in country of domicile, classified as other."
       }
      }
     },
     "auth_ref": [
      "r1130",
      "r1316"
     ]
    },
    "us-gaap_StatementEquityComponentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StatementEquityComponentsAxis",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Components [Axis]",
        "terseLabel": "Equity Components [Axis]",
        "documentation": "Information by component of equity."
       }
      }
     },
     "auth_ref": [
      "r14",
      "r47",
      "r51",
      "r52",
      "r148",
      "r149",
      "r150",
      "r172",
      "r173",
      "r174",
      "r199",
      "r200",
      "r201",
      "r203",
      "r210",
      "r212",
      "r214",
      "r228",
      "r281",
      "r282",
      "r332",
      "r355",
      "r368",
      "r446",
      "r462",
      "r463",
      "r467",
      "r468",
      "r469",
      "r471",
      "r527",
      "r528",
      "r598",
      "r599",
      "r600",
      "r601",
      "r602",
      "r603",
      "r604",
      "r605",
      "r606",
      "r607",
      "r609",
      "r648",
      "r650",
      "r651",
      "r652",
      "r653",
      "r654",
      "r656",
      "r657",
      "r659",
      "r738",
      "r746",
      "r747",
      "r748",
      "r761",
      "r820"
     ]
    },
    "us-gaap_StatementLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StatementLineItems",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement [Line Items]",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r199",
      "r200",
      "r201",
      "r228",
      "r357",
      "r358",
      "r360",
      "r362",
      "r657",
      "r694",
      "r756",
      "r762",
      "r763",
      "r776",
      "r778",
      "r779",
      "r780",
      "r781",
      "r782",
      "r784",
      "r787",
      "r788",
      "r789",
      "r790",
      "r791",
      "r792",
      "r793",
      "r794",
      "r795",
      "r797",
      "r798",
      "r799",
      "r800",
      "r801",
      "r804",
      "r805",
      "r806",
      "r807",
      "r808",
      "r809",
      "r810",
      "r811",
      "r812",
      "r813",
      "r814",
      "r815",
      "r816",
      "r817",
      "r820",
      "r864",
      "r866",
      "r984",
      "r1388"
     ]
    },
    "us-gaap_StatementOfCashFlowsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StatementOfCashFlowsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidated Statements of Cash Flows"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_StatementOfFinancialPositionAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StatementOfFinancialPositionAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidated Balance Sheets"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StatementOfIncomeAndComprehensiveIncomeAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidated Statements of Comprehensive Income"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_StatementOfStockholdersEquityAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StatementOfStockholdersEquityAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidated Statements of Changes in Shareholders' Equity"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_StatementTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StatementTable",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement [Table]",
        "documentation": "Presentation of information about comprehensive income, income, other comprehensive income, financial position, cash flows, and shareholders' equity."
       }
      }
     },
     "auth_ref": [
      "r199",
      "r200",
      "r201",
      "r228",
      "r238",
      "r357",
      "r358",
      "r360",
      "r362",
      "r657",
      "r694",
      "r756",
      "r762",
      "r763",
      "r776",
      "r778",
      "r779",
      "r780",
      "r781",
      "r782",
      "r784",
      "r787",
      "r788",
      "r789",
      "r790",
      "r791",
      "r792",
      "r793",
      "r794",
      "r795",
      "r797",
      "r798",
      "r799",
      "r800",
      "r801",
      "r804",
      "r805",
      "r806",
      "r807",
      "r808",
      "r809",
      "r810",
      "r811",
      "r812",
      "r813",
      "r814",
      "r815",
      "r816",
      "r817",
      "r820",
      "r864",
      "r866",
      "r984",
      "r1388"
     ]
    },
    "ecd_StkPrcOrTsrEstimationMethodTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "StkPrcOrTsrEstimationMethodTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Price or TSR Estimation Method [Text Block]",
        "terseLabel": "Stock Price or TSR Estimation Method"
       }
      }
     },
     "auth_ref": [
      "r1007",
      "r1017",
      "r1027",
      "r1059"
     ]
    },
    "us-gaap_StockAppreciationRightsSARSMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StockAppreciationRightsSARSMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Appreciation Rights (SARs) [Member]",
        "terseLabel": "Stock Appreciation Rights (SARs)",
        "documentation": "Right to receive cash or shares equal to appreciation of predetermined number of grantor's shares during predetermined time period."
       }
      }
     },
     "auth_ref": [
      "r1286",
      "r1287",
      "r1288",
      "r1289",
      "r1290",
      "r1291",
      "r1292",
      "r1293",
      "r1294",
      "r1295",
      "r1296",
      "r1297",
      "r1298",
      "r1299",
      "r1300",
      "r1301",
      "r1302",
      "r1303",
      "r1304",
      "r1305",
      "r1306",
      "r1307",
      "r1308",
      "r1309",
      "r1310",
      "r1311"
     ]
    },
    "nbbk_StockIssuedDuringPeriodIssuedCharitySharesNewIssues": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "StockIssuedDuringPeriodIssuedCharitySharesNewIssues",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of new stock issued during the period for charity.",
        "label": "Stock Issued During Period Issued Charity, Shares, New Issues",
        "terseLabel": "Issuance of common shares donated to Needham Bank Charitable Foundation (in shares)"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_StockIssuedDuringPeriodSharesNewIssues": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StockIssuedDuringPeriodSharesNewIssues",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Issued During Period, Shares, New Issues",
        "terseLabel": "Proceeds of stock offering and issuance of common shares (net of costs of $9,600) (in shares)",
        "verboseLabel": "Number of shares sold pursuant to the plan",
        "documentation": "Number of new stock issued during the period."
       }
      }
     },
     "auth_ref": [
      "r14",
      "r46",
      "r47",
      "r72",
      "r757",
      "r820",
      "r842"
     ]
    },
    "us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures",
        "terseLabel": "Restricted stock award issued (in shares)",
        "documentation": "Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited."
       }
      }
     },
     "auth_ref": [
      "r14",
      "r46",
      "r47",
      "r72"
     ]
    },
    "us-gaap_StockIssuedDuringPeriodValueNewIssues": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StockIssuedDuringPeriodValueNewIssues",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Issued During Period, Value, New Issues",
        "terseLabel": "Proceeds of stock offering and issuance of common shares (net of costs of $9,600)",
        "documentation": "Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering."
       }
      }
     },
     "auth_ref": [
      "r14",
      "r46",
      "r47",
      "r72",
      "r761",
      "r820",
      "r842",
      "r992"
     ]
    },
    "us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures",
        "terseLabel": "Restricted stock award issued",
        "documentation": "Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited."
       }
      }
     },
     "auth_ref": [
      "r14",
      "r72"
     ]
    },
    "us-gaap_StockRepurchasedDuringPeriodShares": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StockRepurchasedDuringPeriodShares",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Repurchased During Period, Shares",
        "negatedLabel": "Repurchase of common shares under share repurchase plan (in shares)",
        "documentation": "Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock."
       }
      }
     },
     "auth_ref": [
      "r14",
      "r46",
      "r47",
      "r72",
      "r758",
      "r820",
      "r843"
     ]
    },
    "us-gaap_StockRepurchasedDuringPeriodValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StockRepurchasedDuringPeriodValue",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Repurchased During Period, Value",
        "negatedLabel": "Repurchase of common shares under share repurchase plan",
        "documentation": "Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock."
       }
      }
     },
     "auth_ref": [
      "r14",
      "r46",
      "r47",
      "r72",
      "r761",
      "r820",
      "r843",
      "r992"
     ]
    },
    "us-gaap_StockholdersEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StockholdersEquity",
     "crdr": "credit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity, Attributable to Parent",
        "periodEndLabel": "Balance at the end",
        "periodStartLabel": "Balance at the beginning",
        "totalLabel": "Total shareholders' equity",
        "documentation": "Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest."
       }
      }
     },
     "auth_ref": [
      "r47",
      "r51",
      "r52",
      "r70",
      "r786",
      "r802",
      "r821",
      "r822",
      "r975",
      "r993",
      "r1131",
      "r1133",
      "r1134",
      "r1171",
      "r1360",
      "r1390"
     ]
    },
    "us-gaap_StockholdersEquityAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StockholdersEquityAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity, Attributable to Parent [Abstract]",
        "terseLabel": "Shareholders' equity:"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_StudentLoanMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StudentLoanMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityConsumerLoanPoolsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Student Loan [Member]",
        "terseLabel": "Student loans",
        "documentation": "Loan to finance tuition costs."
       }
      }
     },
     "auth_ref": [
      "r1149"
     ]
    },
    "us-gaap_SubsidiarySaleOfStockAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "SubsidiarySaleOfStockAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCorporateStructureAndNatureOfOperationsBasisOfPresentationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Sale of Stock [Axis]",
        "documentation": "Information by type of sale of the entity's stock."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_SubstandardMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "SubstandardMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Substandard [Member]",
        "terseLabel": "Substandard",
        "documentation": "A category of financing receivables that are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the creditor will sustain some loss if the deficiencies are not corrected."
       }
      }
     },
     "auth_ref": [
      "r108",
      "r109",
      "r110",
      "r1184",
      "r1185"
     ]
    },
    "us-gaap_SupplementalCashFlowInformationAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "SupplementalCashFlowInformationAbstract",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplemental Cash Flow Information [Abstract]",
        "terseLabel": "Supplemental disclosure of cash paid during the period for:"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_SwapContractFeesNetOfBrokerageCosts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "SwapContractFeesNetOfBrokerageCosts",
     "crdr": "debit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureDerivativesAndHedgingActivitiesConsolidatedStatementsOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of swap contract fees, net of brokerage costs.",
        "label": "Swap Contract Fees, Net of Brokerage Costs",
        "terseLabel": "Swap contract fees, net of brokerage costs"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_TabularListTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TabularListTableTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tabular List [Table Text Block]",
        "terseLabel": "Tabular List, Table"
       }
      }
     },
     "auth_ref": [
      "r1053"
     ]
    },
    "us-gaap_TierOneLeverageCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TierOneLeverageCapital",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Tier 1 Leverage Capital, Actual",
        "terseLabel": "Tier I Capital (to Total Average Assets), Actual Amount",
        "documentation": "Amount of Tier 1 leverage capital as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TierOneLeverageCapitalRequiredForCapitalAdequacy",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum",
        "terseLabel": "Tier I Capital (to Total Average Assets), For minimum capital adequacy purposes, Amount",
        "documentation": "Amount of minimum Tier 1 leverage capital required for capital adequacy as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720",
      "r724"
     ]
    },
    "us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets": {
     "xbrltype": "pureItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum",
        "terseLabel": "Tier I Capital (to Total Average Assets), For minimum capital adequacy purposes, Ratio",
        "documentation": "Ratio of minimum Tier 1 leverage capital to average assets required for capital adequacy as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720",
      "r724"
     ]
    },
    "us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalized": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TierOneLeverageCapitalRequiredToBeWellCapitalized",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Tier 1 Leverage Capital, Well Capitalized, Minimum",
        "terseLabel": "Tier I Capital (to Total Average Assets), To be well capitalized under prompt corrective action provisions, Amount",
        "documentation": "Amount of minimum Tier 1 leverage capital categorized as well capitalized as defined by regulatory framework for prompt corrective action."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets": {
     "xbrltype": "pureItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum",
        "terseLabel": "Tier I Capital (to Total Average Assets), To be well capitalized under prompt corrective action provisions, Ratio",
        "documentation": "Ratio of minimum Tier 1 leverage capital to average assets categorized as well capitalized as defined by regulatory framework for prompt corrective action."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_TierOneLeverageCapitalToAverageAssets": {
     "xbrltype": "pureItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TierOneLeverageCapitalToAverageAssets",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Tier 1 Leverage Capital Ratio, Actual",
        "terseLabel": "Tier I Capital (to Total Average Assets), Actual Ratio",
        "documentation": "Ratio of Tier 1 capital to average assets as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_TierOneRiskBasedCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TierOneRiskBasedCapital",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Tier 1 Risk-Based Capital, Actual",
        "terseLabel": "Tier I Capital (to Risk-Weighted Assets), Actual Amount",
        "documentation": "Amount of Tier 1 risk-based capital as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_TierOneRiskBasedCapitalAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TierOneRiskBasedCapitalAbstract",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Tier 1 Risk-Based Capital [Abstract]",
        "terseLabel": "Tier I Capital (to Risk-Weighted Assets)"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TierOneRiskBasedCapitalRequiredForCapitalAdequacy",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy, Minimum",
        "terseLabel": "Tier I Capital (to Risk-Weighted Assets), For minimum capital adequacy purposes, Amount",
        "documentation": "Amount of minimum Tier 1 risk-based capital required for capital adequacy as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720",
      "r724"
     ]
    },
    "us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets": {
     "xbrltype": "pureItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum",
        "terseLabel": "Tier I Capital (to Risk-Weighted Assets), For minimum capital adequacy purposes, Ratio",
        "documentation": "Ratio of minimum Tier 1 risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720",
      "r724"
     ]
    },
    "us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalized": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TierOneRiskBasedCapitalRequiredToBeWellCapitalized",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Tier 1 Risk-Based Capital, Well Capitalized, Minimum",
        "terseLabel": "Tier I Capital (to Risk-Weighted Assets), To be well capitalized under prompt corrective action provisions, Amount",
        "documentation": "Amount of minimum Tier 1 risk-based capital categorized as well capitalized as defined by regulatory framework for prompt corrective action."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets": {
     "xbrltype": "pureItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum",
        "terseLabel": "Tier I Capital (to Risk-Weighted Assets), To be well capitalized under prompt corrective action provisions, Ratio",
        "documentation": "Ratio of minimum Tier 1 risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets": {
     "xbrltype": "pureItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TierOneRiskBasedCapitalToRiskWeightedAssets",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual",
        "terseLabel": "Tier I Capital (to Risk-Weighted Assets), Actual Ratio",
        "documentation": "Ratio of Tier 1 risk-based capital to risk-weighted assets as defined by regulatory framework."
