3.25.4 html 449 629 1 false 98 0 false 13 false false R1.htm 0000001 - Document - Document and Entity Information Sheet http://www.heritagecommercecorp.com/role/DocumentandEntityInformation Document and Entity Information Cover 1 false false R2.htm 0000002 - Document - Audit Information Sheet http://www.heritagecommercecorp.com/role/AuditInformation Audit Information Cover 2 false false R3.htm 9952151 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://www.heritagecommercecorp.com/role/CONSOLIDATEDBALANCESHEETS CONSOLIDATED BALANCE SHEETS Statements 3 false false R4.htm 9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.heritagecommercecorp.com/role/CONSOLIDATEDBALANCESHEETSParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 4 false false R5.htm 9952153 - Statement - CONSOLIDATED STATEMENTS OF INCOME Sheet http://www.heritagecommercecorp.com/role/CONSOLIDATEDSTATEMENTSOFINCOME CONSOLIDATED STATEMENTS OF INCOME Statements 5 false false R6.htm 9952154 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Sheet http://www.heritagecommercecorp.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Statements 6 false false R7.htm 9952155 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY Sheet http://www.heritagecommercecorp.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSHAREHOLDERSEQUITY CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY Statements 7 false false R8.htm 9952156 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) Sheet http://www.heritagecommercecorp.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSHAREHOLDERSEQUITYParenthetical CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) Statements 8 false false R9.htm 9952157 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.heritagecommercecorp.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 9 false false R10.htm 9952158 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.heritagecommercecorp.com/role/SummaryofSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 10 false false R11.htm 9952159 - Disclosure - Accumulated Other Comprehensive Income (''AOCI") Sheet http://www.heritagecommercecorp.com/role/AccumulatedOtherComprehensiveIncomeAOCI Accumulated Other Comprehensive Income (''AOCI") Notes 11 false false R12.htm 9952160 - Disclosure - Securities Sheet http://www.heritagecommercecorp.com/role/Securities Securities Notes 12 false false R13.htm 9952161 - Disclosure - Loans and Allowance for Credit Losses on Loans Sheet http://www.heritagecommercecorp.com/role/LoansandAllowanceforCreditLossesonLoans Loans and Allowance for Credit Losses on Loans Notes 13 false false R14.htm 9952162 - Disclosure - Loan Servicing Sheet http://www.heritagecommercecorp.com/role/LoanServicing Loan Servicing Notes 14 false false R15.htm 9952163 - Disclosure - Premises and Equipment Sheet http://www.heritagecommercecorp.com/role/PremisesandEquipment Premises and Equipment Notes 15 false false R16.htm 9952164 - Disclosure - Leases Sheet http://www.heritagecommercecorp.com/role/Leases Leases Notes 16 false false R17.htm 9952165 - Disclosure - Goodwill and Other Intangible Assets Sheet http://www.heritagecommercecorp.com/role/GoodwillandOtherIntangibleAssets Goodwill and Other Intangible Assets Notes 17 false false R18.htm 9952166 - Disclosure - Deposits Sheet http://www.heritagecommercecorp.com/role/Deposits Deposits Notes 18 false false R19.htm 9952167 - Disclosure - Borrowing Arrangements Sheet http://www.heritagecommercecorp.com/role/BorrowingArrangements Borrowing Arrangements Notes 19 false false R20.htm 9952168 - Disclosure - Income Taxes Sheet http://www.heritagecommercecorp.com/role/IncomeTaxes Income Taxes Notes 20 false false R21.htm 9952169 - Disclosure - Equity Plan Sheet http://www.heritagecommercecorp.com/role/EquityPlan Equity Plan Notes 21 false false R22.htm 9952170 - Disclosure - Benefit Plans Sheet http://www.heritagecommercecorp.com/role/BenefitPlans Benefit Plans Notes 22 false false R23.htm 9952171 - Disclosure - Fair Value Sheet http://www.heritagecommercecorp.com/role/FairValue Fair Value Notes 23 false false R24.htm 9952172 - Disclosure - Commitments and Contingencies Sheet http://www.heritagecommercecorp.com/role/CommitmentsandContingencies Commitments and Contingencies Notes 24 false false R25.htm 9952173 - Disclosure - Shareholders' Equity and Earnings Per Share Sheet http://www.heritagecommercecorp.com/role/ShareholdersEquityandEarningsPerShare Shareholders' Equity and Earnings Per Share Notes 25 false false R26.htm 9952174 - Disclosure - Capital Requirements Sheet http://www.heritagecommercecorp.com/role/CapitalRequirements Capital Requirements Notes 26 false false R27.htm 