75000 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 75010 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 75020 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 75030 - Statement - CONSOLIDATED STATEMENTS OF INCOME (LOSS) (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 75040 - Statement - CONSOLIDATED STATEMENTS OF INCOME (LOSS) (UNAUDITED) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 75050 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 75060 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 75070 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 75080 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 75090 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 995455 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 995465 - Disclosure - Securities Available-for-Sale link:presentationLink link:calculationLink link:definitionLink 995475 - Disclosure - Loans and Allowance for Credit Losses on Loans link:presentationLink link:calculationLink link:definitionLink 995485 - Disclosure - Loan Servicing link:presentationLink link:calculationLink link:definitionLink 995495 - Disclosure - Deposits link:presentationLink link:calculationLink link:definitionLink 995505 - Disclosure - Borrowings link:presentationLink link:calculationLink link:definitionLink 995515 - Disclosure - Financial Instruments with Off-Balance Sheet Credit Exposures link:presentationLink link:calculationLink link:definitionLink 995525 - Disclosure - Employee Benefits link:presentationLink link:calculationLink link:definitionLink 995535 - Disclosure - Stock Based Compensation link:presentationLink link:calculationLink link:definitionLink 995545 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 995555 - Disclosure - Other Comprehensive Income (Loss) link:presentationLink link:calculationLink link:definitionLink 995565 - Disclosure - Regulatory Matters link:presentationLink link:calculationLink link:definitionLink 995575 - Disclosure - Treasury Stock link:presentationLink link:calculationLink link:definitionLink 995585 - Disclosure - Derivatives and Hedging Activities link:presentationLink link:calculationLink link:definitionLink 995595 - Disclosure - Fair Values of Assets and Liabilities link:presentationLink link:calculationLink link:definitionLink 995605 - Disclosure - Earnings (Loss) Per Share link:presentationLink link:calculationLink link:definitionLink 995615 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 995625 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 995635 - Disclosure - Securities Available-for-Sale (Tables) link:presentationLink link:calculationLink link:definitionLink 995645 - Disclosure - Loans and Allowance for Credit Losses on Loans (Tables) link:presentationLink link:calculationLink link:definitionLink 995655 - Disclosure - Loan Servicing (Tables) link:presentationLink link:calculationLink link:definitionLink 995665 - Disclosure - Deposits (Tables) link:presentationLink link:calculationLink link:definitionLink 995675 - Disclosure - Borrowings (Tables) link:presentationLink link:calculationLink link:definitionLink 995685 - Disclosure - Financial Instruments with Off-Balance Sheet Credit Exposures (Tables) link:presentationLink link:calculationLink link:definitionLink 995695 - Disclosure - Stock Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 995705 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 995715 - Disclosure - Other Comprehensive Income (Loss) (Tables) link:presentationLink link:calculationLink link:definitionLink 995725 - Disclosure - Regulatory Matters (Tables) link:presentationLink link:calculationLink link:definitionLink 995735 - Disclosure - Derivatives and Hedging Activities (Tables) link:presentationLink link:calculationLink link:definitionLink 995745 - Disclosure - Fair Values of Assets and Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 995755 - Disclosure - Earnings (Loss) Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 995765 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995775 - Disclosure - Securities Available-for-Sale - Schedule of amortized cost and fair value of securities available-for-sale (Detail) link:presentationLink link:calculationLink link:definitionLink 995785 - Disclosure - Securities Available-for-Sale - Schedule of amortized cost and fair values of securities available-for-sale by contractual maturity (Detail) link:presentationLink link:calculationLink link:definitionLink 995795 - Disclosure - Securities Available-for-Sale - Summary of gross unrealized losses and fair value for those investments with unrealized losses (Detail) link:presentationLink link:calculationLink link:definitionLink 995805 - Disclosure - Securities Available-for-Sale - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995815 - Disclosure - Securities Available-for-Sale - Summary of sales proceeds, principal payments received and gross realized gains and losses on available for sale securities (Detail) link:presentationLink link:calculationLink link:definitionLink 995825 - Disclosure - Loans and Allowance for Credit Losses on Loans - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995835 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Accounts, Notes, Loans and Financing Receivable (Detail) link:presentationLink link:calculationLink link:definitionLink 995845 - Disclosure - Loans and Allowance for Credit Losses on Loans - Transactions In The Allowance For Loan Losses ("ALL") (Detail) link:presentationLink link:calculationLink link:definitionLink 995855 - Disclosure - Loans and Allowance for Credit Losses on Loans - Summary of (Release) Provision For Credit Losses (Details) link:presentationLink link:calculationLink link:definitionLink 995865 - Disclosure - Loans and Allowance for Credit Losses on Loans - Analysis Of Past Due Loans By Portfolio Segment Including Non-Accrual Loans Without ACL (Detail) link:presentationLink link:calculationLink link:definitionLink 995875 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule Of Risk Category Of Loans By Portfolio Segment By Vintage Under CECL Methodology (Details) link:presentationLink link:calculationLink link:definitionLink 995885 - Disclosure - Loan Servicing - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995895 - Disclosure - Loan Servicing - Summary of Activity In Mortgage Servicing Rights (Detail) link:presentationLink link:calculationLink link:definitionLink 995905 - Disclosure - Deposits - Deposit Liabilities (Detail) link:presentationLink link:calculationLink link:definitionLink 995915 - Disclosure - Deposits - Time Deposit Maturities (Detail) link:presentationLink link:calculationLink link:definitionLink 995925 - Disclosure - Deposits - Additional information (Detail) link:presentationLink link:calculationLink link:definitionLink 995935 - Disclosure - Borrowings - Schedule of Federal Home Loan Bank Advances by Branch of FHLB Bank (Detail) link:presentationLink link:calculationLink link:definitionLink 995945 - Disclosure - Borrowings - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995955 - Disclosure - Financial Instruments with Off-Balance Sheet Credit Exposures - Schedule of Notional Amounts of Financial Instruments with Off-Balance Sheet Credit Risk (Detail) link:presentationLink link:calculationLink link:definitionLink 995965 - Disclosure - Financial Instruments with Off-Balance Sheet Credit Exposures - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995975 - Disclosure - Employee Benefits - Additional information (Detail) link:presentationLink link:calculationLink link:definitionLink 995985 - Disclosure - Stock Based Compensation - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995995 - Disclosure - Stock Based Compensation - Schedule of Company Compensation Expense for the ESOP (Detail) link:presentationLink link:calculationLink link:definitionLink 996005 - Disclosure - Stock Based Compensation - Summary of Non-vested Stock Options Outstanding (Detail) link:presentationLink link:calculationLink link:definitionLink 996015 - Disclosure - Stock Based Compensation - Summary of Non-vested Restricted Shares Outstanding (Detail) link:presentationLink link:calculationLink link:definitionLink 996025 - Disclosure - Leases - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 996035 - Disclosure - Leases - Lease Portfolio and Other Supplemental Lease Information (Detail) link:presentationLink link:calculationLink link:definitionLink 996045 - Disclosure - Leases - Components of Operating Lease Cost and Other Related Information (Detail) link:presentationLink link:calculationLink link:definitionLink 996055 - Disclosure - Leases - Schedule of Total Minimum Lease Payments Due In Future Periods For Lease Agreements (Detail) link:presentationLink link:calculationLink link:definitionLink 996065 - Disclosure - Leases - Schedule of Total Minimum Lease Payments Due In Future Periods For Lease Agreements (Detail) 3 link:presentationLink link:calculationLink link:definitionLink 996075 - Disclosure - Leases - Schedule of Total Minimum Lease Payments Due In Future Periods For Lease Agreements (Detail) 35 link:presentationLink link:calculationLink link:definitionLink 996085 - Disclosure - Leases - Schedule of Total Minimum Lease Payments Due In Future Periods For Lease Agreements (Detail) 2 link:presentationLink link:calculationLink link:definitionLink 996095 - Disclosure - Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Detail) link:presentationLink link:calculationLink link:definitionLink 996105 - Disclosure - Other Comprehensive Income (Loss) - Summary of Changes in Component of AOCI (Detail) link:presentationLink link:calculationLink link:definitionLink 996115 - Disclosure - Regulatory Matters - Schedule of Regulatory Capital Requirements (Detail) link:presentationLink link:calculationLink link:definitionLink 996125 - Disclosure - Treasury Stock - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 996135 - Disclosure - Derivatives and Hedging Activities - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 996145 - Disclosure - Derivatives and Hedging Activities - Summary of Balance Sheet Related to Cumulative Basis Adjustment for Fair Value Hedges (Detail) link:presentationLink link:calculationLink link:definitionLink 996155 - Disclosure - Derivatives and Hedging Activities - Summary of Fair Values of Derivative Financial Instruments Classification on Consolidated Balance Sheets (Details) link:presentationLink link:calculationLink link:definitionLink 996165 - Disclosure - Derivatives and Hedging Activities - Summary of Derivative Financial Instruments Not Designated as Hedging Instruments on Consolidated Statements of Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 996175 - Disclosure - Derivatives and Hedging Activities - Summary of Derivative Position offset in Consolidated Balance Sheets (Detail) link:presentationLink link:calculationLink link:definitionLink 996185 - Disclosure - Fair Values of Assets and Liabilities - Summary of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) link:presentationLink link:calculationLink link:definitionLink 996195 - Disclosure - Fair Values of Assets and Liabilities - Summary of Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) link:presentationLink link:calculationLink link:definitionLink 996205 - Disclosure - Fair Values of Assets and Liabilities - Summary of Significant Unobservable Inputs used in Level 3 Assets Measured at Fair Value on Recurring Basis (Detail) link:presentationLink link:calculationLink link:definitionLink 996215 - Disclosure - Fair Values of Assets and Liabilities - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 996225 - Disclosure - Fair Values of Assets and Liabilities - Fair Value Measurements, Recurring and Nonrecurring (Detail) link:presentationLink link:calculationLink link:definitionLink 996235 - Disclosure - Earnings (Loss) Per Share - Summary of Reconciliation between Basic and Diluted Earnings (Loss) Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 996245 - Disclosure - Earnings (Loss) Per Share - Summary of Reconciliation between Basic and Diluted Earnings (Loss) Per Share (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 996255 - Disclosure - Subsequent Events - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink Scenario [Axis] Scenario Summary of Fair Values of Derivative Financial Instruments Classification on Consolidated Balance Sheets Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Cumulative Adjustment for Change in Accounting Principle [Member] Impact of ASC 326 Adoption [Member] Impact of adopting ASC 326 [Member] Dividend Income, Operating Dividends Dividend Income, Operating, Total Payments of FHLBank Borrowings, Financing Activities Payments on long-term FHLB advances Derivative Liabilities, Net Amount Derivative Liability, Subject to Master Netting Arrangement, after Offset and Deduction Derivative Liability, Subject to Master Netting Arrangement, after Offset and Deduction, Total Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions Less than 12 Months, Number of Securities Servicing Asset at Fair Value, Disposals Payoffs Financial Asset, Not Past Due [Member] Current Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss More than 12 Months, Unrealized Losses Preferred Stock, Shares Issued Preferred Stock, Shares Issued Debt Disclosure [Text Block] Borrowings Operating Lease, Liability Operating lease liability Operating lease liability Lease liabilities Business Combination, Consideration Transferred, Equity Interest, Type [Domain] Disclosure of Other Comprehensive Income Loss Disclosure Of Other Comprehensive Income Loss [Abstract] Weighted Average Number of Shares Outstanding, Diluted Diluted Weighted average diluted common shares outstanding Weighted average diluted common shares outstanding Fixed Rate Assets [Member] Fixed Rate Assets [Member] Fixed rate assets. Derivatives Not Designated as Hedging Instruments [Member] Not Designated as Hedging Instrument [Member] Schedule of amortized cost and fair values of securities available-for-sale by contractual maturity Tabular disclosure of maturities of an entity's available-for-sale securities. Schedule Of Availableforsale Securities Classified By Contractual Maturity Date Table [Text Block] Minimum [Member] Minimum [Member] Debt Securities, Available-for-Sale, Realized Gain Gross realized gains Interest Expense, Deposits Interest on deposits Interest Expense, Deposits, Total Time Deposit Maturities, Year Two 2028 Preferred Stock, Shares Outstanding Preferred Stock, Shares Outstanding Preferred Stock, Shares Outstanding, Beginning Balance Preferred Stock, Shares Outstanding, Ending Balance Securities available-for-sale, at fair value. Securities Available-for-sale At Fair Value [Member] Securities