       }
      }
     },
     "auth_ref": [
      "r720"
     ]
    },
    "nbbk_TimeDepositsFairValueDisclosure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "TimeDepositsFairValueDisclosure",
     "crdr": "credit",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsEstimatedFairValuesRelatedCarryingAmountsAndValuationLevelOfFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fair value portion of time deposits.",
        "label": "Time Deposits, Fair Value Disclosure",
        "terseLabel": "Time deposits"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_TotalShareholderRtnAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TotalShareholderRtnAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total Shareholder Return Amount",
        "terseLabel": "Total Shareholder Return Amount"
       }
      }
     },
     "auth_ref": [
      "r1045"
     ]
    },
    "ecd_TotalShareholderRtnVsPeerGroupTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TotalShareholderRtnVsPeerGroupTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total Shareholder Return Vs Peer Group [Text Block]",
        "terseLabel": "Total Shareholder Return Vs Peer Group"
       }
      }
     },
     "auth_ref": [
      "r1052"
     ]
    },
    "ecd_TradingArrAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TradingArrAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement [Axis]",
        "terseLabel": "Trading Arrangement:"
       }
      }
     },
     "auth_ref": [
      "r1072"
     ]
    },
    "ecd_TradingArrByIndTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TradingArrByIndTable",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangements, by Individual [Table]",
        "terseLabel": "Trading Arrangements, by Individual"
       }
      }
     },
     "auth_ref": [
      "r1074"
     ]
    },
    "dei_TradingSymbol": {
     "xbrltype": "tradingSymbolItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "TradingSymbol",
     "presentation": [
      "http://www.needhambank.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Symbol",
        "documentation": "Trading symbol of an instrument as listed on an exchange."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesScheduleOfContractAmountsRepresentsOffBalanceSheetDetails",
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesMaturitiesOfDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Instruments [Domain]",
        "documentation": "Instrument or contract that imposes a contractual obligation to deliver cash or another financial instrument or to exchange other financial instruments on potentially unfavorable terms and conveys a contractual right to receive cash or another financial instrument or to exchange other financial instruments on potentially favorable terms."
       }
      }
     },
     "auth_ref": [
      "r248",
      "r249",
      "r250",
      "r251",
      "r252",
      "r253",
      "r254",
      "r256",
      "r257",
      "r258",
      "r259",
      "r260",
      "r261",
      "r262",
      "r263",
      "r264",
      "r265",
      "r266",
      "r267",
      "r268",
      "r269",
      "r270",
      "r271",
      "r272",
      "r273",
      "r274",
      "r275",
      "r276",
      "r277",
      "r278",
      "r354",
      "r367",
      "r595",
      "r608",
      "r636",
      "r645",
      "r647",
      "r661",
      "r662",
      "r663",
      "r664",
      "r665",
      "r666",
      "r667",
      "r668",
      "r669",
      "r670",
      "r671",
      "r672",
      "r673",
      "r674",
      "r676",
      "r678",
      "r679",
      "r680",
      "r681",
      "r682",
      "r683",
      "r684",
      "r685",
      "r686",
      "r687",
      "r688",
      "r689",
      "r690",
      "r691",
      "r692",
      "r727",
      "r739",
      "r964",
      "r966",
      "r967",
      "r968",
      "r969",
      "r970",
      "r971",
      "r972",
      "r973",
      "r977",
      "r1090",
      "r1091",
      "r1092",
      "r1093",
      "r1094",
      "r1095",
      "r1096",
      "r1167",
      "r1168",
      "r1169",
      "r1170",
      "r1338",
      "r1341",
      "r1342",
      "r1343",
      "r1350",
      "r1353",
      "r1354",
      "r1356"
     ]
    },
    "ecd_TrdArrAdoptionDate": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrAdoptionDate",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement Adoption Date",
        "terseLabel": "Adoption Date"
       }
      }
     },
     "auth_ref": [
      "r1075"
     ]
    },
    "ecd_TrdArrDuration": {
     "xbrltype": "durationItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrDuration",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement Duration",
        "terseLabel": "Arrangement Duration"
       }
      }
     },
     "auth_ref": [
      "r1076"
     ]
    },
    "ecd_TrdArrExpirationDate": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrExpirationDate",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement Expiration Date",
        "terseLabel": "Expiration Date"
       }
      }
     },
     "auth_ref": [
      "r1076"
     ]
    },
    "ecd_TrdArrIndName": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrIndName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement, Individual Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r1074"
     ]
    },
    "ecd_TrdArrIndTitle": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrIndTitle",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement, Individual Title",
        "terseLabel": "Title"
       }
      }
     },
     "auth_ref": [
      "r1074"
     ]
    },
    "ecd_TrdArrSecuritiesAggAvailAmt": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrSecuritiesAggAvailAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement, Securities Aggregate Available Amount",
        "terseLabel": "Aggregate Available"
       }
      }
     },
     "auth_ref": [
      "r1077"
     ]
    },
    "ecd_TrdArrTerminationDate": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrTerminationDate",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement Termination Date",
        "terseLabel": "Termination Date"
       }
      }
     },
     "auth_ref": [
      "r1075"
     ]
    },
    "us-gaap_USGovernmentAgenciesDebtSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "USGovernmentAgenciesDebtSecuritiesMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "US Government Agencies Debt Securities [Member]",
        "terseLabel": "U.S. Government Agencies",
        "documentation": "Debentures, notes, and other debt securities issued by US government agencies, for example, but not limited to, Government National Mortgage Association (GNMA or Ginnie Mae). Excludes US treasury securities and debt issued by government-sponsored Enterprises (GSEs), for example, but is not limited to, Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB)."
       }
      }
     },
     "auth_ref": [
      "r867",
      "r868",
      "r907",
      "r909",
      "r1374"
     ]
    },
    "us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "USGovernmentCorporationsAndAgenciesSecuritiesMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "US Government Corporations and Agencies Securities [Member]",
        "terseLabel": "U.S. Government agencies",
        "documentation": "This category includes information about debt issued by US Government Corporations and Agencies. Investments in such US Government Corporations may include debt securities issued by the Government National Mortgage Association (Ginnie Mae) and by the Federal National Mortgage Association (Fannie Mae) and the Federal Home Loan Mortgage Corporation (Freddie Mac)."
       }
      }
     },
     "auth_ref": [
      "r1374"
     ]
    },
    "us-gaap_USTreasurySecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "USTreasurySecuritiesMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsAssetsMeasuredAndReportedAtEstimatedFairValueOnRecurringBasisDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesAmortizedCostToFairValueDetails",
      "http://www.needhambank.com/role/DisclosureSecuritiesFairValueAndGrossUnrealizedLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "US Treasury Securities [Member]",
        "terseLabel": "U.S. Treasury securities",
        "documentation": "This category includes information about debt securities issued by the United States Department of the Treasury and backed by the United States government. Such securities primarily consist of treasury bills (short-term maturities - one year or less), treasury notes (intermediate term maturities - two to ten years), and treasury bonds (long-term maturities - ten to thirty years)."
       }
      }
     },
     "auth_ref": [
      "r867",
      "r868",
      "r907",
      "r909",
      "r911",
      "r964",
      "r1374"
     ]
    },
    "nbbk_UnadvancedFundsOnConstructionLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "UnadvancedFundsOnConstructionLoansMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesScheduleOfContractAmountsRepresentsOffBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The unused portion of a construction loan that is available to the borrower to withdrawn upon.",
        "label": "Unadvanced Funds on Construction Loans [Member]",
        "terseLabel": "Unadvanced funds on construction loans"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_UnadvancedFundsOnMortgageWarehouseLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "UnadvancedFundsOnMortgageWarehouseLoansMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesScheduleOfContractAmountsRepresentsOffBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to unused portion of committed mortgage warehouse loan.",
        "label": "Unadvanced Funds On Mortgage Warehouse Loans [Member]",
        "terseLabel": "Unadvanced funds on mortgage warehouse loans"
       }
      }
     },
     "auth_ref": []
    },
    "nbbk_UnallocatedCommonSharesHeldByEsopMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.needhambank.com/20260331",
     "localname": "UnallocatedCommonSharesHeldByEsopMember",
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents unallocated common shares, held by ESOP.",
        "label": "Unallocated Common shares, Held By ESOP [Member]",
        "terseLabel": "Unallocated Common Stock Held by ESOP"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_UndrlygSecurityMktPriceChngPct": {
     "xbrltype": "pureItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "UndrlygSecurityMktPriceChngPct",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Underlying Security Market Price Change, Percent",
        "terseLabel": "Underlying Security Market Price Change"
       }
      }
     },
     "auth_ref": [
      "r1071"
     ]
    },
    "us-gaap_UnearnedESOPShares": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "UnearnedESOPShares",
     "crdr": "debit",
     "calculation": {
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets": {
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": -1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/StatementConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unearned ESOP Shares",
        "negatedLabel": "Unallocated common shares held by the Employee Stock Ownership Plan (\"ESOP\")",
        "documentation": "Fair value of unearned shares for all classes of common stock and nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by an employee stock ownership plan (ESOP). Includes the sale of shares or the issuance treasury shares to an ESOP."
       }
      }
     },
     "auth_ref": [
      "r449"
     ]
    },
    "us-gaap_UnfundedLoanCommitmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "UnfundedLoanCommitmentMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unfunded Loan Commitment [Member]",
        "verboseLabel": "Unfunded loan commitment",
        "documentation": "Undisbursed funds of a credit facility in which the borrower may draw upon."
       }
      }
     },
     "auth_ref": [
      "r1149"
     ]
    },
    "us-gaap_UnlikelyToBeCollectedFinancingReceivableMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "UnlikelyToBeCollectedFinancingReceivableMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureLoansReceivableAllowanceForCreditLossesAndCreditQualityLoansReceivableByInternalRiskGradeByYearOfOriginationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unlikely to be Collected Financing Receivable [Member]",
        "terseLabel": "Loss",
        "documentation": "Financing arrangement that represents a contractual right to receive money either on demand or on fixed or determinable dates that are considered uncollectible or of little value. Excludes no recovery or salvage value."
       }
      }
     },
     "auth_ref": [
      "r108",
      "r109",
      "r110",
      "r1184",
      "r1185"
     ]
    },
    "us-gaap_UnusedLinesOfCreditMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "UnusedLinesOfCreditMember",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureCommitmentsAndContingenciesScheduleOfContractAmountsRepresentsOffBalanceSheetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unused lines of Credit [Member]",
        "verboseLabel": "Unadvanced funds on lines of credit",
        "documentation": "The unused portion of a line of credit that is available to the borrower to withdrawn upon."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_UseOfEstimates": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "UseOfEstimates",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Use of Estimates, Policy [Policy Text Block]",
        "terseLabel": "Use of Estimates",
        "documentation": "Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles."
       }
      }
     },
     "auth_ref": [
      "r123",
      "r124",
      "r229",
      "r230",
      "r231",
      "r232",
      "r707",
      "r709",
      "r870"
     ]
    },
    "us-gaap_ValuationTechniqueAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ValuationTechniqueAxis",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Valuation Approach and Technique [Axis]",
        "documentation": "Information by valuation approach and technique."
       }
      }
     },
     "auth_ref": [
      "r616",
      "r617",
      "r920",
      "r925",
      "r967",
      "r1343"
     ]
    },
    "us-gaap_ValuationTechniqueDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ValuationTechniqueDomain",
     "presentation": [
      "http://www.needhambank.com/role/DisclosureFairValueMeasurementsSignificantUnobservableInputsUsedInFairValueMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Valuation Approach and Technique [Domain]",
        "documentation": "Valuation approach and technique."
       }
      }
     },
     "auth_ref": [
      "r616",
      "r617",
      "r920",
      "r925",
      "r967",
      "r1343"
     ]
    },
    "ecd_VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member]",
        "terseLabel": "Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year"
       }
      }
     },
     "auth_ref": [
      "r1041"
     ]
    },
    "us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "WeightedAverageNumberDilutedSharesOutstandingAdjustment",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails": {
       "parentTag": "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails",
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsNarrativesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted Average Number of Shares Outstanding, Diluted, Adjustment",
        "terseLabel": "Add: assumed conversion - unvested restricted stock awards",
        "verboseLabel": "Dilutive securities",
        "documentation": "The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation."
       }
      }
     },
     "auth_ref": [
      "r1140"
     ]
    },
    "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "WeightedAverageNumberOfDilutedSharesOutstanding",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted Average Number of Shares Outstanding, Diluted",
        "terseLabel": "Weighted average common shares outstanding, diluted",
        "totalLabel": "Average number of common shares outstanding used to calculate diluted EPS",
        "documentation": "The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period."