9952175 - Disclosure - Revenue Recognition Sheet http://www.heritagecommercecorp.com/role/RevenueRecognition Revenue Recognition Notes 27 false false R28.htm 9952176 - Disclosure - Noninterest Expense Sheet http://www.heritagecommercecorp.com/role/NoninterestExpense Noninterest Expense Notes 28 false false R29.htm 9952177 - Disclosure - Business Segment Information Sheet http://www.heritagecommercecorp.com/role/BusinessSegmentInformation Business Segment Information Notes 29 false false R30.htm 9952178 - Disclosure - Parent Company only Condensed Financial Information Sheet http://www.heritagecommercecorp.com/role/ParentCompanyonlyCondensedFinancialInformation Parent Company only Condensed Financial Information Notes 30 false false R31.htm 9952179 - Disclosure - Subsequent Events Sheet http://www.heritagecommercecorp.com/role/SubsequentEvents Subsequent Events Notes 31 false false R32.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 32 false false R33.htm 995447 - Disclosure - Insider Trading Policies and Procedures Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc Insider Trading Policies and Procedures Notes 33 false false R34.htm 995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure Sheet http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure Cybersecurity Risk Management and Strategy Disclosure Notes 34 false false R35.htm 9955511 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.heritagecommercecorp.com/role/SummaryofSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.heritagecommercecorp.com/role/SummaryofSignificantAccountingPolicies 35 false false R36.htm 9955512 - Disclosure - Accumulated Other Comprehensive Income (''AOCI'') (Tables) Sheet http://www.heritagecommercecorp.com/role/AccumulatedOtherComprehensiveIncomeAOCITables Accumulated Other Comprehensive Income (''AOCI'') (Tables) Tables http://www.heritagecommercecorp.com/role/AccumulatedOtherComprehensiveIncomeAOCI 36 false false R37.htm 9955513 - Disclosure - Securities (Tables) Sheet http://www.heritagecommercecorp.com/role/SecuritiesTables Securities (Tables) Tables http://www.heritagecommercecorp.com/role/Securities 37 false false R38.htm 9955514 - Disclosure - Loans and Allowance for Credit Losses on Loans (Tables) Sheet http://www.heritagecommercecorp.com/role/LoansandAllowanceforCreditLossesonLoansTables Loans and Allowance for Credit Losses on Loans (Tables) Tables http://www.heritagecommercecorp.com/role/LoansandAllowanceforCreditLossesonLoans 38 false false R39.htm 9955515 - Disclosure - Loan Servicing (Tables) Sheet http://www.heritagecommercecorp.com/role/LoanServicingTables Loan Servicing (Tables) Tables http://www.heritagecommercecorp.com/role/LoanServicing 39 false false R40.htm 9955516 - Disclosure - Premises and Equipment (Tables) Sheet http://www.heritagecommercecorp.com/role/PremisesandEquipmentTables Premises and Equipment (Tables) Tables http://www.heritagecommercecorp.com/role/PremisesandEquipment 40 false false R41.htm 9955517 - Disclosure - Leases (Tables) Sheet http://www.heritagecommercecorp.com/role/LeasesTables Leases (Tables) Tables http://www.heritagecommercecorp.com/role/Leases 41 false false R42.htm 9955518 - Disclosure - Goodwill and Other Intangible Assets (Tables) Sheet http://www.heritagecommercecorp.com/role/GoodwillandOtherIntangibleAssetsTables Goodwill and Other Intangible Assets (Tables) Tables http://www.heritagecommercecorp.com/role/GoodwillandOtherIntangibleAssets 42 false false R43.htm 9955519 - Disclosure - Deposits (Tables) Sheet http://www.heritagecommercecorp.com/role/DepositsTables Deposits (Tables) Tables http://www.heritagecommercecorp.com/role/Deposits 43 false false R44.htm 9955520 - Disclosure - Borrowing Arrangements (Tables) Sheet http://www.heritagecommercecorp.com/role/BorrowingArrangementsTables Borrowing Arrangements (Tables) Tables http://www.heritagecommercecorp.com/role/BorrowingArrangements 44 false false R45.htm 9955521 - Disclosure - Income Taxes (Tables) Sheet http://www.heritagecommercecorp.com/role/IncomeTaxesTables Income Taxes (Tables) Tables http://www.heritagecommercecorp.com/role/IncomeTaxes 45 false false R46.htm 9955522 - Disclosure - Equity Plan (Tables) Sheet http://www.heritagecommercecorp.com/role/EquityPlanTables Equity Plan (Tables) Tables http://www.heritagecommercecorp.com/role/EquityPlan 46 false false R47.htm 9955523 - Disclosure - Benefit Plans (Tables) Sheet http://www.heritagecommercecorp.com/role/BenefitPlansTables Benefit Plans (Tables) Tables http://www.heritagecommercecorp.com/role/BenefitPlans 47 false false R48.htm 9955524 - Disclosure - Fair Value (Tables) Sheet http://www.heritagecommercecorp.com/role/FairValueTables