Available-for-sale, at Fair Value [Member] Investment, Name [Axis] Finance Lease, Liability, to be Paid, Year Two Finance lease, 2028 Fair Value, Recurring [Member] Fair Value, Measurements, Recurring [Member] Summary of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block] Restricted stock awards time-vest Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Servicing Asset, Valuation Technique [Extensible Enumeration] Servicing Asset, Valuation Technique [Extensible List] Common stock, number of shares issued Common stock issued Common Stock, Shares, Issued OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax, Total Reclassification adjustment for net amortization of bond premiums included in net income (loss), income taxes Exercisable at end of year Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Income tax (benefit) expense Income tax (benefit) expense Income Tax Expense (Benefit), Total Income tax expense (benefit) Income tax benefit Federal Funds Purchased Advances from Federal Home Loan Bank Advances from Federal Home Loan Bank Municipal Bonds [Member] Municipal bonds [Member] Fair Value Hedging [Member] Fair Value Hedging [Member] Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Due after one year through five years, Fair Value Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum Minimum Capital Requirement Ratio, Tier 1 Capital (to risk-weighted assets) Increase (Decrease) in Deposits Increase (Decrease) in Deposits, Total Net increase (decrease) in NOW, demand deposits, money market and savings accounts Director Fee Director compensation Banking Regulation, Total Capital, Actual Actual, Total Capital (to risk- weighted assets) Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Fed funds borrowing capacity Merger Agreement [Member] Merger Agreement [Member] Merger agreement. Payments for (Proceeds from) Federal Home Loan Bank Stock Net redemption (purchase) of Federal Home Loan Bank stock Net redemption (purchases) of Federal Home Loan Bank stock Amount of time deposit liabilities, including certificates of deposit, in denominations of $250000 or more. Time Deposits250000 Or More Time deposits $250,000 and greater Aggregate cash purchase price. Aggregate Cash Purchase Price Aggregate cash purchase price Debt Securities, Available-for-Sale, Amortized Cost Amortized Cost Mortgage-backed securities, Amortized Cost Subsequent Event Type [Domain] Directors and Management Members [Member]. Directors And Management Members [Member] Directors and Members [Member] Measurement Input, Prepayment Rate [Member] Prepayment Rate [Member] Lessee, Operating Lease, Liability, Undiscounted Excess Amount Operating lease, Less: interest Banking Regulation, Tier 1 Leverage Capital, Well Capitalized, Minimum Minimum Capital Required to be Well Capitalized, Tier 1 Capital (to average assets) Employee Stock Ownership Plan (ESOP), Number of Suspense Shares Unallocated Cash Activities [Abstract] Cash activities: Income Statement [Abstract] Derivative liabilities, notional amount Derivative Liability, Notional Amount Notional amount The entire disclosure for information about available for sale securities. Securities Available For Sale [Text Block] Securities Available For Sale Share Repurchase Program, Remaining Authorized, Number of Shares Number of shares authorized for repurchase Maximum Number of Shares that may Yet Be Purchased Under the Plans or Programs Comprehensive Income (Loss) Note [Text Block] Other Comprehensive Income (Loss) Salary Continuation Plan [Member] Salary Continuation Plan [Member] Salary Continuation Plan [Member] Forfeited Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Forfeited Significant Accounting Policies [Table] Significant accounting policies. Lease, Cost [Table Text Block] Components of Operating Lease Cost and Other Related Information Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] Schedule of amortized cost and fair value of securities available-for-sale Related and Nonrelated Parties [Domain] Earnings Per Share, Basic Basic Earnings Per Share, Basic, Total Income (loss) earnings per common share - basic Document Period End Date Document Period End Date Interest on lease liabilities Finance Lease, Interest Expense Federal Home Loan Bank Advances Three [Member] Federal Home Loan Bank Advances Three [Member] Federal Home Loan Bank Advances Three [Member] Other Noninterest Expense Other expense Bank Term Funding Program [Member] Bank Term Funding Program [Member] Bank term funding program. Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Issued stock option granted, term Payments to Acquire Property, Plant, and Equipment Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment, Total Common stock, number of shares authorized Common Stock, Shares Authorized Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Due Date Maturity Dates Statement of Stockholders' Equity [Abstract] Debt Securities [Member] Loans, net [Member] Transfers and Servicing [Abstract] Finance lease, Right-of-use asset Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total Finance Lease, Right-of-Use Asset, after Accumulated Amortization Employee Stock Option Plan [Member] Employee stock option plan [Member] Total loans Total Total Loans Financing Receivable, before Allowance for Credit Loss, Ending Balance Financing Receivable, before Allowance for Credit Loss, Beginning Balance Bank loans outstanding Fixed Interest Rate Swap [Member] Fixed Interest Rate Swap Member Fixed interest rate swap. Interest Income, Securities, Operating, Taxable Taxable Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations Fair value related to grant Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Interest Rate Contract [Member] Interest Rate Contract [Member] Adjustments To Additional Paid-In Capital, Decrease From Excise Tax On Stock Repurchases Adjustments to additional paid-in capital, decrease from excise tax on stock repurchases. Excise tax on stock repurchases Federal Home Loan Bank Advances [Member] Federal Home Loan Bank Advances [Member] Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Total change in interest rate swaps Treasury Stock Treasury Stock [Text Block] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Aggregate Intrinsic Value Outstanding Cash and due from banks Cash And Due From Banks [Member] Cash and due from banks [Member] Amortization of unearned stock compensation Amortization of unearned stock compensation Amortization of unearned stock compensation. Represents Percentage Of Funding Status. Percentage Of Funding Status Percentage of funding status Assets Total assets Title of 12(b) Security Title of 12(b) Security Loss Contingency, Nature [Domain] Preferred Stock, Value, Issued Preferred Stock, $.01 par value, 10,000,000 shares authorized, none issued Loans collaterized by real estate properties.. Loans Collaterized By Real Estate Loans collateralized by real estate C+I [Member] Commercial And Industrial Portfolio Segment [Member] C+I [Member] Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Non-vested at end of period Non-vested at beginning of period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Stock options granted, outstanding Number of Shares Granted Purchase of shares of common stock Stock Issued During Period, Shares, Employee Stock Ownership Plan Title and Position [Domain] Title of Individual Finance Lease, Liability, to