       }
      }
     },
     "auth_ref": [
      "r217",
      "r222"
     ]
    },
    "us-gaap_WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails": {
       "parentTag": "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted Average Number of Shares, Employee Stock Ownership Plan Shares Not Committed to be Released",
        "negatedLabel": "Less: average unallocated ESOP shares",
        "documentation": "Number of employee stock ownership plan (ESOP) shares that have not been committed to be released determined by relating the portion of time within a reporting period that these shares have been outstanding to the total time in that period."
       }
      }
     },
     "auth_ref": [
      "r1313"
     ]
    },
    "us-gaap_WeightedAverageNumberOfSharesIssuedBasic": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "WeightedAverageNumberOfSharesIssuedBasic",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails": {
       "parentTag": "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted Average Number of Shares Issued, Basic",
        "terseLabel": "Average number of common shares outstanding",
        "documentation": "This element represents the weighted average total number of shares issued throughout the period including the first (beginning balance outstanding) and last (ending balance outstanding) day of the period before considering any reductions (for instance, shares held in treasury) to arrive at the weighted average number of shares outstanding. Weighted average relates to the portion of time within a reporting period that common shares have been issued and outstanding to the total time in that period. Such concept is used in determining the weighted average number of shares outstanding for purposes of calculating earnings per share (basic)."
       }
      }
     },
     "auth_ref": [
      "r29",
      "r30"
     ]
    },
    "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "WeightedAverageNumberOfSharesOutstandingBasic",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails": {
       "parentTag": "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails",
      "http://www.needhambank.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted Average Number of Shares Outstanding, Basic",
        "terseLabel": "Weighted average common shares outstanding, basic",
        "totalLabel": "Average number of common shares outstanding used to calculate basic EPS",
        "documentation": "Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period."
       }
      }
     },
     "auth_ref": [
      "r216",
      "r222"
     ]
    },
    "us-gaap_WeightedAverageNumberOfSharesRestrictedStock": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "WeightedAverageNumberOfSharesRestrictedStock",
     "calculation": {
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails": {
       "parentTag": "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.needhambank.com/role/DisclosureEarningsPerShareepsComputationOfEpsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted Average Number of Shares, Restricted Stock",
        "negatedLabel": "Less: average unvested restricted stock awards",
        "documentation": "Number of shares of restricted stock determined by relating the portion of time within a reporting period that restricted shares have been outstanding to the total time in that period. Restricted shares are subject to sales, contractual, regulatory or other restrictions that prevent or inhibit the holder from freely disposing of them before the restriction ends."
       }
      }
     },
     "auth_ref": [
      "r30"
     ]
    },
    "ecd_YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member]",
        "terseLabel": "Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested"
       }
      }
     },
     "auth_ref": [
      "r1039"
     ]
    }
   }
  }
 },
 "std_ref": {
  "r0": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "15",
   "Paragraph": "12",
   "Subparagraph": "(f)(2)",
   "SubTopic": "10",
   "Topic": "810",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481410/810-10-15-12"
  },
  "r1": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "SubTopic": "230",
   "Topic": "830",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477401/830-230-45-1"
  },
  "r2": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "10A",
   "SubTopic": "10",
   "Topic": "220",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-10A"
  },
  "r3": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "10A",
   "Subparagraph": "(j)",
   "SubTopic": "10",
   "Topic": "220",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-10A"
  },
  "r4": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "10A",
   "Subparagraph": "(k)",
   "SubTopic": "10",
   "Topic": "220",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-10A"
  },
  "r5": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "12",
   "SubTopic": "10",
   "Topic": "220",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-12"
  },
  "r6": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "2",
   "SubTopic": "405",
   "Topic": "942",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477787/942-405-45-2"
  },
  "r7": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "20",
   "SubTopic": "10",
   "Topic": "810",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481231/810-10-45-20"
  },
  "r8": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "21C",
   "SubTopic": "10",
   "Topic": "230",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-21C"
  },
  "r9": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "28",
   "Subparagraph": "(a)",
   "SubTopic": "10",
   "Topic": "230",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-28"
  },
  "r10": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "28",
   "Subparagraph": "(b)",
   "SubTopic": "10",
   "Topic": "230",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-28"
  },
  "r11": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "SubTopic": "10",
   "Topic": "360",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482099/360-10-50-1"
  },
  "r12": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "SubTopic": "20",
   "Topic": "715",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r13": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1A",
   "Subparagraph": "(c)(3)",
   "SubTopic": "10",
   "Topic": "810",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481203/810-10-50-1A"
  },
  "r14": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "SubTopic": "10",
   "Topic": "505",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481112/505-10-50-2"
  },
  "r15": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "15",
   "SubTopic": "10",
   "Topic": "220",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482739/220-10-55-15"
  },
  "r16": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(22))",
   "SubTopic": "10",
   "Topic": "210",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r17": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "220",
   "SubTopic": "10",
   "Section": "45",
   "Paragraph": "14",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-14"
  },
  "r18": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "220",
   "SubTopic": "10",
   "Section": "45",
   "Paragraph": "14A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-14A"
  },
  "r19": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "220",
   "SubTopic": "10",
   "Section": "45",
   "Paragraph": "5",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-5"
  },
  "r20": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "230",
   "SubTopic": "10",
   "Section": "45",
   "Paragraph": "12",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-12"
  },
  "r21": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "230",
   "SubTopic": "10",
   "Section": "45",
   "Paragraph": "12",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-12"
  },
  "r22": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "230",
   "SubTopic": "10",
   "Section": "45",
   "Paragraph": "13",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-13"
  },
  "r23": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "230",
   "SubTopic": "10",
   "Section": "45",
   "Paragraph": "13",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-13"
  },
  "r24": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "230",
   "SubTopic": "10",
   "Section": "45",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-4"
  },
  "r25": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "230",
   "SubTopic": "10",
   "Section": "45",
   "Paragraph": "8",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-8"
  },
  "r26": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "230",
   "SubTopic": "10",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482913/230-10-50-2"
  },
  "r27": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "230",
   "SubTopic": "10",
   "Section": "50",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482913/230-10-50-3"
  },
  "r28": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "230",
   "SubTopic": "10",
   "Section": "50",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482913/230-10-50-4"
  },
  "r29": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "260",
   "SubTopic": "10",
   "Section": "45",
   "Paragraph": "10",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482689/260-10-45-10"
  },
  "r30": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "260",
   "SubTopic": "10",
   "Section": "45",
   "Paragraph": "13",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482689/260-10-45-13"
  },
  "r31": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "360",
   "SubTopic": "10",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482099/360-10-50-1"
  },
  "r32": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "715",
   "SubTopic": "20",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-2"
  },
  "r33": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "715",
   "SubTopic": "20",
   "Section": "50",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-3"
  },
  "r34": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "715",
   "SubTopic": "20",
   "Section": "50",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-4"
  },
  "r35": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "715",
   "SubTopic": "20",
   "Section": "55",
   "Paragraph": "17",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480482/715-20-55-17"
  },
  "r36": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "718",
   "SubTopic": "10",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(h)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r37": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Name": "Accounting Standards Codification",
   "Topic": "942",
   "SubTopic": "470",
   "Section": "50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477734/942-470-50-1"
  },
  "r38": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(19))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r39": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(20))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r40": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(21))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r41": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(22)(a)(1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r42": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(23))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r43": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(24))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r44": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(25))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r45": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(26))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r46": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(28))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r47": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(29))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r48": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(3))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r49": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(30)(a)(1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r50": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(30)(a)(3))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r51": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(30))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r52": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(31))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r53": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(32))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r54": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(4))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r55": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "220",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/220/tableOfContent"
  },
  "r56": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "10A",
   "Subparagraph": "(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-10A"
  },
  "r57": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "11",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-11"
  },
  "r58": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.5-03(1)(e))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483621/220-10-S99-2"
  },
  "r59": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.5-03(10))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483621/220-10-S99-2"
  },
  "r60": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.5-03(20))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483621/220-10-S99-2"
  },
  "r61": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.5-03(3))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483621/220-10-S99-2"
  },
  "r62": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.5-03(4))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483621/220-10-S99-2"
  },
  "r63": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.5-03(6))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483621/220-10-S99-2"
  },
  "r64": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "13",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-13"
  },
  "r65": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "13",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-13"
  },
  "r66": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "15",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-15"
  },
  "r67": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "24",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-24"
  },
  "r68": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "25",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-25"
  },
  "r69": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "28",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-28"
  },
  "r70": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SAB Topic 4.E)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480418/310-10-S99-2"
  },
  "r71": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "440",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/440/tableOfContent"
  },
  "r72": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "505",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.3-04)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480008/505-10-S99-1"
  },
  "r73": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r74": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "810",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/810/tableOfContent"
  },
  "r75": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "810",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "19",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481231/810-10-45-19"
  },
  "r76": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-03(1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478546/942-210-S99-1"
  },
  "r77": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-03(11))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478546/942-210-S99-1"
  },
  "r78": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-03(12))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478546/942-210-S99-1"
  },
  "r79": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-03(13)(3)(a))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478546/942-210-S99-1"
  },
  "r80": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-03(15)(5))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478546/942-210-S99-1"
  },
  "r81": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-03(15))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478546/942-210-S99-1"
  },
  "r82": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-03(2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478546/942-210-S99-1"
  },
  "r83": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-03(23))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478546/942-210-S99-1"
  },
  "r84": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-03(3))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478546/942-210-S99-1"
  },
  "r85": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r86": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(11))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r87": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(12))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r88": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(13)(b))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r89": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(13)(d))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r90": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(13)(h))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r91": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(13))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r92": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(14))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r93": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(15))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r94": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r95": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(22))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r96": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(3))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r97": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(4))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r98": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(5))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r99": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(6))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r100": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(7))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r101": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(8))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r102": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "230",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479024/942-230-45-1"
  },
  "r103": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/942-320/tableOfContent"
  },
  "r104": {
   "role": "http://fasb.org/us-gaap/role/ref/legacyRef",
   "Topic": "942",
   "SubTopic": "470",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478878/942-470-45-1"
  },
  "r105": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "32",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-32"
  },
  "r106": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "32",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-32"
  },
  "r107": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "11B",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-11B"
  },
  "r108": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "29",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-29"
  },
  "r109": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "29",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-29"
  },
  "r110": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "29",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-29"
  },
  "r111": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "33",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-33"
  },
  "r112": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-7"
  },
  "r113": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-7"
  },
  "r114": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-7A"
  },
  "r115": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "310",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "40",
   "Paragraph": "7A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481774/310-40-40-7A"
  },
  "r116": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-6"
  },
  "r117": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-6"
  },
  "r118": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-6"
  },
  "r119": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(b)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-6"
  },
  "r120": {
   "role": "http://fasb.org/us-gaap/role/ref/otherTransitionRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-7"
  },
  "r121": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "2",
   "Subparagraph": "(a)",
   "SubTopic": "20",
   "Topic": "740",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482659/740-20-45-2"
  },
  "r122": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "21",
   "SubTopic": "10",
   "Topic": "230",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-21"
  },
  "r123": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)",
   "SubTopic": "10",
   "Topic": "275",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482861/275-10-50-1"
  },
  "r124": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)",
   "SubTopic": "10",
   "Topic": "275",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482861/275-10-50-1"
  },
  "r125": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "9",
   "Subparagraph": "(b)",
   "SubTopic": "10",
   "Topic": "740",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482685/740-10-50-9"
  },
  "r126": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.4-08(h))",
   "SubTopic": "10",
   "Topic": "235",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480678/235-10-S99-1"
  },
  "r127": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1402",
   "Paragraph": "b",
   "Subparagraph": "(1)",
   "Publisher": "SEC"
  },
  "r128": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1402",
   "Paragraph": "b",
   "Subparagraph": "(1)(Instruction 3)",
   "Publisher": "SEC"
  },
  "r129": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1403",
   "Paragraph": "b",
   "Publisher": "SEC"
  },
  "r130": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1404",
   "Paragraph": "a",
   "Publisher": "SEC"
  },
  "r131": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1404",
   "Paragraph": "b",
   "Publisher": "SEC"
  },
  "r132": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1405",
   "Paragraph": "a",
   "Subparagraph": "(2)",
   "Publisher": "SEC"
  },
  "r133": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1405",
   "Paragraph": "a",
   "Subparagraph": "(3)",
   "Publisher": "SEC"
  },
  "r134": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1405",
   "Paragraph": "a",
   "Subparagraph": "(4)",
   "Publisher": "SEC"
  },
  "r135": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1405",
   "Paragraph": "c",
   "Publisher": "SEC"
  },
  "r136": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "04",
   "Paragraph": "a",
   "Publisher": "SEC"
  },
  "r137": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "12",
   "Paragraph": "Column A",
   "Footnote": "2",
   "Publisher": "SEC"
  },
  "r138": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "12A",
   "Paragraph": "Column A",
   "Footnote": "2",
   "Publisher": "SEC"
  },
  "r139": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "12B",
   "Paragraph": "Column A",
   "Subparagraph": "(a)",
   "Footnote": "4",
   "Publisher": "SEC"
  },
  "r140": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "12B",
   "Paragraph": "Column A",
   "Subparagraph": "(b)",
   "Footnote": "4",
   "Publisher": "SEC"
  },
  "r141": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "14",
   "Paragraph": "Column A",
   "Footnote": "2",
   "Publisher": "SEC"
  },
  "r142": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "28",
   "Paragraph": "Column E",
   "Footnote": "4",
   "Publisher": "SEC"
  },
  "r143": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "29",
   "Paragraph": "Column A",
   "Footnote": "3",
   "Publisher": "SEC"
  },
  "r144": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "29",
   "Paragraph": "Column B",
   "Publisher": "SEC"
  },
  "r145": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "29",
   "Paragraph": "Column C",
   "Publisher": "SEC"
  },
  "r146": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Staff Accounting Bulletin (SAB)",
   "Number": "Topic 5",
   "Section": "Y",
   "Paragraph": "Question 2",
   "Publisher": "SEC"
  },
  "r147": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Staff Accounting Bulletin (SAB)",
   "Number": "Topic 5",
   "Section": "Y",
   "Paragraph": "Question 4",
   "Publisher": "SEC"
  },
  "r148": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "105",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "6",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479343/105-10-65-6"
  },
  "r149": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "105",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "9",
   "Subparagraph": "(d)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479343/105-10-65-9"
  },
  "r150": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "105",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "9",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479343/105-10-65-9"
  },
  "r151": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "205",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/205/tableOfContent"
  },
  "r152": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "205",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S45",
   "Paragraph": "5",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481034/205-10-S45-5"
  },
  "r153": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "205",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480922/205-10-S99-3"
  },
  "r154": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "205",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483499/205-20-50-7"
  },
  "r155": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(15))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r156": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(16))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r157": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(18))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r158": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(30)(a)(4))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r159": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483466/210-20-50-3"
  },
  "r160": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "10",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483444/210-20-55-10"
  },
  "r161": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "10A",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-10A"
  },
  "r162": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "10A",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-10A"
  },
  "r163": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "10A",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-10A"
  },
  "r164": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "11",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-11"
  },
  "r165": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "12",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-12"
  },
  "r166": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "15",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-15"
  },
  "r167": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1A",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-1A"
  },
  "r168": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1A",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-1A"
  },
  "r169": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1A",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-1A"
  },
  "r170": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1B",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-1B"
  },
  "r171": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1B",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-1B"
  },
  "r172": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482765/220-10-50-4"
  },
  "r173": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482765/220-10-50-5"
  },
  "r174": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482765/220-10-50-6"
  },
  "r175": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.5-03(21))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483621/220-10-S99-2"
  },
  "r176": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.5-03(24))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483621/220-10-S99-2"
  },
  "r177": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.5-03(25))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483621/220-10-S99-2"
  },
  "r178": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "21",
   "Subparagraph": "(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147476148/220-40-50-21"
  },
  "r179": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "22",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147476148/220-40-50-22"
  },
  "r180": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "220",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147476148/220-40-50-6"
  },
  "r181": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "11",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-11"
  },
  "r182": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "12",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-12"
  },
  "r183": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "17",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-17"