Fair Value (Tables) Tables http://www.heritagecommercecorp.com/role/FairValue 48 false false R49.htm 9955525 - Disclosure - Commitments and Contingencies (Tables) Sheet http://www.heritagecommercecorp.com/role/CommitmentsandContingenciesTables Commitments and Contingencies (Tables) Tables http://www.heritagecommercecorp.com/role/CommitmentsandContingencies 49 false false R50.htm 9955526 - Disclosure - Shareholders' Equity and Earnings Per Share (Tables) Sheet http://www.heritagecommercecorp.com/role/ShareholdersEquityandEarningsPerShareTables Shareholders' Equity and Earnings Per Share (Tables) Tables http://www.heritagecommercecorp.com/role/ShareholdersEquityandEarningsPerShare 50 false false R51.htm 9955527 - Disclosure - Capital Requirements (Tables) Sheet http://www.heritagecommercecorp.com/role/CapitalRequirementsTables Capital Requirements (Tables) Tables http://www.heritagecommercecorp.com/role/CapitalRequirements 51 false false R52.htm 9955528 - Disclosure - Revenue Recognition (Tables) Sheet http://www.heritagecommercecorp.com/role/RevenueRecognitionTables Revenue Recognition (Tables) Tables http://www.heritagecommercecorp.com/role/RevenueRecognition 52 false false R53.htm 9955529 - Disclosure - Noninterest Expense (Tables) Sheet http://www.heritagecommercecorp.com/role/NoninterestExpenseTables Noninterest Expense (Tables) Tables http://www.heritagecommercecorp.com/role/NoninterestExpense 53 false false R54.htm 9955530 - Disclosure - Business Segment Information (Tables) Sheet http://www.heritagecommercecorp.com/role/BusinessSegmentInformationTables Business Segment Information (Tables) Tables http://www.heritagecommercecorp.com/role/BusinessSegmentInformation 54 false false R55.htm 9955531 - Disclosure - Parent Company only Condensed Financial Information (Tables) Sheet http://www.heritagecommercecorp.com/role/ParentCompanyonlyCondensedFinancialInformationTables Parent Company only Condensed Financial Information (Tables) Tables http://www.heritagecommercecorp.com/role/ParentCompanyonlyCondensedFinancialInformation 55 false false R56.htm 9955532 - Disclosure - Summary of Significant Accounting Policies - Merger agreement with CVB Financial Corp (Details) Sheet http://www.heritagecommercecorp.com/role/SummaryofSignificantAccountingPoliciesMergeragreementwithCVBFinancialCorpDetails Summary of Significant Accounting Policies - Merger agreement with CVB Financial Corp (Details) Details 56 false false R57.htm 9955533 - Disclosure - Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) Sheet http://www.heritagecommercecorp.com/role/SummaryofSignificantAccountingPoliciesCashandCashEquivalentsDetails Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) Details 57 false false R58.htm 9955534 - Disclosure - Summary of Significant Accounting Policies - Allowance for Credit Losses on Loans (Details) Sheet http://www.heritagecommercecorp.com/role/SummaryofSignificantAccountingPoliciesAllowanceforCreditLossesonLoansDetails Summary of Significant Accounting Policies - Allowance for Credit Losses on Loans (Details) Details 58 false false R59.htm 9955535 - Disclosure - Summary of Significant Accounting Policies - Premises and Equipment (Details) Sheet http://www.heritagecommercecorp.com/role/SummaryofSignificantAccountingPoliciesPremisesandEquipmentDetails Summary of Significant Accounting Policies - Premises and Equipment (Details) Details 59 false false R60.htm 9955536 - Disclosure - Summary of Significant Accounting Policies - Goodwill and Other Intangible Assets (Details) Sheet http://www.heritagecommercecorp.com/role/SummaryofSignificantAccountingPoliciesGoodwillandOtherIntangibleAssetsDetails Summary of Significant Accounting Policies - Goodwill and Other Intangible Assets (Details) Details 60 false false R61.htm 9955537 - Disclosure - Summary of Significant Accounting Policies - Foreclosed Assets (Details) Sheet http://www.heritagecommercecorp.com/role/SummaryofSignificantAccountingPoliciesForeclosedAssetsDetails Summary of Significant Accounting Policies - Foreclosed Assets (Details) Details 61 false false R62.htm 9955538 - Disclosure - Summary of Significant Accounting Policies - Segment Reporting (Details) Sheet http://www.heritagecommercecorp.com/role/SummaryofSignificantAccountingPoliciesSegmentReportingDetails Summary of Significant Accounting Policies - Segment Reporting (Details) Details 62 false false R63.htm 9955539 - Disclosure - Accumulated Other Comprehensive Income (''AOCI '') - Schedule of Changes in AOCI by Component (Details) Sheet http://www.heritagecommercecorp.com/role/AccumulatedOtherComprehensiveIncomeAOCIScheduleofChangesinAOCIbyComponentDetails