be Paid, Year Three Finance lease, 2029 Deposits, Savings Deposits Savings deposits Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Total unrealized gain (loss) on securities available-for-sale Designated hedged items Derivative, Notional Amount Operating Lease, Payments Operating cash flows from operating leases Antidilutive Securities, Name [Domain] Liabilities, Fair Value Disclosure [Abstract] Other Liabilities: Other liabilities: Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Operating lease, 2026 Interest Paid, Excluding Capitalized Interest, Operating Activity Cash paid for interest Carrying Amount of Hedged Assets/(Liabilities) Hedged Asset, Fair Value Hedge Carrying amount of savings deposit Bank Owned Life Insurance Bank-owned life insurance Time Deposits [Member] Time Deposits [Member] Time Deposits [Member] Interest Income, Securities, Operating, by Taxable Status [Abstract] Interest on debt securities: Payments for origination of loans sold from portfolio. Payments For Origination Of Loans Sold From Portfolio Origination of loans sold Lessee, Operating Lease, Liability, to be Paid, Year One Operating lease, 2027 Treasury Stock, Value, Acquired, Cost Method Treasury stock activity Interest Expense, Operating Total interest expense Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted-Average Remaining Contractual Term Stock options at beginning period Weighted Average Remaining Contractual Term Class of Treasury Stock [Table] Class Of Treasury Stock [Table] Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other comprehensive income (loss), net of income taxes: Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Forfeiture of stock compensation (shares) Forfeiture of stock compensation (shares) Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Bank Owned Life Insurance Income Income from bank-owned life insurance Interest Income, Securities, Operating, Tax Exempt Non-taxable Federal Home Loan Bank Advances Five [Member] Federal home loan bank advances five. Federal Home Loan Bank Advances Five [Member] Lessee, Operating Leases [Text Block] Leases Percentage Of Annual Increment In Base Rent Of Lease Percentage of annual increment in base rent of lease. Annual increment in base rent of lease, percentage FHLB Callable Date December 8, 2025 [Member] FHLB callable date December eight two thousand twenty five. FHLB Callable Date December Eight Two Thousand Twenty Five [Member] Time Deposit Maturities, Year Five 2031 Federal Home Loan Bank, Advances, Option [Domain] Federal Home Loan Bank, Advances, Option Earnings Per Share, Diluted [Abstract] Income (loss) earnings per common share - diluted: Ending Balance Beginning Balance Equity, Attributable to Parent Total stockholders' equity Treasury Stock [Member] Treasury Stock, Common [Member] Provision release for credit losses. Provision Release For Credit Losses (Release) provision for credit losses Total (release) provision for credit losses Federal Home Loan Bank Advances Two [Member] Federal Home Loan Bank Advances Two [Member] Federal Home Loan Bank Advances Two [Member] Number of core services. Number Of Core Services Number of core services Service charges on deposit accounts. Service Charges On Deposit Accounts Customer service fees Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax Net income (loss) Transfers and Servicing of Financial Assets [Text Block] Loan Servicing Earnings Per Share [Text Block] Earnings (Loss) Per Share Fixed annual rate Derivative, Fixed Interest Rate Unearned ESOP Shares Unearned compensation for ESOP Unearned stock compensation Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Due in one year or less, Fair value Weighted Average [Member] Weighted Average [Member] Reciprocal deposits. Reciprocal Deposits Reciprocal deposits Number of reportable segment Number of Reportable Segments Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Summary of Changes in Component of AOCI Schedule of Servicing Assets at Fair Value [Table Text Block] Schedule of Servicing Assets at Fair Value Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Derivative Instruments and Hedging Activities Disclosures [Table] Other comprehensive income (loss) reclassification adjustment from AOCI for sale and for write down of securities and for net interest expense income on swaps, net of tax. Other Comprehensive Income Loss Reclassification Adjustment From AOCI For Sale And For Write Down Of Securities And For Net Interest Expense Income On Swaps Net Of Tax Total reclassification adjustments Credit Facility [Axis] Credit Facility Represents increase decrease in bank owned life insurance. Increase Decrease In Bank Owned Life Insurance Increase in bank-owned life insurance Finance Lease, Liability, Undiscounted Excess Amount Finance lease, Less: interest Finance lease, Less: interest Finance lease, Less: interest Lessee, Operating Lease, Liability, to be Paid, after Year Five Operating lease, Thereafter Federal Home Loan Bank, Advances, Option [Axis] Federal Home Loan Bank, Advances, Option Proceeds from FHLBank Borrowings, Financing Activities Proceeds from long-term FHLB advances Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Gains Deferred taxes related to interest rate swaps. Deferred Taxes Related To Interest Rate Swaps Deferred taxes Financial Asset, Aging [Domain] Financial Asset, Aging Restricted Stock [Member] Restricted Stock Awards [Member] Customer Loan Swaps - Dealer Bank [Member] Customer loan swaps - dealer bank. Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Vested Loss Contingency Nature [Axis] Noninterest Income, Other Operating Income Other income Deposit Liabilities Disclosures [Text Block] Deposits Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Summary of Significant Unobservable Inputs used in Level 3 Assets Measured at Fair Value on Recurring Basis Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum Minimum Capital Requirement Ratio, Tier 1 Capital (to average assets) Investment Banking Revenue Investment services fees Noncash activities cumulative fair value hedging adjustment, securities available-for-sale. Noncash Activities Cumulative Fair Value Hedging Adjustment, Securities Available-for-sale Cumulative fair value hedging adjustment - securities available-for-sale ADL [Member] ADL [Member] Acquisition Development And Land Portfolio Segment [Member] Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Due in one year or less Statistical Measurement [Axis] Statistical Measurement Common Equity Tier One Capital Required For Adequacy To Risk based Assets. Common Equity Tier One Capital Required For Adequacy To Risk Based Assets Minimum Capital Requirement Ratio, Common Equity Tier 1 (to risk-weighted assets) Accrued Investment Income Receivable Accrued interest receivable Debt Securities, Available-for-Sale, Unrealized Loss Position Total, Fair Value Entity Interactive Data Current Entity Interactive Data Current Lessee, Operating Lease, Liability, to be Paid, Year Three Operating lease, 2029 Amount of time deposit liabilities, including certificates of deposit, in denominations of less than $250000 Time Deposits Less Than250000 Time deposits of less than $250,000 Federal Home Loan Bank, Advance, Branch of FHLBank [Line Items] Derivative Liability, Type [Extensible Enumeration] Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] Weighted Average