  },
  "r184": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-2"
  },
  "r185": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "24",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-24"
  },
  "r186": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "25",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-25"
  },
  "r187": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482913/230-10-50-2"
  },
  "r188": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482913/230-10-50-2A"
  },
  "r189": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "8",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482913/230-10-50-8"
  },
  "r190": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "235",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/235/tableOfContent"
  },
  "r191": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483426/235-10-50-1"
  },
  "r192": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480738/235-10-S50-1"
  },
  "r193": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S50",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480738/235-10-S50-4"
  },
  "r194": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.4-08(b))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480678/235-10-S99-1"
  },
  "r195": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.4-08(g)(1)(i))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480678/235-10-S99-1"
  },
  "r196": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.4-08(g)(1)(ii))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480678/235-10-S99-1"
  },
  "r197": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.4-08(k)(2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480678/235-10-S99-1"
  },
  "r198": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.12-04(a))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480678/235-10-S99-3"
  },
  "r199": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "23",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483421/250-10-45-23"
  },
  "r200": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "24",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483421/250-10-45-24"
  },
  "r201": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "5",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483421/250-10-45-5"
  },
  "r202": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-1"
  },
  "r203": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-1"
  },
  "r204": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-1"
  },
  "r205": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-1"
  },
  "r206": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "11",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-11"
  },
  "r207": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "11",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-11"
  },
  "r208": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-3"
  },
  "r209": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-4"
  },
  "r210": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-6"
  },
  "r211": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-7"
  },
  "r212": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-7"
  },
  "r213": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "8",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-8"
  },
  "r214": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "9",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-9"
  },
  "r215": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "260",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/260/tableOfContent"
  },
  "r216": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "10",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482689/260-10-45-10"
  },
  "r217": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "16",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482689/260-10-45-16"
  },
  "r218": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482689/260-10-45-2"
  },
  "r219": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "60B",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482689/260-10-45-60B"
  },
  "r220": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "60B",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482689/260-10-45-60B"
  },
  "r221": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "7",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482689/260-10-45-7"
  },
  "r222": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482662/260-10-50-1"
  },
  "r223": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482662/260-10-50-1"
  },
  "r224": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482662/260-10-50-2"
  },
  "r225": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482662/260-10-50-3"
  },
  "r226": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "15",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482635/260-10-55-15"
  },
  "r227": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "270",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482964/270-10-50-1"
  },
  "r228": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "272",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483014/272-10-45-1"
  },
  "r229": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "275",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "12",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482861/275-10-50-12"
  },
  "r230": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "275",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482861/275-10-50-4"
  },
  "r231": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "275",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482861/275-10-50-6"
  },
  "r232": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "275",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "9",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482861/275-10-50-9"
  },
  "r233": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "22",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-22"
  },
  "r234": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "22",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-22"
  },
  "r235": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "22",
   "Subparagraph": "(h)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-22"
  },
  "r236": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "30",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-30"
  },
  "r237": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "32",
   "Subparagraph": "(ee)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-32"
  },
  "r238": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "13",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481990/310-10-45-13"
  },
  "r239": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481990/310-10-45-2"
  },
  "r240": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-4"
  },
  "r241": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "42",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-42"
  },
  "r242": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "42",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-42"
  },
  "r243": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "42",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-42"
  },
  "r244": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "44",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-44"
  },
  "r245": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/320/tableOfContent"
  },
  "r246": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "11",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481830/320-10-45-11"
  },
  "r247": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "10",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-10"
  },
  "r248": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-2"
  },
  "r249": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-2"
  },
  "r250": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(aa)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-2"
  },
  "r251": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(aaa)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-2"
  },
  "r252": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-2"
  },
  "r253": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-2"
  },
  "r254": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-2"
  },
  "r255": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-2A"
  },
  "r256": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-3"
  },
  "r257": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-3"
  },
  "r258": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-3"
  },
  "r259": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-3"
  },
  "r260": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-3"
  },
  "r261": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5"
  },
  "r262": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5"
  },
  "r263": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(aaa)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5"
  },
  "r264": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5"
  },
  "r265": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5"
  },
  "r266": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5"
  },
  "r267": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(f)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5"
  },
  "r268": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(f)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5"
  },
  "r269": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(f)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5"
  },
  "r270": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(f)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5"
  },
  "r271": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5A",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5A"
  },
  "r272": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5A",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5A"
  },
  "r273": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5A",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5A"
  },
  "r274": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5B",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5B"
  },
  "r275": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5B",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5B"
  },
  "r276": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5B",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5B"
  },
  "r277": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5B",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5B"
  },
  "r278": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5B",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5B"
  },
  "r279": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "9",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-9"
  },
  "r280": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "323",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481687/323-10-50-3"
  },
  "r281": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "4",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479654/326-10-65-4"
  },
  "r282": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "5",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479654/326-10-65-5"
  },
  "r283": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479344/326-20-45-2"
  },
  "r284": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "11",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-11"
  },
  "r285": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r286": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r287": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r288": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r289": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r290": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r291": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r292": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "14",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-14"
  },
  "r293": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "16",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-16"
  },
  "r294": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "16",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-16"
  },
  "r295": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "16",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-16"
  },
  "r296": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "16",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-16"
  },
  "r297": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3B",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-3B"
  },
  "r298": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3D",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-3D"
  },
  "r299": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-5"
  },
  "r300": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-5"
  },
  "r301": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-6"
  },
  "r302": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479130/326-30-45-1"
  },
  "r303": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479106/326-30-50-3A"
  },
  "r304": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3B",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479106/326-30-50-3B"
  },
  "r305": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479106/326-30-50-4"
  },
  "r306": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479106/326-30-50-4"
  },
  "r307": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479106/326-30-50-4"
  },
  "r308": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(b)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479106/326-30-50-4"
  },
  "r309": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479106/326-30-50-5"
  },
  "r310": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479106/326-30-50-7"
  },
  "r311": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "326",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "9",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479106/326-30-50-9"
  },
  "r312": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480265/350-10-S45-1"
  },
  "r313": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482598/350-20-45-1"
  },
  "r314": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482598/350-20-45-2"
  },
  "r315": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-1"
  },
  "r316": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-2"
  },
  "r317": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-4"
  },
  "r318": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-6"
  },
  "r319": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482686/350-30-45-1"
  },
  "r320": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482686/350-30-45-2"
  },
  "r321": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-1"
  },
  "r322": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-1"
  },
  "r323": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-1"
  },
  "r324": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-1"
  },
  "r325": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-1"
  },
  "r326": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-2"
  },
  "r327": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-2"
  },
  "r328": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-2"
  },
  "r329": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-2"
  },
  "r330": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-2"
  },
  "r331": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-3"
  },
  "r332": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "350",
   "SubTopic": "60",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "1",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147476166/350-60-65-1"
  },
  "r333": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "405",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(e)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477092/405-40-50-1"
  },
  "r334": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "440",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482648/440-10-50-4"
  },
  "r335": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "440",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482648/440-10-50-4"
  },
  "r336": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "450",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483076/450-20-50-1"
  },
  "r337": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "450",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483076/450-20-50-4"
  },
  "r338": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "450",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "9",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483076/450-20-50-9"
  },
  "r339": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "450",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SAB Topic 5.Y.Q2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480102/450-20-S99-1"
  },
  "r340": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "450",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SAB Topic 5.Y.Q4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480102/450-20-S99-1"
  },
  "r341": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "460",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482454/460-10-45-1"
  },
  "r342": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "460",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482425/460-10-50-3"
  },
  "r343": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1A",
   "Subparagraph": "(SX 210.13-01(a)(4)(i))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1A"
  },
  "r344": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1A",
   "Subparagraph": "(SX 210.13-01(a)(4)(iii)(A))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1A"
  },
  "r345": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1A",
   "Subparagraph": "(SX 210.13-01(a)(4)(iv))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1A"
  },
  "r346": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1A",
   "Subparagraph": "(SX 210.13-01(a)(5))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1A"
  },
  "r347": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1B",
   "Subparagraph": "(SX 210.13-02(a)(4)(i))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1B"
  },
  "r348": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1B",
   "Subparagraph": "(SX 210.13-02(a)(4)(iii)(A))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1B"
  },
  "r349": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1B",
   "Subparagraph": "(SX 210.13-02(a)(4)(iii)(B))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1B"
  },
  "r350": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1B",
   "Subparagraph": "(SX 210.13-02(a)(4)(iv))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1B"
  },
  "r351": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1B",
   "Subparagraph": "(SX 210.13-02(a)(5))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1B"
  },
  "r352": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1B",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481139/470-20-50-1B"
  },
  "r353": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1D",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481139/470-20-50-1D"
  },
  "r354": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1I",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481139/470-20-50-1I"
  },
  "r355": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "4",
   "Subparagraph": "(f)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481538/470-20-65-4"
  },
  "r356": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "470",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "4",
   "Subparagraph": "(f)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481538/470-20-65-4"
  },
  "r357": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "480",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479887/480-10-S45-1"
  },
  "r358": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "480",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S45",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479887/480-10-S45-2"
  },
  "r359": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "480",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S45",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479887/480-10-S45-3"
  },
  "r360": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "480",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479857/480-10-S50-1"
  },
  "r361": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "480",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S50",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479857/480-10-S50-3"
  },
  "r362": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "480",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(01)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480244/480-10-S99-1"
  },
  "r363": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "480",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(01)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480244/480-10-S99-1"
  },
  "r364": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "480",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(01)(iii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480244/480-10-S99-1"
  },
  "r365": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "480",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3A",
   "Subparagraph": "(24)(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480244/480-10-S99-3A"
  },
  "r366": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "505",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481112/505-10-50-13"
  },
  "r367": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "505",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "18",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481112/505-10-50-18"
  },
  "r368": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "505",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.3-04)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480008/505-10-S99-1"
  },
  "r369": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480535/715-20-45-3"
  },
  "r370": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r371": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r372": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(iv)(01)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r373": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(iv)(02)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r374": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(iv)(02)(A)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r375": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(iv)(02)(B)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r376": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(iv)(02)(C)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r377": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(iv)(03)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r378": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(h)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r379": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r380": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r381": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r382": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(c)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r383": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(c)(iv)(01)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r384": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(c)(iv)(02)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r385": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(c)(iv)(03)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r386": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r387": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r388": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r389": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(g)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r390": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(h)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r391": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r392": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(j)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r393": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(j)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r394": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(j)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r395": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(j)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r396": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(k)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r397": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(l)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r398": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(m)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r399": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(q)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r400": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-6"
  },
  "r401": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-7"
  },
  "r402": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "70",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/715-70/tableOfContent"
  },
  "r403": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "70",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480794/715-70-50-1"
  },
  "r404": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "80",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480576/715-80-50-5"
  },
  "r405": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "80",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480576/715-80-50-5"
  },
  "r406": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "80",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480576/715-80-50-5"
  },
  "r407": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "80",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480576/715-80-50-5"
  },
  "r408": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "80",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(e)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480576/715-80-50-5"
  },
  "r409": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "80",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(e)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480576/715-80-50-5"
  },
  "r410": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "80",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(f)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480576/715-80-50-5"
  },
  "r411": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "80",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(f)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480576/715-80-50-5"
  },
  "r412": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "715",
   "SubTopic": "80",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(f)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480576/715-80-50-5"
  },
  "r413": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "35",
   "Paragraph": "1D",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480483/718-10-35-1D"
  },
  "r414": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "35",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480483/718-10-35-2"
  },
  "r415": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "35",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480483/718-10-35-3"
  },
  "r416": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r417": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r418": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r419": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r420": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r421": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(iii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r422": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(iv)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r423": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(iv)(01)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r424": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(iv)(02)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r425": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(iv)(03)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r426": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(iv)(04)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r427": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r428": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r429": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)(iii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r430": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)(iii)(01)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r431": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)(iii)(02)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r432": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)(iii)(03)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r433": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r434": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r435": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(e)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r436": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(e)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r437": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(f)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r438": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(f)(2)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r439": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(f)(2)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r440": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(f)(2)(iii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r441": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(f)(2)(iv)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r442": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(f)(2)(v)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r443": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(h)(1)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r444": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r445": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(l)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r446": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "17",