Accumulated Other Comprehensive Income (''AOCI '') - Schedule of Changes in AOCI by Component (Details) Details http://www.heritagecommercecorp.com/role/AccumulatedOtherComprehensiveIncomeAOCITables 63 false false R64.htm 9955540 - Disclosure - Accumulated Other Comprehensive Income (''AOCI'') - Schedule of Reclassifications out of AOCI into Net Income (Details) Sheet http://www.heritagecommercecorp.com/role/AccumulatedOtherComprehensiveIncomeAOCIScheduleofReclassificationsoutofAOCIintoNetIncomeDetails Accumulated Other Comprehensive Income (''AOCI'') - Schedule of Reclassifications out of AOCI into Net Income (Details) Details http://www.heritagecommercecorp.com/role/AccumulatedOtherComprehensiveIncomeAOCITables 64 false false R65.htm 9955541 - Disclosure - Securities - Schedule of Amortized Cost and Estimated Fair Value of Securities Available for Sale (Details) Sheet http://www.heritagecommercecorp.com/role/SecuritiesScheduleofAmortizedCostandEstimatedFairValueofSecuritiesAvailableforSaleDetails Securities - Schedule of Amortized Cost and Estimated Fair Value of Securities Available for Sale (Details) Details 65 false false R66.htm 9955542 - Disclosure - Securities - Schedule of Amortized Cost and Estimated Fair Value of Securities Held-to-Maturity (Details) Sheet http://www.heritagecommercecorp.com/role/SecuritiesScheduleofAmortizedCostandEstimatedFairValueofSecuritiesHeldtoMaturityDetails Securities - Schedule of Amortized Cost and Estimated Fair Value of Securities Held-to-Maturity (Details) Details 66 false false R67.htm 9955543 - Disclosure - Securities - Schedule of Unrealized Losses on Available for Sale Investments (Details) Sheet http://www.heritagecommercecorp.com/role/SecuritiesScheduleofUnrealizedLossesonAvailableforSaleInvestmentsDetails Securities - Schedule of Unrealized Losses on Available for Sale Investments (Details) Details 67 false false R68.htm 9955544 - Disclosure - Securities - Schedule of Unrealized Losses on Held-to-Maturity Investments (Details) Sheet http://www.heritagecommercecorp.com/role/SecuritiesScheduleofUnrealizedLossesonHeldtoMaturityInvestmentsDetails Securities - Schedule of Unrealized Losses on Held-to-Maturity Investments (Details) Details 68 false false R69.htm 9955545 - Disclosure - Securities - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/SecuritiesAdditionalInformationDetails Securities - Additional Information (Details) Details 69 false false R70.htm 9955546 - Disclosure - Securities - Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity - Securities Available-for-sale (Details) Sheet http://www.heritagecommercecorp.com/role/SecuritiesScheduleofAmortizedCostandFairValueofDebtSecuritiesbyContractualMaturitySecuritiesAvailableforsaleDetails Securities - Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity - Securities Available-for-sale (Details) Details 70 false false R71.htm 9955547 - Disclosure - Securities - Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity - Securities Held-to-maturity (Details) Sheet http://www.heritagecommercecorp.com/role/SecuritiesScheduleofAmortizedCostandFairValueofDebtSecuritiesbyContractualMaturitySecuritiesHeldtomaturityDetails Securities - Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity - Securities Held-to-maturity (Details) Details 71 false false R72.htm 9955548 - Disclosure - Securities - Schedule of Allowance for Credit Losses on Debt Securities Held-to-maturity (Details) Sheet http://www.heritagecommercecorp.com/role/SecuritiesScheduleofAllowanceforCreditLossesonDebtSecuritiesHeldtomaturityDetails Securities - Schedule of Allowance for Credit Losses on Debt Securities Held-to-maturity (Details) Details 72 false false R73.htm 9955549 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Loans (Details) Sheet http://www.heritagecommercecorp.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofLoansDetails Loans and Allowance for Credit Losses on Loans - Schedule of Loans (Details) Details 73 false false R74.htm 9955550 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Changes in Allowance for Loan (Credit) Losses (Details) Sheet http://www.heritagecommercecorp.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofChangesinAllowanceforLoanCreditLossesDetails Loans and Allowance for Credit Losses on Loans - Schedule of Changes in Allowance for Loan (Credit) Losses (Details) Details 74 false false R75.htm 9955551 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Nonaccrual Status and Loans Past Due Over 90 Days (Details) Sheet http://www.heritagecommercecorp.