Remaining Contractual Term Fully vested and expected to vest Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Common Stock, Value, Issued Common Stock, $.01 par value, 90,000,000 shares authorized; 5,304,812 issued; 4,689,258 and 4,694,149 shares outstanding as of June 30, 2026 and December 31, 2025, respectively Fair Value, off-Balance-Sheet Risk [Table] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Summary of Reconciliation between Basic and Diluted Earnings (Loss) Per Share US Government Agencies Debt Securities [Member] U.S. Government agency small business administration pools guaranteed by the SBA [Member] Liabilities Total liabilities Represents Employee Travel And Education Expenses. Employee Travel And Education Expenses Employee travel and education expenses Operating Lease Initial Term Operating lease initial term Operating lease initial term. Gains on termination of interest rate swaps Other Comprehensive Income Loss Reclassification Adjustment From AOCI Gains On Termination Of Interest Rate Swaps Other Comprehensive Income Loss Reclassification Adjustment From AOCI Gains On Termination Of Interest Rate Swaps Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Summary of Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis Retained Earnings (Accumulated Deficit) Retained earnings Retained Earnings (Accumulated Deficit), Total Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Gain (Loss) on Disposition of Property Plant Equipment, Total Gain (Loss) on Disposition of Property Plant Equipment Loss on disposition of equipment Gain on sale of land and buildings Pass [Member] Pass [Member] Equity Method Investment, Ownership Percentage Equity method investment ownership percentage Derivative assets, notional amount Derivative Assets, Notional amount Derivative Asset, Notional Amount Federal Home Loan Bank Advances [Axis] Federal Home Loan Bank Advances Hedging Relationship [Domain] Hedging Relationship Fair Value, by Balance Sheet Grouping [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Commitments to originate loans [Member] Loan Origination Commitments [Member] Non financial assets and liabilities fair value recurring. Non Financial Assets And Liabilities Fair Value Recurring Non-financial assets and liabilities measured at fair value on a recurring basis Common stock shares sold Stock Issued During Period, Shares, New Issues Common stock shares issued during period, new issues Withdrawal liability amount Withdrawal Liability Amount Withdrawal liability amount. Annual benefit Supplemental Unemployment Benefits, Severance Benefits Servicing Asset at Fair Value, Additions Additions Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Reclassification adjustment for net interest expense on swaps included in net income (loss), net of income taxes of $5, $-0-, $9 and $-0-, respectively Reclassification adjustment for net interest expense on swaps included in net income (loss), net of income taxes of $5, $-0-, $9 and $-0-, respectively Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments Interest rate swaps Equipment Expense Equipment expense Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Actual Actual, Common Equity Tier 1 (to risk-weighted assets) Accounts, Notes, Loans and Financing Receivable [Line Items] Repossessed Assets Foreclosed assets Repossessed Assets, Total Branch Office and Certain Equipment Expires in June 2039 Branch office and certain equipment expires in june 2039. Branch Office And Certain Equipment Expires in June 2039 [Member] Financial Liabilities Fair Value Disclosure Financial Liabilities Fair Value Disclosure Financial Liabilities Fair Value Disclosure, Total Tabular disclosure of available for sale securities unrealized loss position fair value. Available For Sale Securities Unrealized Loss Position Fair Value Table [Text Block] Summary of gross unrealized losses and fair value for those investments with unrealized losses Operating Lease, Cost Net operating lease cost Derivative Asset, Type [Extensible Enumeration] Recent Accounting Pronouncements Yet to be Adopted Recent Accounting Pronouncements Yet To Be Adopted [Policy Text Block] Recent accounting pronouncements yet to be adopted. Long-Lived Asset, Class [Axis] Long-Lived Tangible Asset Federal Home Loan Bank Advances Four [Member] Federal home loan bank advances four. Federal Home Loan Bank Advances Four [Member] Subsequent Events Lessee Operating Lease Liability Payments Due After Year Four Operating lease, Thereafter Lessee operating lease liability payments due after year four. Financing Receivable, Year One, Originated, Current Fiscal Year 2026 / 2025 Standby letters of credit [Member] Standby Letters of Credit [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV Short-Term Debt, Type Short-Term Debt, Type [Axis] Defined Benefit Plan [Table] Financial Assets: Other assets: Assets, Fair Value Disclosure [Abstract] Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Due after one year through five years, Amortized Cost Advances from Federal Reserve Bank Advances From Federal Reserve Bank Advances from federal reserve bank. Weighted Average Number of Shares Outstanding, Diluted, Adjustment, Total Weighted Average Number of Shares Outstanding, Diluted, Adjustment Dilutive effect of common stock equivalents Corporate debt [Member] Corporate Debt Securities [Member] Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Tax Tax effect Vested restricted stock award surrendered in lieu of cash payment Vested restricted stock award surrendered in lieu of a cash payment Vested restricted stock award surrendered in lieu of a cash payment. 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Financial Instruments with Off-Balance Sheet Credit Exposures [Abstract] Special Mention [Member] Special Mention [Member] Finance Lease, Liability [Abstract] Finance lease cost: Fully Phased In [Member] Fully Phased In [Member] Fully Phased In [Member] Liabilities and Equity Total liabilities and stockholders' equity Lessee, Operating Lease, Liability, to be Paid, Year Two Operating lease, 2028 Debt Securities, Available-for-Sale, Realized Loss Gross realized losses Lessee, Lease, Description [Table] Lessee Lease Description [Table] Document Fiscal Period Focus Document Fiscal Period Focus Interest rate swap 2021 member. Interest Rate Swap2021 [Member] Interest Rate Swap 2021 [Member] Derivatives, Fair Value [Line Items] Derivatives Fair Value [Line Items] Net loans Financing Receivable, after Allowance for Credit Loss Loans, net Mortgagors Tax Escrow Mortgagors Tax Escrow [Member] Mortgagors' tax escrow [Member] Title and Position [Axis] Title of Individual Financial Asset, Past Due [Member] Total Past Due Accumulated Other Comprehensive Income (Loss) [Line Items] Reduced credit administration process for commercial relationships Reduced credit administration process for commercial relationships. Reduced Credit Administration Process For Commercial Relationships Interest rate swap interest income reclassified from AOCI into expense Fair Value of Interest Rate Fair Value Hedging Instruments Interest Income Reclassified from AOCI into Expense Fair value of interest rate fair value hedging instruments interest income reclassified from AOCI into expense. Prior Financing Receivable, Originated, More than Five Years before Current Fiscal Year Increase (Decrease) in Accrued Interest