   "Subparagraph": "(d)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480336/718-10-65-17"
  },
  "r447": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479983/718-10-S45-1"
  },
  "r448": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SAB Topic 14.F)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479830/718-10-S99-1"
  },
  "r449": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480520/718-40-45-2"
  },
  "r450": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480489/718-40-50-1"
  },
  "r451": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480489/718-40-50-1"
  },
  "r452": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "718",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480489/718-40-50-1"
  },
  "r453": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "720",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483359/720-20-50-1"
  },
  "r454": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482525/740-10-45-4"
  },
  "r455": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "6",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482525/740-10-45-6"
  },
  "r456": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "10",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482685/740-10-50-10"
  },
  "r457": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "12",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482685/740-10-50-12"
  },
  "r458": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "12",
   "Subparagraph": "(b)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482685/740-10-50-12"
  },
  "r459": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "15",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482685/740-10-50-15"
  },
  "r460": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "22",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482685/740-10-50-22"
  },
  "r461": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "23",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482685/740-10-50-23"
  },
  "r462": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "8",
   "Subparagraph": "(d)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482615/740-10-65-8"
  },
  "r463": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "8",
   "Subparagraph": "(d)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482615/740-10-65-8"
  },
  "r464": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SAB Topic 6.I.7)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479360/740-10-S99-1"
  },
  "r465": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "11",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482659/740-20-45-11"
  },
  "r466": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "2",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482659/740-20-45-2"
  },
  "r467": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "323",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "2",
   "Subparagraph": "(d)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478666/740-323-65-2"
  },
  "r468": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "323",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "2",
   "Subparagraph": "(d)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478666/740-323-65-2"
  },
  "r469": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "323",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "2",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478666/740-323-65-2"
  },
  "r470": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "323",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "2",
   "Subparagraph": "(g)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478666/740-323-65-2"
  },
  "r471": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "740",
   "SubTopic": "323",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "2",
   "Subparagraph": "(g)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478666/740-323-65-2"
  },
  "r472": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "05",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479515/805-10-05-4"
  },
  "r473": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "25",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479405/805-10-25-1"
  },
  "r474": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r475": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r476": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r477": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r478": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(e)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r479": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(e)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r480": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(e)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r481": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(e)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r482": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r483": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(g)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r484": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(g)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r485": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(g)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r486": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(g)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r487": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(h)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r488": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(h)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r489": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(h)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r490": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(h)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r491": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(h)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r492": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-3"
  },
  "r493": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-1"
  },
  "r494": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-1"
  },
  "r495": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-1"
  },
  "r496": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-1"
  },
  "r497": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-1"
  },
  "r498": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-1"
  },
  "r499": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-1"
  },
  "r500": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(1)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-1"
  },
  "r501": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(1)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-1"
  },
  "r502": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(e)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-1"
  },
  "r503": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(e)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-1"
  },
  "r504": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-2"
  },
  "r505": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-4"
  },
  "r506": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4A",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-4A"
  },
  "r507": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4A",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-4A"
  },
  "r508": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4A",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-4A"
  },
  "r509": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-5"
  },
  "r510": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r511": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r512": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r513": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r514": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r515": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r516": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r517": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r518": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r519": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r520": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r521": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(f)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r522": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(f)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r523": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-2"
  },
  "r524": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-4"
  },
  "r525": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-4"
  },
  "r526": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-4"
  },
  "r527": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "60",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "1",
   "Subparagraph": "(d)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147476176/805-60-65-1"
  },
  "r528": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "805",
   "SubTopic": "60",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "1",
   "Subparagraph": "(g)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147476176/805-60-65-1"
  },
  "r529": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "810",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "19",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481231/810-10-45-19"
  },
  "r530": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "810",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "25",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481231/810-10-45-25"
  },
  "r531": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "810",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "25",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481231/810-10-45-25"
  },
  "r532": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "810",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1A",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481203/810-10-50-1A"
  },
  "r533": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "810",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1A",
   "Subparagraph": "(c)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481203/810-10-50-1A"
  },
  "r534": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "810",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2AG",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481203/810-10-50-2AG"
  },
  "r535": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "810",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(bb)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481203/810-10-50-3"
  },
  "r536": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "810",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481203/810-10-50-3"
  },
  "r537": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/815/tableOfContent"
  },
  "r538": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1A",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-1A"
  },
  "r539": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1A",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-1A"
  },
  "r540": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1A",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-1A"
  },
  "r541": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1A",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-1A"
  },
  "r542": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-1B"
  },
  "r543": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(1)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-2"
  },
  "r544": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(1)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-2"
  },
  "r545": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(1)(iii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-2"
  },
  "r546": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-2"
  },
  "r547": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-2"
  },
  "r548": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4A",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4A"
  },
  "r549": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4A",
   "Subparagraph": "(b)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4A"
  },
  "r550": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4A",
   "Subparagraph": "(b)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4A"
  },
  "r551": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4B",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4B"
  },
  "r552": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4B",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4B"
  },
  "r553": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4B",
   "Subparagraph": "(c)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4B"
  },
  "r554": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4B",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4B"
  },
  "r555": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4B",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4B"
  },
  "r556": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4C",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4C"
  },
  "r557": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4C",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4C"
  },
  "r558": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4C",
   "Subparagraph": "(bb)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4C"
  },
  "r559": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4C",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4C"
  },
  "r560": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4C",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4C"
  },
  "r561": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4C",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4C"
  },
  "r562": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4C",
   "Subparagraph": "(g)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4C"
  },
  "r563": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4CC",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4CC"
  },
  "r564": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4CCC",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4CCC"
  },
  "r565": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4CCC",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4CCC"
  },
  "r566": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4CCC",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4CCC"
  },
  "r567": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4D",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4D"
  },
  "r568": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4D",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4D"
  },
  "r569": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4D",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4D"
  },
  "r570": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4D",
   "Subparagraph": "(a)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4D"
  },
  "r571": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4D",
   "Subparagraph": "(a)(5)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4D"
  },
  "r572": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4D",
   "Subparagraph": "(a)(6)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4D"
  },
  "r573": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4E",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4E"
  },
  "r574": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4EE",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4EE"
  },
  "r575": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4EE",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4EE"
  },
  "r576": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4EE",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4EE"
  },
  "r577": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4EE",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4EE"
  },
  "r578": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4EEE",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4EEE"
  },
  "r579": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4EEE",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4EEE"
  },
  "r580": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4EEE",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4EEE"
  },
  "r581": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4F",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4F"
  },
  "r582": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4H",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4H"
  },
  "r583": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4H",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4H"
  },
  "r584": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4I",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4I"
  },
  "r585": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4K",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4K"
  },
  "r586": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4K",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4K"
  },
  "r587": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4K",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4K"
  },
  "r588": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4K",
   "Subparagraph": "(a)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4K"
  },
  "r589": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4K",
   "Subparagraph": "(a)(5)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4K"
  },
  "r590": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4K",
   "Subparagraph": "(b)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4K"
  },
  "r591": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4K",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4K"
  },
  "r592": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4K",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4K"
  },
  "r593": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5C",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-5C"
  },
  "r594": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-7A"
  },
  "r595": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "8A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-8A"
  },
  "r596": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "15",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480960/815-15-50-3"
  },
  "r597": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480627/815-20-45-3"
  },
  "r598": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "6",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480528/815-20-65-6"
  },
  "r599": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "6",
   "Subparagraph": "(h)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480528/815-20-65-6"
  },
  "r600": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "6",
   "Subparagraph": "(h)(1)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480528/815-20-65-6"
  },
  "r601": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "6",
   "Subparagraph": "(h)(1)(iii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480528/815-20-65-6"
  },
  "r602": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "6",
   "Subparagraph": "(h)(1)(iv)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480528/815-20-65-6"
  },
  "r603": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "6",
   "Subparagraph": "(i)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480528/815-20-65-6"
  },
  "r604": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480870/815-30-50-2"
  },
  "r605": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480870/815-30-50-2"
  },
  "r606": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480870/815-30-50-2"
  },
  "r607": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480870/815-30-50-2"
  },
  "r608": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480237/815-40-50-5"
  },
  "r609": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "1",
   "Subparagraph": "(e)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480175/815-40-65-1"
  },
  "r610": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "1",
   "Subparagraph": "(e)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480175/815-40-65-1"
  },
  "r611": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "815",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "1",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480175/815-40-65-1"
  },
  "r612": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "35",
   "Paragraph": "54B",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482134/820-10-35-54B"
  },
  "r613": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r614": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r615": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(bbb)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r616": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(bbb)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r617": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(bbb)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r618": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(bbb)(2)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r619": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r620": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r621": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r622": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r623": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r624": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r625": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(g)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r626": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(h)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r627": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2E",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2E"
  },
  "r628": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2G",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2G"
  },
  "r629": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-3"
  },
  "r630": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-3"
  },
  "r631": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6A",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-6A"
  },
  "r632": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6A",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-6A"
  },
  "r633": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6A",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-6A"
  },
  "r634": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6A",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-6A"
  },
  "r635": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6A",
   "Subparagraph": "(h)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-6A"
  },
  "r636": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6B",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-6B"
  },
  "r637": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6B",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-6B"
  },
  "r638": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6B",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-6B"
  },
  "r639": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "10",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-10"
  },
  "r640": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "11",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-11"
  },
  "r641": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "11",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-11"
  },
  "r642": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "11",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-11"
  },
  "r643": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "12",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-12"
  },
  "r644": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "28",
   "Subparagraph": "(c)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-28"
  },
  "r645": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "28",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-28"
  },
  "r646": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "28",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-28"
  },
  "r647": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "32",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-32"
  },
  "r648": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "830",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "17",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481694/830-30-45-17"
  },
  "r649": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "830",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "20",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481694/830-30-45-20"
  },
  "r650": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "830",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "20",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481694/830-30-45-20"
  },
  "r651": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "830",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "20",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481694/830-30-45-20"
  },
  "r652": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "830",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "20",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481694/830-30-45-20"
  },
  "r653": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "830",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "20",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481694/830-30-45-20"
  },
  "r654": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "830",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481674/830-30-50-1"
  },
  "r655": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "835",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482925/835-30-45-2"
  },
  "r656": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "842",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "8",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479832/842-10-65-8"
  },
  "r657": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "842",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "35",
   "Paragraph": "12A",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479165/842-20-35-12A"
  },
  "r658": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "842",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7A",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478964/842-20-50-7A"
  },
  "r659": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "848",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "2",
   "Subparagraph": "(a)(3)(iii)(03)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483550/848-10-65-2"
  },
  "r660": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "852",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "14",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481435/852-10-45-14"
  },
  "r661": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(b)(2)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-3"
  },
  "r662": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(b)(2)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-3"
  },
  "r663": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(b)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-3"
  },
  "r664": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(bb)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-3"
  },
  "r665": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(bb)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-3"
  },
  "r666": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(bb)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-3"
  },
  "r667": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-3"
  },
  "r668": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-3"
  },
  "r669": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-3"
  },
  "r670": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(b)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-4"
  },
  "r671": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(b)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-4"
  },
  "r672": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(b)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-4"
  },
  "r673": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-4"
  },
  "r674": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481444/860-30-45-1"
  },
  "r675": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1A",
   "Subparagraph": "(b)(1)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481420/860-30-50-1A"
  },
  "r676": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481420/860-30-50-7"
  },
  "r677": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481420/860-30-50-7"
  },
  "r678": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-3"
  },
  "r679": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-3"
  },
  "r680": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-3"
  },
  "r681": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)(4)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-3"
  },
  "r682": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-4"
  },
  "r683": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-4"
  },
  "r684": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-4"
  },
  "r685": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-4"
  },
  "r686": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)(5)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-4"
  },