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofNonaccrualStatusandLoansPastDueOver90DaysDetails Loans and Allowance for Credit Losses on Loans - Schedule of Nonaccrual Status and Loans Past Due Over 90 Days (Details) Details 75 false false R76.htm 9955552 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Aging of Past Due Loans by Class of Loans (Details) Sheet http://www.heritagecommercecorp.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofAgingofPastDueLoansbyClassofLoansDetails Loans and Allowance for Credit Losses on Loans - Schedule of Aging of Past Due Loans by Class of Loans (Details) Details 76 false false R77.htm 9955553 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Past Due Loans on Nonaccrual and Current Loans on Nonaccrual (Details) Sheet http://www.heritagecommercecorp.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofPastDueLoansonNonaccrualandCurrentLoansonNonaccrualDetails Loans and Allowance for Credit Losses on Loans - Schedule of Past Due Loans on Nonaccrual and Current Loans on Nonaccrual (Details) Details 77 false false R78.htm 9955554 - Disclosure - Loans and Allowance for Credit Losses on Loans - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/LoansandAllowanceforCreditLossesonLoansAdditionalInformationDetails Loans and Allowance for Credit Losses on Loans - Additional Information (Details) Details 78 false false R79.htm 9955555 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Credit Quality Indicators (Details) Sheet http://www.heritagecommercecorp.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofCreditQualityIndicatorsDetails Loans and Allowance for Credit Losses on Loans - Schedule of Credit Quality Indicators (Details) Details 79 false false R80.htm 9955556 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Gross charge-offs by year of origination and revolving loans (Details) Sheet http://www.heritagecommercecorp.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofGrosschargeoffsbyyearoforiginationandrevolvingloansDetails Loans and Allowance for Credit Losses on Loans - Schedule of Gross charge-offs by year of origination and revolving loans (Details) Details 80 false false R81.htm 9955557 - Disclosure - Loan Servicing - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/LoanServicingAdditionalInformationDetails Loan Servicing - Additional Information (Details) Details 81 false false R82.htm 9955558 - Disclosure - Loan Servicing - Schedule of Activity for Loan Servicing Rights (Details) Sheet http://www.heritagecommercecorp.com/role/LoanServicingScheduleofActivityforLoanServicingRightsDetails Loan Servicing - Schedule of Activity for Loan Servicing Rights (Details) Details 82 false false R83.htm 9955559 - Disclosure - Loan Servicing - Schedule of Activity for I/O Strip Receivables (Details) Sheet http://www.heritagecommercecorp.com/role/LoanServicingScheduleofActivityforIOStripReceivablesDetails Loan Servicing - Schedule of Activity for I/O Strip Receivables (Details) Details 83 false false R84.htm 9955560 - Disclosure - Premises and Equipment - Schedule of Premises and Equipment (Details) Sheet http://www.heritagecommercecorp.com/role/PremisesandEquipmentScheduleofPremisesandEquipmentDetails Premises and Equipment - Schedule of Premises and Equipment (Details) Details 84 false false R85.htm 9955561 - Disclosure - Premises and Equipment - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/PremisesandEquipmentAdditionalInformationDetails Premises and Equipment - Additional Information (Details) Details 85 false false R86.htm 9955562 - Disclosure - Leases - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/LeasesAdditionalInformationDetails Leases - Additional Information (Details) Details 86 false false R87.htm 9955563 - Disclosure - Leases - Schedule of Quantitative Information for the Company's Leases (Details) Sheet http://www.heritagecommercecorp.com/role/LeasesScheduleofQuantitativeInformationfortheCompanysLeasesDetails Leases - Schedule of Quantitative Information for the Company's Leases (Details) Details 87 false false R88.htm 9955564 - Disclosure - Leases - Schedule of Maturity Analysis Shows the Undiscounted Cash Flows Due on the Company's Operating Lease Liabilities (Details) Sheet http://www.heritagecommercecorp.com/role/LeasesScheduleofMaturityAnalysisShowstheUndiscountedCashFlowsDueontheCompanysOperatingLeaseLiabilitiesDetails Leases - Schedule of Maturity Analysis Shows the Undiscounted Cash Flows Due on the Company's Operating Lease Liabilities (Details) Details 88 false false R89.htm 9955565 - Disclosure - Goodwill and Other Intangible Assets - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetails Goodwill and Other Intangible Assets - Additional Information (Details) Details 89 false false R90.htm 