Receivable, Net Decrease (increase) in accrued interest receivable OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, after Tax Other comprehensive (loss) income Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Financelease, Right-of-use asset Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Weighted Average Exercise Price Exercisable at end of year Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability Unadvanced portions of loans Balance sheet hedging member. Balance Sheet Hedging [Member] Balance Sheet Hedges on 90-day Advances from FHLB [Member] Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Net change in cash and cash equivalents Entity Current Reporting Status Entity Current Reporting Status Interest and Dividend Income, Operating [Abstract] Interest and dividend income: Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum Minimum Capital Requirement Ratio, Common Equity Tier 1 (to risk-weighted assets) It represents Investment securities available-for-sale. Investment Securities Available For Sale Securities available-for-sale Financial Instrument [Axis] Financial Instrument Financial Assets, Fair Value Disclosure Assets measured at fair value Other assets, at fair value Assets, Fair Value Disclosure, Total Financing Receivable, Credit Quality Indicator [Table] Interest Income, Operating Total interest on debt securities Document Transition Report Document Transition Report Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Total, Unrealized Losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss, Total Employee Stock Ownership Plan (ESOP), Deferred Shares, Fair Value Employee stock option unallocated share fair value Represents debit card fee. Debit Card Fees Debit card fees Regulatory Capital Requirements under Banking Regulations [Text Block] Regulatory Matters Subsequent Event [Line Items] Accounting Standards Update [Domain] Accounting Standards Update Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Lease expiration month and year Lease expiration date Operating Lease Expiration Month and Year Operating lease expiration month and year. Real estate and equipment [Member] Real Estate And Equipment [Member] Real Estate And Equipment [Member] Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax Change in interest rate swaps, income taxes Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Stock awards unrecognized compensation expense Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Previous final base fee, percentage Share-Based Payment Arrangement [Abstract] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Time Deposit Maturities [Table Text Block] Maturities of Time Deposits Residential Real Estate [Member] Residential Real Estate [Member] Borrower-In-Custody of Collateral Program [Member] Borrower-In-Custody of Collateral Program [Member] Borrower-in-custody of collateral program. Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Ending Balance Beginning Balance Mortgage Servicing Rights Common Stock [Member] Common Stock [Member] Schedule of Risk Category Of Loans By Portfolio Segment By Vintage under CECL Methodology [Table Text Block] Schedule of risk category of loans by portfolio segment by vintage under CECL methodology. Schedule of Risk Category of Loans by Portfolio Segment by Vintage Under CECL Methodology Retirement Plan Type [Axis] Retirement Plan Type Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivatives and Hedging Activities Accounting Standards Update [Axis] Accounting Standards Update Credit Facility [Domain] Credit Facility Statistical Measurement [Domain] Statistical Measurement Fair Value Measurement Inputs and Valuation Techniques [Line Items] Noninterest Expense [Abstract] Non-interest expense: Commercial Real Estate Portfolio Segment [Member] CRE [Member] Number of lease renewal Number Of Operating Lease Renewal Number of operating lease renewal. Savings deposits. Savings Deposits [Member] Savings Deposits [Member] Lease portfolio and other supplemental lease information. Lease Portfolio And Other Supplemental Lease Information [Table Text Block] Lease Portfolio and Other Supplemental Lease Information Debt Securities, Available-for-Sale [Line Items] Other Comprehensive Income Loss Reclassification Adjustment From AOCI For Gains On Termination Of Interest Rate Swaps Net Of Tax, Total Net income Other Comprehensive Income Loss Reclassification Adjustment From AOCI For Gains On Termination Of Interest Rate Swaps Net Of Tax Other Comprehensive Income Loss Reclassification Adjustment From AOCI For Gains On Termination Of Interest Rate Swaps Net Of Tax Net income (loss) Director [Member] Equity, Attributable to Parent [Abstract] Stockholders' Equity: Stockholders' Equity [Abstract] Basic Weighted Average Number of Shares Outstanding, Basic, Total Weighted average common shares outstanding Weighted average common shares outstanding Finance Lease, Liability, to be Paid, Remainder of Fiscal Year Finance lease, 2026 Assets [Abstract] ASSETS Financial Assets: Derivative Liabilities, Cash Collateral Pledged (Received) Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset Amortized over remaining expected life of original swap Amortized Over Remaining Expected Life Of Original Swap Amortized over remaining expected life of original swap. Operating lease expense Total lease expense Operating Lease, Expense Entity Central Index Key Entity Central Index Key Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table] Lessee, Operating Lease, Remaining Lease Term Operating leases remaining lease terms Antidilutive Securities [Axis] Residential Portfolio Segment [Member] RES [Member] Proceeds from principal payments received on securities available-for-sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale The number of shares committed to the ESOP plan, but not allocated or contributed to the plan yet. 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. Employee Stock Ownership Plan E S O P Number Of Committed To Be Released Shares During Period Number of shares committed to be released each year,ESOP Interest-Bearing Deposits in Banks and Other Financial Institutions Interest bearing time deposits with other banks Interest-bearing time deposits with other banks Current Fiscal Year End Date Current Fiscal Year End Date Document Quarterly Report Document Quarterly Report Federal Home Loan Bank, Advance, Branch of FHLBank, Amount FHLB loan borrowed Net Income (Loss) Available to Common Stockholders, Diluted, Total Net Income (Loss) Available to Common Stockholders, Diluted Net income (loss) applicable to common shareholders Employee Stock Ownership Plan (ESOP) Name [Axis] Employee Stock Ownership Plan (ESOP) Name Debt Securities, Available-for-Sale [Table] Interest Rate Swap Contracts and Customer Loan Swaps [Member] Interest Rate Swap Contracts and Customer Loan Swaps [Member] Interest rate swap contracts and customer loan swaps. Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Time Deposit Maturities, Remainder of Fiscal Year 2026 Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted Average Exercise Price Outstanding at Ending of year Weighted Average Exercise Price Outstanding at beginning of year Time Deposits Total Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash provided by operating activities Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Diluted Earnings Per Share, Diluted Earnings Per Share, Diluted, Total Income (loss) earnings per common share - diluted Financing Receivable, Allowance for Credit Loss [Line Items] Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy, Minimum Minimum Capital Requirement, Tier 1 Capital (to risk-weighted assets) Preferred Stock, Par or Stated Value Per Share Preferred Stock, Par or Stated Value Per Share Cash Flow Hedging [Member] Cash Flow Hedging [Member] Cash Flow Hedges on 90-day Advances from FHLB [Member] Operating Lease, Weighted Average Discount Rate, Percent Operating lease, Weighted average discount rate Net income (loss) applicable to common shareholders Net income (loss) Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Greater than 90 Days [Member] Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Other comprehensive (loss) income Other comprehensive income (loss) Deposits [Member] Deposits [Member] Banking Regulation, Tier 1 Leverage Capital, Actual Actual, Tier 1 Capital (to average assets) Increase (Decrease) in Other Operating Assets Increase (Decrease) in Other Operating Assets, Total (Increase) decrease in other assets Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum Minimum Capital Requirement Ratio, Tier 1 Capital (to average assets) Financial Asset, 30 to 59 Days Past Due [Member] 30-59 Days Past Due [Member] Long-Lived Asset, Class [Domain] Share Repurchase Program, Authorized, Number of Shares Number of shares authorized for repurchase Lease Agreement Base Rent per Square Foot Lease agreement base rent per square foot. Lease agreement base rent per square foot Sale-leaseback transaction resulted pre-tax gain Sale Leaseback Transaction Resulted Pre Tax Gain Sale leaseback transaction resulted pre-tax gain. Lease Contractual Term [Domain] Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other comprehensive loss Other comprehensive income (loss) Other comprehensive income (loss) Stockholders other than First Seacoast Bancorp, MHC [Member] Stockholders Other than First Seacoast Bancorp, Mutual Holding Company [Member] Stockholders other than First Seacoast Bancorp, Mutual Holding Company. Summary of Balance Sheet Related to Cumulative Basis Adjustment for Fair Value Hedges Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Financing Receivable, Nonaccrual Non-Accrual Loans Measurement input delinquency rate. Measurement Input Delinquency Rate [Member] Delinquency Rate [Member] Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income (loss) Employee Stock Ownership Plan (ESOP), Shares in ESOP Total Percentage of additional outstanding shares repurchase Percentage Of Additional Outstanding Shares Repurchase Percentage of additional outstanding shares repurchase. Tabular disclosure of the allowance for loans and leases receivable by portfolio segment. Schedule Of Allowance For Loans And Leases Receivable Classification Schedule of Allowance For Loans And Leases Receivable Classification Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Due after ten years, Fair Value Measurement Frequency [Domain] Measurement Frequency Noninterest-Bearing Deposit Liabilities Non-interest bearing deposits Noninterest-Bearing Deposit Liabilities, Total Scenario [Domain] Scenario Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Amounts reclassified from AOCI Equity Components [Axis] Equity Components Employee Stock Ownership Plan (ESOP), Compensation Expense Employee stock option compensation recognized Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Cash flows from investing activities: Cash in collateral returned Cash and Due from Banks Cash and due from banks Cash and Due from Banks, Total Statement of Cash Flows [Abstract] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value Total U.S. Government-sponsored enterprises obligations, municipal bonds, corporate debt and corporate subordinated debt, Fair Value Retirement Benefits [Abstract] Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Due after five years through ten years, Amortized Cost Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Less than 12 Months, Unrealized Losses Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Fair Value Measurements, Recurring and Nonrecurring Fair Value Disclosures [Text Block] Fair Values of Assets and Liabilities Stock Issued During Period, Shares, Restricted Stock Award, Gross Stock issued during period, shares, restricted stock award Deposits from related parties Related Party Deposit Liabilities Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available Federal home loan bank maximum borrowing capacity The change in cash during the period due to the net increase or decrease in mortgagors' escrow accounts. Increase Decrease In Escrow Deposit Decrease in mortgagors' escrow accounts Financing Receivable, Allowance for Credit Loss Allowance for credit losses on loans Allowance for credit losses on loans Balance Balance Less allowance for credit losses on loans ASU 2023-09 [Member] Accounting Standards Update 2023-09 [Member] Remaining maturity Derivative, Remaining Maturity Deposits Total deposits Total deposits Deposits Customer Loan Swaps - Commercial Customer [Member] Customer loan swaps - commercial customer. Lessee operating lease expiration beginning year. Lessee Operating Lease Expiration Beginning Year Operating leases expiration beginning year Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 2025 / 2024 Other Comprehensive Income Loss Reclassification Adjustment From AOCI For Interest Expense Income On Swaps Tax Other comprehensive income (loss) reclassification adjustment from AOCI for interest expense (income) on swaps, tax. Tax effect Preferred Stock, Shares Authorized Preferred Stock, Shares Authorized Schedule of Realized Gain (Loss) [Table Text Block] Summary of sales proceeds, principal payments received and gross realized gains and losses on available for sale securities Derivative Contract [Domain] Derivative Contract Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Net Unrealized Losses on Cash Flow Hedges [Member] Fed Funds borrowing [Member] Fed Funds Borrowing [Member] Fed Funds Borrowing [Member] OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Unrealized holding gains (losses) on securities available-for-sale arising during the period, net of income taxes of $242 ,$-0-, $(58) and $(9), respectively Compensation and Employee Benefit Plans [Text Block] Employee Benefits Antidilutive shares that are not included in computation of diluted earnings per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Investment in Federal Home Loan Bank Stock [Member] Federal Home Loan Bank stock [Member] Financial Asset, 60 to 89 Days Past Due [Member] 60-89 Days Past Due [Member] Number of operating segment Number of Operating Segments AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Other Comprehensive Loss [Member] Corporate Subordinated Debt Member. Corporate Subordinated Debt [Member] Corporate subordinated debt [Member] Federal Reserve Bank Advances [Member] Deferred Directors Supplemental Retirement Plan [Member] Deferred Directors Supplemental Retirement Plan [Member] Deferred Directors Supplemental Retirement Plan Deferred Directors Supplemental Retirement Plan [Member] Average fixed interest rate Derivative, Average Fixed Interest Rate Employee Stock Ownership Plan (ESOP), Number of Allocated Shares Allocated Derivative Liabilities, Net Amounts Recognized Derivative Liability, Subject to Master Netting Arrangement, after Offset Interest-Bearing Deposits [Member] Interest-bearing time deposits with other banks [Member] Noninterest Income Total non-interest income Change in Accounting Principle, Accounting Standards Update, Early Adoption [true false] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Interest Receivable Accrued interest receivable Servicing Asset, Measurement Input Mortgage Servicing Rights, Measuring Inputs Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Weighted Average Exercise Price Forfeited Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost Total U.S. Government-sponsored enterprises obligations, municipal bonds, corporate debt and corporate subordinated debt, Amortized Cost Derivative instrument. 