  "r687": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)(6)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-4"
  },
  "r688": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)(7)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-4"
  },
  "r689": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-4"
  },
  "r690": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(e)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-4"
  },
  "r691": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(e)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-4"
  },
  "r692": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "860",
   "SubTopic": "50",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(e)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481229/860-50-50-4"
  },
  "r693": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "910",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482546/910-10-50-6"
  },
  "r694": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "924",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SAB Topic 11.L)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479941/924-10-S99-1"
  },
  "r695": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "926",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483154/926-20-50-5"
  },
  "r696": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "928",
   "SubTopic": "340",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478859/928-340-50-1"
  },
  "r697": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "940",
   "SubTopic": "820",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478119/940-820-50-1"
  },
  "r698": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-03(10)(1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478546/942-210-S99-1"
  },
  "r699": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-03(7))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478546/942-210-S99-1"
  },
  "r700": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(10))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r701": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(11))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r702": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(14)(a))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r703": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(23))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r704": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(26))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r705": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(27))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r706": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-04(9))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478524/942-220-S99-1"
  },
  "r707": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "235",
   "Name": "Accounting Standards Codification",
   "Section": "S50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478671/942-235-S50-1"
  },
  "r708": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "235",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-05(b)(1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477314/942-235-S99-1"
  },
  "r709": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "235",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-05(b)(2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477314/942-235-S99-1"
  },
  "r710": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "235",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477314/942-235-S99-2"
  },
  "r711": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477268/942-320-50-3A"
  },
  "r712": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3A",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477268/942-320-50-3A"
  },
  "r713": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3A",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477268/942-320-50-3A"
  },
  "r714": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3A",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477268/942-320-50-3A"
  },
  "r715": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3A",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477268/942-320-50-3A"
  },
  "r716": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "360",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478451/942-360-50-1"
  },
  "r717": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477270/942-505-50-1"
  },
  "r718": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477270/942-505-50-1"
  },
  "r719": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477270/942-505-50-1"
  },
  "r720": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477270/942-505-50-1"
  },
  "r721": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477270/942-505-50-1"
  },
  "r722": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477270/942-505-50-1"
  },
  "r723": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477270/942-505-50-1A"
  },
  "r724": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477270/942-505-50-1B"
  },
  "r725": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1D",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477270/942-505-50-1D"
  },
  "r726": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1F",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477270/942-505-50-1F"
  },
  "r727": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "942",
   "SubTopic": "825",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478898/942-825-50-1"
  },
  "r728": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-03(a)(12))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478777/944-210-S99-1"
  },
  "r729": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-03(a)(21))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478777/944-210-S99-1"
  },
  "r730": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-03(a)(22))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478777/944-210-S99-1"
  },
  "r731": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-03(a)(23)(a)(3))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478777/944-210-S99-1"
  },
  "r732": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-03(a)(23)(a)(4))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478777/944-210-S99-1"
  },
  "r733": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-03(a)(25))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478777/944-210-S99-1"
  },
  "r734": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-03(a)(8))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478777/944-210-S99-1"
  },
  "r735": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-04(11))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477250/944-220-S99-1"
  },
  "r736": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-04(16))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477250/944-220-S99-1"
  },
  "r737": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-04(18))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477250/944-220-S99-1"
  },
  "r738": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-04(19))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477250/944-220-S99-1"
  },
  "r739": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-04(2)(a))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477250/944-220-S99-1"
  },
  "r740": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-04(20))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477250/944-220-S99-1"
  },
  "r741": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-04(22))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477250/944-220-S99-1"
  },
  "r742": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-04(23))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477250/944-220-S99-1"
  },
  "r743": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-04(9))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477250/944-220-S99-1"
  },
  "r744": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480081/944-40-50-5"
  },
  "r745": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7A",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480081/944-40-50-7A"
  },
  "r746": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "2",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480016/944-40-65-2"
  },
  "r747": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "2",
   "Subparagraph": "(f)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480016/944-40-65-2"
  },
  "r748": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "2",
   "Subparagraph": "(f)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480016/944-40-65-2"
  },
  "r749": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "2",
   "Subparagraph": "(g)(2)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480016/944-40-65-2"
  },
  "r750": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "2",
   "Subparagraph": "(g)(2)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480016/944-40-65-2"
  },
  "r751": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "2",
   "Subparagraph": "(h)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480016/944-40-65-2"
  },
  "r752": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SAB Topic 5.W.Q2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479583/944-40-S99-1"
  },
  "r753": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "944",
   "SubTopic": "805",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478072/944-805-50-1"
  },
  "r754": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480424/946-10-50-1"
  },
  "r755": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480424/946-10-50-2"
  },
  "r756": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.6-03(d))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479886/946-10-S99-3"
  },
  "r757": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.6-03(i)(1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479886/946-10-S99-3"
  },
  "r758": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.6-03(i)(2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479886/946-10-S99-3"
  },
  "r759": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "11",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480990/946-20-50-11"
  },
  "r760": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "205",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "3",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478009/946-205-45-3"
  },
  "r761": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "205",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "4",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478009/946-205-45-4"
  },
  "r762": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "205",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "6",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478009/946-205-45-6"
  },
  "r763": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477796/946-210-45-4"
  },
  "r764": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-1"
  },
  "r765": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-1"
  },
  "r766": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-1"
  },
  "r767": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-1"
  },
  "r768": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "12",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-12"
  },
  "r769": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-2"
  },
  "r770": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-6"
  },
  "r771": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-6"
  },
  "r772": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-6"
  },
  "r773": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-6"
  },
  "r774": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-6"
  },
  "r775": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-6"
  },
  "r776": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r777": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(11))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r778": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(12)(b)(1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r779": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(12)(b)(2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r780": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(12)(b)(3))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r781": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(13)(a)(2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r782": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(13)(a)(3))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r783": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(14))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r784": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(16)(a))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r785": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(17))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r786": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(19))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r787": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(2)(a))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r788": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(2)(b))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r789": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(3)(a))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r790": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(3)(b))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r791": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(3)(c))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r792": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(6)(b))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r793": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(6)(c))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r794": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(6)(d))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r795": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(6)(e))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r796": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(8))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r797": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(9)(b))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r798": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(9)(c))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r799": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(9)(d))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r800": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(9)(e))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r801": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.6-05(2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-2"
  },
  "r802": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.6-05(4))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-2"
  },
  "r803": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "7",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479105/946-220-45-7"
  },
  "r804": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r805": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(2)(a))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r806": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(7)(a)(1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r807": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(7)(a)(2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r808": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(7)(a)(3))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r809": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(7)(a)(5))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r810": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(7)(a)(6))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r811": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(7)(a)(7))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r812": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(7)(c)(1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r813": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(7)(c)(2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r814": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(7)(c)(3))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r815": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(7)(c)(5))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r816": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(7)(c)(6))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r817": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(7)(c)(7))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r818": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-07(9))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-1"
  },
  "r819": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.6-09(1)(d))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-3"
  },
  "r820": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.6-09(4)(b))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-3"
  },
  "r821": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.6-09(6))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-3"
  },
  "r822": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.6-09(7))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-3"
  },
  "r823": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-12(Column A)(Footnote 2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-1"
  },
  "r824": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-12(Column C)(Footnote 5))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-1"
  },
  "r825": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.12-12A(Column A)(Footnote 2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-2"
  },
  "r826": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.12-12A(Column C)(Footnote 4))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-2"
  },
  "r827": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.12-12B(Column A)(Footnote 4)(a))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-3"
  },
  "r828": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.12-12B(Column A)(Footnote 4)(b))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-3"
  },
  "r829": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.12-12B(Column C)(Footnote 2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-3"
  },
  "r830": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "5",
   "Subparagraph": "(SX 210.12-13(Column A)(Footnote 3))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-5"
  },
  "r831": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "5",
   "Subparagraph": "(SX 210.12-13(Column C))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-5"
  },
  "r832": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "5",
   "Subparagraph": "(SX 210.12-13(Column G)(Footnote 8))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-5"
  },
  "r833": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "5",
   "Subparagraph": "(SX 210.12-13(Column G))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-5"
  },
  "r834": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "5A",
   "Subparagraph": "(SX 210.12-13A(Column B))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-5A"
  },
  "r835": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "5A",
   "Subparagraph": "(SX 210.12-13A(Column E))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-5A"
  },
  "r836": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "5B",
   "Subparagraph": "(SX 210.12-13B(Column E)(Footnote 4))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-5B"
  },
  "r837": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "5B",
   "Subparagraph": "(SX 210.12-13B(Column E))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-5B"
  },
  "r838": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "5C",
   "Subparagraph": "(SX 210.12-13C(Column H)(Footnote 7))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-5C"
  },
  "r839": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "5C",
   "Subparagraph": "(SX 210.12-13C(Column H))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-5C"
  },
  "r840": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "6",
   "Subparagraph": "(SX 210.12-14(Column A)(Footnote 2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-6"
  },
  "r841": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "6",
   "Subparagraph": "(SX 210.12-14(Column F)(Footnote 7))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-6"
  },
  "r842": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478448/946-505-50-2"
  },
  "r843": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "946",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478448/946-505-50-2"
  },
  "r844": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "948",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "S50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478322/948-310-S50-2"
  },
  "r845": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "948",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-29(Column A)(Footnote 3))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479628/948-310-S99-1"
  },
  "r846": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "948",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-29(Column B))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479628/948-310-S99-1"
  },
  "r847": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "948",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-29(Column C))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479628/948-310-S99-1"
  },
  "r848": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "954",
   "SubTopic": "440",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478522/954-440-50-1"
  },
  "r849": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "970",
   "SubTopic": "360",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-28(Column E)(Footnote 4))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478979/970-360-S99-1"
  },
  "r850": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "976",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477332/976-310-50-1"
  },
  "r851": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "978",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479230/978-310-50-1"
  },
  "r852": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Topic": "985",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481283/985-20-50-2"
  },
  "r853": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "10",
   "SubTopic": "10",
   "Topic": "825",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482881/825-10-55-10"
  },
  "r854": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "40",
   "SubTopic": "30",
   "Topic": "350",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482640/350-30-55-40"
  },
  "r855": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "15",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483444/210-20-55-15"
  },
  "r856": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "16",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483444/210-20-55-16"
  },
  "r857": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "20",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483444/210-20-55-20"
  },
  "r858": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "21",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483444/210-20-55-21"
  },
  "r859": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "22",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483444/210-20-55-22"
  },
  "r860": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "220",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "12",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147476148/220-40-50-12"
  },
  "r861": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "220",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "11",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147476153/220-40-55-11"
  },
  "r862": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "220",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "14",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147476153/220-40-55-14"
  },
  "r863": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "220",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "18",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147476153/220-40-55-18"
  },
  "r864": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "220",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "21",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147476153/220-40-55-21"
  },
  "r865": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "220",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "24",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147476153/220-40-55-24"
  },
  "r866": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "220",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147476153/220-40-55-4"
  },
  "r867": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480738/235-10-S50-1"
  },
  "r868": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.4-08(m)(1)(ii)(A))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480678/235-10-S99-1"
  },
  "r869": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "52",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482635/260-10-55-52"
  },
  "r870": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "275",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "6",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482836/275-10-55-6"
  },
  "r871": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "30",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-30"
  },
  "r872": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "31",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-31"
  },
  "r873": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "47",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482785/280-10-55-47"
  },
  "r874": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "48",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482785/280-10-55-48"
  },
  "r875": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "49",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482785/280-10-55-49"
  },
  "r876": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "54",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482785/280-10-55-54"
  },
  "r877": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481933/310-10-55-12A"
  },
  "r878": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "10",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-10"
  },
  "r879": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r880": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r881": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r882": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(b)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r883": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(b)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r884": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(b)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r885": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(b)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r886": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(c)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r887": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r888": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(d)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r889": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(d)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r890": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(d)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r891": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(d)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r892": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(e)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r893": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Subparagraph": "(e)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-12"
  },
  "r894": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "15",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-15"
  },
  "r895": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "15",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-15"
  },
  "r896": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "15",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-15"
  },
  "r897": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "15",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-15"
  },
  "r898": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "79",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-79"
  },
  "r899": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "80",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-80"
  },
  "r900": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "326",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "8",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479081/326-30-55-8"
  },
  "r901": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "24",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482548/350-20-55-24"
  },
  "r902": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "460",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "27",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482395/460-10-55-27"
  },
  "r903": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "470",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "69B",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481568/470-20-55-69B"
  },
  "r904": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "470",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "69C",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481568/470-20-55-69C"
  },
  "r905": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "480",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "64",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481620/480-10-55-64"
  },
  "r906": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "505",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481112/505-10-50-13"
  },