9955566 - Disclosure - Goodwill and Other Intangible Assets - Schedule of Carrying Amount of Goodwill by Segment (Details) Sheet http://www.heritagecommercecorp.com/role/GoodwillandOtherIntangibleAssetsScheduleofCarryingAmountofGoodwillbySegmentDetails Goodwill and Other Intangible Assets - Schedule of Carrying Amount of Goodwill by Segment (Details) Details 90 false false R91.htm 9955567 - Disclosure - Goodwill and Other Intangible Assets - Schedule of Company's Intangible Assets (Details) Sheet http://www.heritagecommercecorp.com/role/GoodwillandOtherIntangibleAssetsScheduleofCompanysIntangibleAssetsDetails Goodwill and Other Intangible Assets - Schedule of Company's Intangible Assets (Details) Details 91 false false R92.htm 9955568 - Disclosure - Goodwill and Other Intangible Assets - Schedule of Estimated Amortization Expense (Details) Sheet http://www.heritagecommercecorp.com/role/GoodwillandOtherIntangibleAssetsScheduleofEstimatedAmortizationExpenseDetails Goodwill and Other Intangible Assets - Schedule of Estimated Amortization Expense (Details) Details 92 false false R93.htm 9955569 - Disclosure - Deposits - Schedule of Maturities of Time Deposits (Details) Sheet http://www.heritagecommercecorp.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetails Deposits - Schedule of Maturities of Time Deposits (Details) Details 93 false false R94.htm 9955570 - Disclosure - Deposits - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/DepositsAdditionalInformationDetails Deposits - Additional Information (Details) Details 94 false false R95.htm 9955571 - Disclosure - Deposits - Schedule of Deposits Held by Entity Within ICS/CDARS Program (Details) Sheet http://www.heritagecommercecorp.com/role/DepositsScheduleofDepositsHeldbyEntityWithinICSCDARSProgramDetails Deposits - Schedule of Deposits Held by Entity Within ICS/CDARS Program (Details) Details 95 false false R96.htm 9955572 - Disclosure - Borrowing Arrangements - Schedule of Collateral Value of Loans and Securities Pledged (Details) Sheet http://www.heritagecommercecorp.com/role/BorrowingArrangementsScheduleofCollateralValueofLoansandSecuritiesPledgedDetails Borrowing Arrangements - Schedule of Collateral Value of Loans and Securities Pledged (Details) Details 96 false false R97.htm 9955573 - Disclosure - Borrowing Arrangements - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/BorrowingArrangementsAdditionalInformationDetails Borrowing Arrangements - Additional Information (Details) Details 97 false false R98.htm 9955574 - Disclosure - Income Taxes - Schedule of Income Tax Expense (Details) Sheet http://www.heritagecommercecorp.com/role/IncomeTaxesScheduleofIncomeTaxExpenseDetails Income Taxes - Schedule of Income Tax Expense (Details) Details 98 false false R99.htm 9955575 - Disclosure - Income Taxes - Schedule of Effective Tax Rate (Details) Sheet http://www.heritagecommercecorp.com/role/IncomeTaxesScheduleofEffectiveTaxRateDetails Income Taxes - Schedule of Effective Tax Rate (Details) Details 99 false false R100.htm 9955576 - Disclosure - Income Taxes - Schedule of Income Taxes Paid, Net of Refunds Received (Details) Sheet http://www.heritagecommercecorp.com/role/IncomeTaxesScheduleofIncomeTaxesPaidNetofRefundsReceivedDetails Income Taxes - Schedule of Income Taxes Paid, Net of Refunds Received (Details) Details 100 false false R101.htm 9955577 - Disclosure - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) Sheet http://www.heritagecommercecorp.com/role/IncomeTaxesScheduleofDeferredTaxAssetsandLiabilitiesDetails Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) Details 101 false false R102.htm 9955578 - Disclosure - Income Taxes - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/IncomeTaxesAdditionalInformationDetails Income Taxes - Additional Information (Details) Details 102 false false R103.htm 9955579 - Disclosure - Income Taxes - Schedule of Carrying Amount of Low Income Tax Housing Investment (Details) Sheet http://www.heritagecommercecorp.com/role/IncomeTaxesScheduleofCarryingAmountofLowIncomeTaxHousingInvestmentDetails Income Taxes - Schedule of Carrying Amount of Low Income Tax Housing Investment (Details) Details 103 false false R104.htm 9955580 - Disclosure - Equity Plan - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/EquityPlanAdditionalInformationDetails Equity Plan - Additional Information (Details) Details 104 false false R105.htm 9955581 - Disclosure - Equity Plan - Schedule of Stock Option Activity Under the Equity Plans (Details) Sheet http://www.heritagecommercecorp.com/role/EquityPlanScheduleofStockOptionActivityUndertheEquityPlansDetails Equity Plan - Schedule of Stock Option Activity