  "r907": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r908": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(iv)(01)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r909": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(c)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r910": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(c)(iv)(01)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r911": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "17",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480482/715-20-55-17"
  },
  "r912": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "18",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480482/715-20-55-18"
  },
  "r913": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "715",
   "SubTopic": "80",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "11",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480576/715-80-50-11"
  },
  "r914": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "715",
   "SubTopic": "80",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480576/715-80-50-6"
  },
  "r915": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "715",
   "SubTopic": "80",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "8",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480547/715-80-55-8"
  },
  "r916": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r917": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "718",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "20",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480459/718-40-55-20"
  },
  "r918": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "718",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "9",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480459/718-40-55-9"
  },
  "r919": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "231",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482663/740-10-55-231"
  },
  "r920": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "8",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-8"
  },
  "r921": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "39",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479303/805-10-55-39"
  },
  "r922": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "41",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479303/805-10-55-41"
  },
  "r923": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "42",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479303/805-10-55-42"
  },
  "r924": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "43",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479303/805-10-55-43"
  },
  "r925": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "47",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479303/805-10-55-47"
  },
  "r926": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "14",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-14"
  },
  "r927": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "14",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-14"
  },
  "r928": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "14",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-14"
  },
  "r929": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "14",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-14"
  },
  "r930": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "14",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-14"
  },
  "r931": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "20",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-20"
  },
  "r932": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "20",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-20"
  },
  "r933": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "20",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-20"
  },
  "r934": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "20",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-20"
  },
  "r935": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "29",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-29"
  },
  "r936": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "29",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-29"
  },
  "r937": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "31",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-31"
  },
  "r938": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "31",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-31"
  },
  "r939": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "31",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-31"
  },
  "r940": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "31",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-31"
  },
  "r941": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "31",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-31"
  },
  "r942": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "31",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-31"
  },
  "r943": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "31",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-31"
  },
  "r944": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "31",
   "Subparagraph": "(g)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-31"
  },
  "r945": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "31",
   "Subparagraph": "(h)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-31"
  },
  "r946": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "31",
   "Subparagraph": "(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-31"
  },
  "r947": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "38",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-38"
  },
  "r948": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "38",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-38"
  },
  "r949": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "38",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-38"
  },
  "r950": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "38",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-38"
  },
  "r951": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "38",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-38"
  },
  "r952": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "38",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479876/805-20-55-38"
  },
  "r953": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-1"
  },
  "r954": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-2"
  },
  "r955": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "805",
   "SubTopic": "740",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "13",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478064/805-740-55-13"
  },
  "r956": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "810",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(bb)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481203/810-10-50-3"
  },
  "r957": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "810",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "4J",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481175/810-10-55-4J"
  },
  "r958": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "810",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "4K",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481175/810-10-55-4K"
  },
  "r959": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "181",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480401/815-10-55-181"
  },
  "r960": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "182",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480401/815-10-55-182"
  },
  "r961": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "183",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480401/815-10-55-183"
  },
  "r962": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "184",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480401/815-10-55-184"
  },
  "r963": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "185",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480401/815-10-55-185"
  },
  "r964": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "100",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482078/820-10-55-100"
  },
  "r965": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "100",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482078/820-10-55-100"
  },
  "r966": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "101",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482078/820-10-55-101"
  },
  "r967": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "103",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482078/820-10-55-103"
  },
  "r968": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "107",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482078/820-10-55-107"
  },
  "r969": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "107",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482078/820-10-55-107"
  },
  "r970": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "107",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482078/820-10-55-107"
  },
  "r971": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "107",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482078/820-10-55-107"
  },
  "r972": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "107",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482078/820-10-55-107"
  },
  "r973": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "107",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482078/820-10-55-107"
  },
  "r974": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482881/825-10-55-12"
  },
  "r975": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "852",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "10",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481372/852-10-55-10"
  },
  "r976": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "860",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1A",
   "Subparagraph": "(b)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481420/860-30-50-1A"
  },
  "r977": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "860",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481395/860-30-55-4"
  },
  "r978": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "944",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "29F",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480046/944-40-55-29F"
  },
  "r979": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "944",
   "SubTopic": "605",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "11",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477548/944-605-55-11"
  },
  "r980": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "944",
   "SubTopic": "605",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "14",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477548/944-605-55-14"
  },
  "r981": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-1"
  },
  "r982": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-6"
  },
  "r983": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477439/946-210-55-1"
  },
  "r984": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "946",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477802/946-310-45-1"
  },
  "r985": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-12(Column A)(Footnote 2)(i))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-1"
  },
  "r986": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.12-12A(Column A)(Footnote 2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-2"
  },
  "r987": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.12-12B(Column A)(Footnote 1)(a))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-3"
  },
  "r988": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "5C",
   "Subparagraph": "(SX 210.12-13C(Column A)(Footnote 1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-5C"
  },
  "r989": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "5C",
   "Subparagraph": "(SX 210.12-13C(Column B)(Footnote 1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-5C"
  },
  "r990": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "946",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "6",
   "Subparagraph": "(SX 210.12-14(Column A)(Footnote 2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477271/946-320-S99-6"
  },
  "r991": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "946",
   "SubTopic": "830",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "10",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479168/946-830-55-10"
  },
  "r992": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "946",
   "SubTopic": "830",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "11",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479168/946-830-55-11"
  },
  "r993": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "946",
   "SubTopic": "830",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479168/946-830-55-12"
  },
  "r994": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "948",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "S50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478322/948-310-S50-2"
  },
  "r995": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "948",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-29(Column A)(Footnote 4))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479628/948-310-S99-1"
  },
  "r996": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "948",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-29(Column B))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479628/948-310-S99-1"
  },
  "r997": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Topic": "948",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-29(Column C))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479628/948-310-S99-1"
  },
  "r998": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "b"
  },
  "r999": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r1000": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "d1-1"
  },
  "r1001": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 10-Q",
   "Number": "240",
   "Section": "308",
   "Subsection": "a"
  },
  "r1002": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16",
   "Subsection": "J",
   "Paragraph": "a"
  },
  "r1003": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1"
  },
  "r1004": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i"
  },
  "r1005": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "A"
  },
  "r1006": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "B"
  },
  "r1007": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "C"
  },
  "r1008": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "D"
  },
  "r1009": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "E"
  },
  "r1010": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "ii"
  },
  "r1011": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "iii"
  },
  "r1012": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "2"
  },
  "r1013": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a"
  },
  "r1014": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1"
  },
  "r1015": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "i"
  },
  "r1016": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "ii"
  },
  "r1017": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "iii"
  },
  "r1018": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "iv"
  },
  "r1019": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "v"
  },
  "r1020": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "2"
  },
  "r1021": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "3"
  },
  "r1022": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "b"
  },
  "r1023": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a"
  },
  "r1024": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1"
  },
  "r1025": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "i"
  },
  "r1026": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "ii"
  },
  "r1027": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "iii"
  },
  "r1028": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "iv"
  },
  "r1029": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "v"
  },
  "r1030": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "2"
  },
  "r1031": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "3"
  },
  "r1032": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "b"
  },
  "r1033": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Forms 10-K, 10-Q, 20-F",
   "Number": "240",
   "Section": "13",
   "Subsection": "a-1"
  },
  "r1034": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v"
  },
  "r1035": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "1"
  },
  "r1036": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "ii"
  },
  "r1037": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii"
  },
  "r1038": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "B",
   "Clause": "1",
   "Subclause": "ii"
  },
  "r1039": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "i"
  },
  "r1040": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "ii"
  },
  "r1041": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "iii"
  },
  "r1042": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "iv"
  },
  "r1043": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "v"
  },
  "r1044": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "vi"
  },
  "r1045": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iv"
  },
  "r1046": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "vi"
  },
  "r1047": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "3"
  },
  "r1048": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "4"
  },
  "r1049": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "5",
   "Subparagraph": "i"
  },
  "r1050": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "5",
   "Subparagraph": "ii"
  },
  "r1051": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "5",
   "Subparagraph": "iii"
  },
  "r1052": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "5",
   "Subparagraph": "iv"
  },
  "r1053": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "6"
  },
  "r1054": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "6",
   "Subparagraph": "i"
  },
  "r1055": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1"
  },
  "r1056": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i"
  },
  "r1057": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "A"
  },
  "r1058": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "B"
  },
  "r1059": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "C"
  },
  "r1060": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "D"
  },
  "r1061": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "E"
  },
  "r1062": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "ii"
  },
  "r1063": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "iii"
  },
  "r1064": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "2"
  },
  "r1065": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "1"
  },
  "r1066": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2"
  },
  "r1067": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "A"
  },
  "r1068": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "C"
  },
  "r1069": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "D"
  },
  "r1070": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "E"
  },
  "r1071": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "F"
  },
  "r1072": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a"
  },
  "r1073": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "1"
  },
  "r1074": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "2",
   "Subparagraph": "A"
  },
  "r1075": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "2",
   "Subparagraph": "B"
  },
  "r1076": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "2",
   "Subparagraph": "C"
  },
  "r1077": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "2",
   "Subparagraph": "D"
  },
  "r1078": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "b",
   "Paragraph": "1"
  },
  "r1079": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "402",
   "Number": "229",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1"
  },
  "r1080": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "A",
   "Number": "229"
  },
  "r1081": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "B",
   "Clause": "1",
   "Number": "229"
  },
  "r1082": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "B",
   "Clause": "1",
   "Subclause": "i",
   "Number": "229"
  },
  "r1083": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-T",
   "Number": "232",
   "Section": "405"
  },
  "r1084": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Securities Act",
   "Number": "7A",
   "Section": "B",
   "Subsection": "2"
  },
  "r1085": {
   "role": "http://www.xbrl.org/2003/role/recommendedDisclosureRef",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "SubTopic": "20",
   "Topic": "310",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481569/310-20-50-3"
  },
  "r1086": {
   "role": "http://www.xbrl.org/2003/role/recommendedDisclosureRef",
   "Topic": "450",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "10",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483076/450-20-50-10"
  },
  "r1087": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "25",
   "Subparagraph": "(a)",
   "SubTopic": "10",
   "Topic": "810",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481231/810-10-45-25"
  },
  "r1088": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(iv)(02)(B)",
   "SubTopic": "20",
   "Topic": "715",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1089": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)(1)",
   "SubTopic": "310",
   "Topic": "944",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477363/944-310-50-3"
  },
  "r1090": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1402",
   "Paragraph": "a",
   "Publisher": "SEC"
  },
  "r1091": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1402",
   "Paragraph": "b",
   "Subparagraph": "(1)",
   "Publisher": "SEC"
  },
  "r1092": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1402",
   "Paragraph": "b",
   "Subparagraph": "(2)",
   "Publisher": "SEC"
  },
  "r1093": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1402",
   "Paragraph": "b",
   "Subparagraph": "(3)",
   "Publisher": "SEC"
  },
  "r1094": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1402",
   "Paragraph": "c",
   "Subparagraph": "(2)(i)",
   "Publisher": "SEC"
  },
  "r1095": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1402",
   "Paragraph": "c",
   "Subparagraph": "(2)(ii)",
   "Publisher": "SEC"
  },
  "r1096": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1402",
   "Paragraph": "c",
   "Subparagraph": "(2)(iii)",
   "Publisher": "SEC"
  },
  "r1097": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1405",
   "Paragraph": "a",
   "Subparagraph": "(1)",
   "Publisher": "SEC"
  },
  "r1098": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1405",
   "Paragraph": "a",
   "Subparagraph": "(2)",
   "Publisher": "SEC"
  },
  "r1099": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1405",
   "Paragraph": "a",
   "Subparagraph": "(3)",
   "Publisher": "SEC"
  },
  "r1100": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "28",
   "Paragraph": "Column A",
   "Footnote": "2",
   "Publisher": "SEC"
  },
  "r1101": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "29",
   "Paragraph": "Column A",
   "Footnote": "4",
   "Publisher": "SEC"
  },
  "r1102": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "29",
   "Paragraph": "Column B",
   "Publisher": "SEC"
  },
  "r1103": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "29",
   "Paragraph": "Column C",
   "Publisher": "SEC"
  },
  "r1104": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "13",
   "Subsection": "01",
   "Paragraph": "a",
   "Subparagraph": "(4)(i)",
   "Publisher": "SEC"
  },
  "r1105": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "13",
   "Subsection": "01",
   "Paragraph": "a",
   "Subparagraph": "(4)(iv)",
   "Publisher": "SEC"
  },
  "r1106": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "13",
   "Subsection": "02",
   "Paragraph": "a",
   "Subparagraph": "(4)(iv)",
   "Publisher": "SEC"
  },
  "r1107": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "210",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.5-02(3)(a)(4))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480566/210-10-S99-1"
  },
  "r1108": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483466/210-20-50-3"
  },
  "r1109": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483466/210-20-50-3"
  },
  "r1110": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483466/210-20-50-3"
  },
  "r1111": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(d)(1)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483466/210-20-50-3"
  },
  "r1112": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(d)(1)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483466/210-20-50-3"
  },
  "r1113": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(d)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483466/210-20-50-3"
  },
  "r1114": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483466/210-20-50-3"
  },
  "r1115": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "10",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483444/210-20-55-10"
  },
  "r1116": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "210",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "12",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483444/210-20-55-12"
  },
  "r1117": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "14",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482790/220-10-45-14"
  },
  "r1118": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482765/220-10-50-4"
  },
  "r1119": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482765/220-10-50-5"
  },
  "r1120": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482765/220-10-50-6"
  },
  "r1121": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.5-03(2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483621/220-10-S99-2"
  },
  "r1122": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "220",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "2",
   "Subparagraph": "(SX 210.5-03(4))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483621/220-10-S99-2"
  },
  "r1123": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "12",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-12"
  },
  "r1124": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "14",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-14"
  },
  "r1125": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "15",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-15"
  },
  "r1126": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "16",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-16"
  },
  "r1127": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "21",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-21"
  },
  "r1128": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "28",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-28"
  },
  "r1129": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "28",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482740/230-10-45-28"
  },
  "r1130": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "230",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482913/230-10-50-2A"
  },
  "r1131": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480738/235-10-S50-1"
  },
  "r1132": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.4-08(b))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480678/235-10-S99-1"
  },
  "r1133": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.4-08(g)(1)(i))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480678/235-10-S99-1"
  },
  "r1134": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.4-08(g)(1)(ii))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480678/235-10-S99-1"
  },
  "r1135": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "235",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.4-08(h)(1)(Note 1))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480678/235-10-S99-1"
  },
  "r1136": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "23",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483421/250-10-45-23"
  },
  "r1137": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "24",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483421/250-10-45-24"
  },
  "r1138": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "5",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483421/250-10-45-5"
  },
  "r1139": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "250",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483443/250-10-50-6"
  },
  "r1140": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482662/260-10-50-1"
  },
  "r1141": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "260",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482662/260-10-50-1"
  },
  "r1142": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "270",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482964/270-10-50-1"
  },
  "r1143": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "18",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-18"
  },
  "r1144": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "22",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-22"
  },
  "r1145": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "30",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-30"
  },
  "r1146": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "32",
   "Subparagraph": "(ee)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-32"
  },
  "r1147": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "280",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "32",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482810/280-10-50-32"
  },
  "r1148": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/310-10/tableOfContent"
  },
  "r1149": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481990/310-10-45-2"
  },
  "r1150": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "310",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481962/310-10-50-4"
  },