Under the Equity Plans (Details) Details 105 false false R106.htm 9955582 - Disclosure - Equity Plan - Schedule of Information Related to Stock Option Activity Under the Equity Plans (Details) Sheet http://www.heritagecommercecorp.com/role/EquityPlanScheduleofInformationRelatedtoStockOptionActivityUndertheEquityPlansDetails Equity Plan - Schedule of Information Related to Stock Option Activity Under the Equity Plans (Details) Details 106 false false R107.htm 9955583 - Disclosure - Equity Plan - Schedule of Assumptions Used to Estimate the Fair Value of Each Option Grant on the Date of Grante (Details) Sheet http://www.heritagecommercecorp.com/role/EquityPlanScheduleofAssumptionsUsedtoEstimatetheFairValueofEachOptionGrantontheDateofGranteDetails Equity Plan - Schedule of Assumptions Used to Estimate the Fair Value of Each Option Grant on the Date of Grante (Details) Details 107 false false R108.htm 9955584 - Disclosure - Equity Plan - Schedule of Restricted Stock Activity (Details) Sheet http://www.heritagecommercecorp.com/role/EquityPlanScheduleofRestrictedStockActivityDetails Equity Plan - Schedule of Restricted Stock Activity (Details) Details 108 false false R109.htm 9955585 - Disclosure - Benefit Plans - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/BenefitPlansAdditionalInformationDetails Benefit Plans - Additional Information (Details) Details 109 false false R110.htm 9955586 - Disclosure - Benefit Plans - Schedule of Change in Projected Benefit Obligation (Details) Sheet http://www.heritagecommercecorp.com/role/BenefitPlansScheduleofChangeinProjectedBenefitObligationDetails Benefit Plans - Schedule of Change in Projected Benefit Obligation (Details) Details 110 false false R111.htm 9955587 - Disclosure - Benefit Plans - Schedule of Weighted-average Assumptions Used to Determine the Benefit Obligation (Details) Sheet http://www.heritagecommercecorp.com/role/BenefitPlansScheduleofWeightedaverageAssumptionsUsedtoDeterminetheBenefitObligationDetails Benefit Plans - Schedule of Weighted-average Assumptions Used to Determine the Benefit Obligation (Details) Details 111 false false R112.htm 9955588 - Disclosure - Benefit Plans - Schedule of Estimated Benefit Payments Over the Next Ten Years, Which Reflect Anticipated Future Events, Service and Other Assumptions (Details) Sheet http://www.heritagecommercecorp.com/role/BenefitPlansScheduleofEstimatedBenefitPaymentsOvertheNextTenYearsWhichReflectAnticipatedFutureEventsServiceandOtherAssumptionsDetails Benefit Plans - Schedule of Estimated Benefit Payments Over the Next Ten Years, Which Reflect Anticipated Future Events, Service and Other Assumptions (Details) Details 112 false false R113.htm 9955589 - Disclosure - Benefit Plans - Schedule of Components of Net Periodic Benefit Cost (Details) Sheet http://www.heritagecommercecorp.com/role/BenefitPlansScheduleofComponentsofNetPeriodicBenefitCostDetails Benefit Plans - Schedule of Components of Net Periodic Benefit Cost (Details) Details 113 false false R114.htm 9955590 - Disclosure - Benefit Plans - Schedule of Assumption Used to Determine the Net Periodic Benefit Cost (Details) Sheet http://www.heritagecommercecorp.com/role/BenefitPlansScheduleofAssumptionUsedtoDeterminetheNetPeriodicBenefitCostDetails Benefit Plans - Schedule of Assumption Used to Determine the Net Periodic Benefit Cost (Details) Details 114 false false R115.htm 9955591 - Disclosure - Benefit Plans - Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss (Details) Sheet http://www.heritagecommercecorp.com/role/BenefitPlansScheduleofAmountsRecognizedinAccumulatedOtherComprehensiveLossDetails Benefit Plans - Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss (Details) Details 115 false false R116.htm 9955592 - Disclosure - Fair Value - Schedule of Financial Assets and Liabilities Measured on Recurring Basis (Details) Sheet http://www.heritagecommercecorp.com/role/FairValueScheduleofFinancialAssetsandLiabilitiesMeasuredonRecurringBasisDetails Fair Value - Schedule of Financial Assets and Liabilities Measured on Recurring Basis (Details) Details 116 false false R117.htm 9955593 - Disclosure - Fair Value - Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) Sheet http://www.heritagecommercecorp.com/role/FairValueScheduleofCarryingAmountsandEstimatedFairValuesofFinancialInstrumentsDetails Fair Value - Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) Details 117 false false R118.htm 9955594 - Disclosure - Commitments and Contingencies - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/CommitmentsandContingenciesAdditionalInformationDetails Commitments and Contingencies - Additional Information (Details) Details 