  "r1151": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "310",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "35",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481655/310-20-35-2"
  },
  "r1152": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "310",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "40",
   "Paragraph": "7",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481628/310-20-40-7"
  },
  "r1153": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "310",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481598/310-20-45-1"
  },
  "r1154": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "11",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481830/320-10-45-11"
  },
  "r1155": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-2"
  },
  "r1156": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-2"
  },
  "r1157": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-2"
  },
  "r1158": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-2"
  },
  "r1159": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-3"
  },
  "r1160": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-3"
  },
  "r1161": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-3"
  },
  "r1162": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-3"
  },
  "r1163": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-3"
  },
  "r1164": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5"
  },
  "r1165": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5"
  },
  "r1166": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5B",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-5B"
  },
  "r1167": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "320",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "9",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481800/320-10-50-9"
  },
  "r1168": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "321",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479536/321-10-50-3"
  },
  "r1169": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "321",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479536/321-10-50-3"
  },
  "r1170": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "321",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479536/321-10-50-3"
  },
  "r1171": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "323",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481687/323-10-50-3"
  },
  "r1172": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "325",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "35",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481551/325-30-35-2"
  },
  "r1173": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479344/326-20-45-1"
  },
  "r1174": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "11",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-11"
  },
  "r1175": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r1176": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r1177": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r1178": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r1179": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r1180": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r1181": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-13"
  },
  "r1182": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "14",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-14"
  },
  "r1183": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-5"
  },
  "r1184": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479319/326-20-50-5"
  },
  "r1185": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "15",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-15"
  },
  "r1186": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "55",
   "Paragraph": "15",
   "Subparagraph": "(g)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479294/326-20-55-15"
  },
  "r1187": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479130/326-30-45-1"
  },
  "r1188": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "326",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479106/326-30-50-4"
  },
  "r1189": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480265/350-10-S45-1"
  },
  "r1190": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/350-20/tableOfContent"
  },
  "r1191": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-1"
  },
  "r1192": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-1"
  },
  "r1193": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-1"
  },
  "r1194": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-1"
  },
  "r1195": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-1"
  },
  "r1196": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-1"
  },
  "r1197": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-1"
  },
  "r1198": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(g)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-1"
  },
  "r1199": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(h)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-1"
  },
  "r1200": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-1A"
  },
  "r1201": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482573/350-20-50-2"
  },
  "r1202": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/350-30/tableOfContent"
  },
  "r1203": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482686/350-30-45-1"
  },
  "r1204": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-1"
  },
  "r1205": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-1"
  },
  "r1206": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-1"
  },
  "r1207": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-1"
  },
  "r1208": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-1"
  },
  "r1209": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-2"
  },
  "r1210": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-2"
  },
  "r1211": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-2"
  },
  "r1212": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "350",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482665/350-30-50-2"
  },
  "r1213": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "405",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/405-30/tableOfContent"
  },
  "r1214": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "410",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "10",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481931/410-30-50-10"
  },
  "r1215": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "450",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/450/tableOfContent"
  },
  "r1216": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "450",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483076/450-20-50-4"
  },
  "r1217": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "450",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "9",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147483076/450-20-50-9"
  },
  "r1218": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "460",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482425/460-10-50-3"
  },
  "r1219": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1A",
   "Subparagraph": "(SX 210.13-01(a)(4)(i))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1A"
  },
  "r1220": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1A",
   "Subparagraph": "(SX 210.13-01(a)(4)(ii))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1A"
  },
  "r1221": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1A",
   "Subparagraph": "(SX 210.13-01(a)(4)(iii))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1A"
  },
  "r1222": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1A",
   "Subparagraph": "(SX 210.13-01(a)(4)(iv))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1A"
  },
  "r1223": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "470",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1B",
   "Subparagraph": "(SX 210.13-02(a)(4)(iv))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480097/470-10-S99-1B"
  },
  "r1224": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "470",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1B",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481139/470-20-50-1B"
  },
  "r1225": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1226": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1227": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(10)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1228": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1229": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1230": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1231": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(5)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1232": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(6)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1233": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(7)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1234": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(8)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1235": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)(9)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1236": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1237": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1238": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1239": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1240": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1241": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(5)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1242": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(6)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1243": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(7)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1244": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)(8)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1245": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1246": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1247": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1248": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(iv)(01)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1249": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(iv)(02)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1250": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(iv)(02)(A)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1251": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(iv)(02)(C)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1252": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)(iv)(03)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1253": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1254": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1255": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(g)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1256": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(h)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1257": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(h)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1258": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(h)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1259": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(h)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1260": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(h)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1261": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(h)(5)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1262": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(h)(6)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1263": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(h)(7)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1264": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1265": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(j)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1266": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(k)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1267": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(k)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1268": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(k)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1269": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(k)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1270": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(n)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1271": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(q)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-1"
  },
  "r1272": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-2"
  },
  "r1273": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-3"
  },
  "r1274": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-3"
  },
  "r1275": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "5",
   "Subparagraph": "(c)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-5"
  },
  "r1276": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-6"
  },
  "r1277": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-6"
  },
  "r1278": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-6"
  },
  "r1279": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-6"
  },
  "r1280": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(4)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-6"
  },
  "r1281": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(5)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-6"
  },
  "r1282": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(6)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-6"
  },
  "r1283": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(7)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-6"
  },
  "r1284": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-6"
  },
  "r1285": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "715",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "8",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480506/715-20-50-8"
  },
  "r1286": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1287": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1288": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1289": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1290": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1291": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(iii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1292": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(iv)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1293": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(iv)(01)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1294": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(iv)(02)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1295": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(iv)(03)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1296": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)(iv)(04)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1297": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1298": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1299": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)(iii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1300": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)(iii)(01)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1301": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)(iii)(02)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1302": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)(iii)(03)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1303": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1304": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1305": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(e)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1306": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(e)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1307": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(f)(2)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1308": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(f)(2)(ii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1309": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(f)(2)(iii)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1310": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(f)(2)(iv)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1311": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(f)(2)(v)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480429/718-10-50-2"
  },
  "r1312": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "25",
   "Paragraph": "9",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480637/718-40-25-9"
  },
  "r1313": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480520/718-40-45-3"
  },
  "r1314": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480489/718-40-50-1"
  },
  "r1315": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "718",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480489/718-40-50-1"
  },
  "r1316": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "23",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482685/740-10-50-23"
  },
  "r1317": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "740",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482685/740-10-50-3"
  },
  "r1318": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(g)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-2"
  },
  "r1319": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "805",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479328/805-10-50-7"
  },
  "r1320": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-1"
  },
  "r1321": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "805",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479907/805-20-50-1"
  },
  "r1322": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "805",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479581/805-30-50-4"
  },
  "r1323": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1A",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-1A"
  },
  "r1324": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-1B"
  },
  "r1325": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4A"
  },
  "r1326": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4A",
   "Subparagraph": "(b)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4A"
  },
  "r1327": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4B",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4B"
  },
  "r1328": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4B",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4B"
  },
  "r1329": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4CC",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4CC"
  },
  "r1330": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4D",
   "Subparagraph": "(a)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4D"
  },
  "r1331": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4E",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-4E"
  },
  "r1332": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-7A"
  },
  "r1333": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "8",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-8"
  },
  "r1334": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "8",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-8"
  },
  "r1335": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "8",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480434/815-10-50-8"
  },
  "r1336": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480870/815-30-50-2"
  },
  "r1337": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "815",
   "SubTopic": "40",
   "Name": "Accounting Standards Codification",
   "Section": "65",
   "Paragraph": "1",
   "Subparagraph": "(e)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480175/815-40-65-1"
  },
  "r1338": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "35",
   "Paragraph": "54B",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482134/820-10-35-54B"
  },
  "r1339": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r1340": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r1341": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(bbb)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r1342": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(bbb)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r1343": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(bbb)(2)(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r1344": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r1345": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r1346": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(1a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r1347": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r1348": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(c)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r1349": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(d)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2"
  },
  "r1350": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2E",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-2E"
  },
  "r1351": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-3"
  },
  "r1352": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-3"
  },
  "r1353": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "820",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6A",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482106/820-10-50-6A"
  },
  "r1354": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "10",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-10"
  },
  "r1355": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "11",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-11"
  },
  "r1356": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "11",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-11"
  },
  "r1357": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "11",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-11"
  },
  "r1358": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "13",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-13"
  },
  "r1359": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "28",
   "Subparagraph": "(c)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-28"
  },
  "r1360": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "825",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "28",
   "Subparagraph": "(f)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147482907/825-10-50-28"
  },
  "r1361": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "830",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "20",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481694/830-30-45-20"
  },
  "r1362": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "830",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481674/830-30-50-1"
  },
  "r1363": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "852",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481404/852-10-50-7"
  },
  "r1364": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "852",
   "SubTopic": "10",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "7",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481404/852-10-50-7"
  },
  "r1365": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-3"
  },
  "r1366": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-3"
  },
  "r1367": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(c)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-3"
  },
  "r1368": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(b)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-4"
  },
  "r1369": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(b)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-4"
  },
  "r1370": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "860",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "4",
   "Subparagraph": "(b)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481326/860-20-50-4"
  },
  "r1371": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "860",
   "SubTopic": "30",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1A",
   "Subparagraph": "(b)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481420/860-30-50-1A"
  },
  "r1372": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "940",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/940-320/tableOfContent"
  },
  "r1373": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "942",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.9-03(10))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478546/942-210-S99-1"
  },
  "r1374": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "942",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477268/942-320-50-2"
  },
  "r1375": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "942",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477268/942-320-50-3"
  },
  "r1376": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "942",
   "SubTopic": "320",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3A",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477268/942-320-50-3A"
  },
  "r1377": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "942",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(c)(1)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477270/942-505-50-1"
  },
  "r1378": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "942",
   "SubTopic": "505",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477270/942-505-50-1B"
  },
  "r1379": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "942",
   "SubTopic": "825",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478898/942-825-50-1"
  },
  "r1380": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "944",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.7-03(a)(15)(a))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478777/944-210-S99-1"
  },
  "r1381": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "944",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "3",
   "Subparagraph": "(a)(2)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477363/944-310-50-3"
  },
  "r1382": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "944",
   "SubTopic": "80",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "1",
   "Subparagraph": "(e)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480109/944-80-50-1"
  },
  "r1383": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "946",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "15",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480990/946-20-50-15"
  },
  "r1384": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "946",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "16",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147480990/946-20-50-16"
  },
  "r1385": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "946",
   "SubTopic": "205",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "4",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478009/946-205-45-4"
  },
  "r1386": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "6",
   "Subparagraph": "(a)(3)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478795/946-210-50-6"
  },
  "r1387": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "946",
   "SubTopic": "210",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.6-04(18))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479170/946-210-S99-1"
  },
  "r1388": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "3",
   "Subparagraph": "(b)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479105/946-220-45-3"
  },
  "r1389": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "3",
   "Subparagraph": "(i)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479105/946-220-45-3"
  },
  "r1390": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.6-09(4)(b))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-3"
  },
  "r1391": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "946",
   "SubTopic": "220",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "3",
   "Subparagraph": "(SX 210.6-09(7))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479134/946-220-S99-3"
  },
  "r1392": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "946",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "1",
   "Subparagraph": "(a)",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477802/946-310-45-1"
  },
  "r1393": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "946",
   "SubTopic": "830",
   "Name": "Accounting Standards Codification",
   "Section": "45",
   "Paragraph": "39",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147477346/946-830-45-39"
  },
  "r1394": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "948",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "S50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478322/948-310-S50-2"
  },
  "r1395": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "948",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-29(Column A)(Footnote 4))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479628/948-310-S99-1"
  },
  "r1396": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "948",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-29(Column B))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479628/948-310-S99-1"
  },
  "r1397": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "948",
   "SubTopic": "310",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-29(Column C))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147479628/948-310-S99-1"
  },
  "r1398": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "970",
   "SubTopic": "360",
   "Name": "Accounting Standards Codification",
   "Section": "S99",
   "Paragraph": "1",
   "Subparagraph": "(SX 210.12-28(Column A)(Footnote 2))",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147478979/970-360-S99-1"
  },
  "r1399": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Topic": "985",
   "SubTopic": "20",
   "Name": "Accounting Standards Codification",
   "Section": "50",
   "Paragraph": "2",
   "Publisher": "FASB",
   "URI": "https://asc.fasb.org/1943274/2147481283/985-20-50-2"
  }
 }
}