118 false false R119.htm 9955595 - Disclosure - Commitments and Contingencies - Schedule of Commitments to Extend Credit (Details) Sheet http://www.heritagecommercecorp.com/role/CommitmentsandContingenciesScheduleofCommitmentstoExtendCreditDetails Commitments and Contingencies - Schedule of Commitments to Extend Credit (Details) Details 119 false false R120.htm 9955596 - Disclosure - Shareholders' Equity and Earnings Per Share - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/ShareholdersEquityandEarningsPerShareAdditionalInformationDetails Shareholders' Equity and Earnings Per Share - Additional Information (Details) Details 120 false false R121.htm 9955597 - Disclosure - Shareholders' Equity and Earnings Per Share - Schedule of Reconciliation of Factors Used in Computing Basic and Diluted Earnings per Common Share (Details) Sheet http://www.heritagecommercecorp.com/role/ShareholdersEquityandEarningsPerShareScheduleofReconciliationofFactorsUsedinComputingBasicandDilutedEarningsperCommonShareDetails Shareholders' Equity and Earnings Per Share - Schedule of Reconciliation of Factors Used in Computing Basic and Diluted Earnings per Common Share (Details) Details 121 false false R122.htm 9955598 - Disclosure - Capital Requirements - Schedule of Actual Capital and Required Amounts and Ratios (Details) Sheet http://www.heritagecommercecorp.com/role/CapitalRequirementsScheduleofActualCapitalandRequiredAmountsandRatiosDetails Capital Requirements - Schedule of Actual Capital and Required Amounts and Ratios (Details) Details 122 false false R123.htm 9955599 - Disclosure - Capital Requirements - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/CapitalRequirementsAdditionalInformationDetails Capital Requirements - Additional Information (Details) Details 123 false false R124.htm 9955600 - Disclosure - Revenue Recognition (Details) Sheet http://www.heritagecommercecorp.com/role/RevenueRecognitionDetails Revenue Recognition (Details) Details http://www.heritagecommercecorp.com/role/RevenueRecognitionTables 124 false false R125.htm 9955601 - Disclosure - Noninterest Expense (Details) Sheet http://www.heritagecommercecorp.com/role/NoninterestExpenseDetails Noninterest Expense (Details) Details http://www.heritagecommercecorp.com/role/NoninterestExpenseTables 125 false false R126.htm 9955602 - Disclosure - Business Segment Information - Additional Information (Details) Sheet http://www.heritagecommercecorp.com/role/BusinessSegmentInformationAdditionalInformationDetails Business Segment Information - Additional Information (Details) Details 126 false false R127.htm 9955603 - Disclosure - Business Segment Information - Schedule of Information by Operating Segment (Details) Sheet http://www.heritagecommercecorp.com/role/BusinessSegmentInformationScheduleofInformationbyOperatingSegmentDetails Business Segment Information - Schedule of Information by Operating Segment (Details) Details 127 false false R128.htm 9955604 - Disclosure - Parent Company only Condensed Financial Information - Schedule of Balance Sheets (Details) Sheet http://www.heritagecommercecorp.com/role/ParentCompanyonlyCondensedFinancialInformationScheduleofBalanceSheetsDetails Parent Company only Condensed Financial Information - Schedule of Balance Sheets (Details) Details 128 false false R129.htm 9955605 - Disclosure - Parent Company only Condensed Financial Information - Schedule of Statements of Income (Details) Sheet http://www.heritagecommercecorp.com/role/ParentCompanyonlyCondensedFinancialInformationScheduleofStatementsofIncomeDetails Parent Company only Condensed Financial Information - Schedule of Statements of Income (Details) Details 129 false false R130.htm 9955606 - Disclosure - Parent Company only Condensed Financial Information - Schedule of Statements of Cash Flows (Details) Sheet http://www.heritagecommercecorp.com/role/ParentCompanyonlyCondensedFinancialInformationScheduleofStatementsofCashFlowsDetails Parent Company only Condensed Financial Information - Schedule of Statements of Cash Flows (Details) Details 130 false false R131.htm 9955607 - Disclosure - Subsequent Events (Details) Sheet http://www.heritagecommercecorp.com/role/SubsequentEventsDetails Subsequent Events (Details) Details http://www.heritagecommercecorp.com/role/SubsequentEvents 131 false false All Reports Book All Reports htbk-20251231.htm htbk-20251231.xsd htbk-20251231_cal.xml htbk-20251231_def.xml htbk-20251231_lab.xml htbk-20251231_pre.xml htbk-20251231_g1.jpg htbk-20251231_g2.jpg http://fasb.org/srt/2025 http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/cyd/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/ecd/2025 true true