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Debt Securities, Available-for-Sale, Pledged As Collateral Stock options at end of year Stock options at beginning of year Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Measurement Input, Discount Rate [Member] Discount Rate [Member] Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 2022 / 2021 Hedging Designation [Axis] Hedging Designation Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Gross Unrealized Losses Hedging Designation [Domain] Hedging Designation Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum Minimum Capital Requirement, Total Capital (to risk-weighted assets) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares Non-vested at beginning of period Non-vested at end of period Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Document Type Document Type Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum Minimum Capital Requirement Ratio, Tier 1 Capital (to risk-weighted assets) Effect of change in fair value of interest rate swaps. 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Unadvanced Portions Of Loans [Member] Unadvanced portions of loans [Member] Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual Actual Ratio, Tier 1 Capital (to risk- weighted assets) Significant Accounting Policies [Line Items] Significant accounting policies. Internal Credit Assessment [Axis] Internal Credit Assessment Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual Actual Ratio, Common Equity Tier 1 (to risk-weighted assets) Financing Receivable, Allowance for Credit Loss, Recovery Recoveries Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) Deferred Compensation Liability, Current and Noncurrent Deferred compensation liability Deferred Compensation Liability, Current and Noncurrent, Total Deferred Compensation Liability Current and Noncurrent Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax Net amortization of bond premiums Two Thousand Twenty Four Equity Incentive Plan [Member] Two thousand twenty four equity incentive plan. 2024 Equity Incentive Plan [Member] Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 2024 / 2023 Asset Class [Domain] Asset Class Other Comprehensive Income Loss Reclassification Adjustment From AOCI For Interest Expense Income On Swaps Net Of Tax Other comprehensive income (loss) reclassification adjustment from AOCI for interest expense (income) on swaps, net of tax. 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New England Program [Member] New England Program [Member] Retirement Plan Type [Domain] Retirement Plan Type Federal Home Loan Bank Advances [Domain] Federal Home Loan Bank Advances Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Schedule of Total Minimum Lease Payments Due In Future Periods For Lease Agreements FHLB Callable Date September Eight Two Thousand Twenty Six [Member] FHLB callable date September 8, 2026. FHLB Callable Date September 8, 2026 [Member] Retained Earnings [Member] Retained Earnings [Member] Payment for Acquisition, Loan, Held-for-Investment Loan purchases Banking Regulation, Total Risk-Based Capital, Well Capitalized, Minimum Minimum Capital Required to be Well Capitalized, Total Capital (to risk-weighted assets) Entity Registrant Name Entity Registrant Name Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Accounting Policies [Abstract] Business Combination, Consideration Transferred, Equity Interest, Type [Axis] Depreciation Depreciation and amortization Depreciation, Total Substandard [Member] Substandard [Member] Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total Net loss Lessee, Operating Lease, Renewal Term Operating lease, renewal term Ending Balance Beginning Balance Servicing Asset at Fair Value, Amount Consumer Portfolio Segment [Member] CON [Member] Lessee, Operating Lease, Liability, to be Paid, Year Five Operating lease, 2031 Entity Address, Address Line One Entity Address, Address Line One Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Share-based payment arrangement, exercise of option Payments for (Proceeds from) Short-Term Investments Payments for (Proceeds from) Short-Term Investments, Total Net proceeds from short-term FHLB advances Revolving Loans Amortized Cost Basis Financing Receivable, Revolving Advance from Federal Home Loan Bank Principal Amounts Advances through FLHB Advance from Federal Home Loan Bank, Total Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-Term Interest on borrowings Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Revised fixed annual retirement benefits, payable Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total Fair Value, Recurring and Nonrecurring [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Finance Lease, Liability, to be Paid, Year Five Finance lease, 2031 Supplemental Cash Flow Information [Abstract] Supplemental disclosure of cash flow information: Increase decrease in time deposit. 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Deferred Taxes Deferred taxes Pension Plan [Member] Pension Plan [Member] Unearned Compensation-ESOP Member. Unearned Compensationesop [Member] Unearned Stock Compensation [Member] Cash Paid For Amounts Included In Measurement Of Lease Liabilities [Abstract] Cash Paid For Amounts Included In Measurement Of Lease Liabilities [Abstract] Cash paid for amounts included in the measurement of lease liabilities: Proceeds from loans sold from portfolio. Proceeds From Loans Sold From Portfolio Proceeds from loans sold Investment, Name [Domain] Stock options unrecognized compensation expense Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Interest Income (Expense), Operating Net interest and dividend income Increase (Decrease) in Deferred Compensation Increase in deferred compensation liability Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Forfeited Proceeds from sales, maturities and principal payments received on securities available-for-sale Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale, Total Proceeds from principal payments received on securities available-for-sale Retirement Plan Name [Axis] Retirement Plan Name Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Capital Adequacy, Minimum Minimum Capital Requirement, Common Equity Tier 1 (to risk-weighted assets) Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Share based compensation arrangement by share based payment award equity instruments other than options grants in period grant date fair value. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Grant Date Fair Value Total fair value related to stock options granted Change in Accounting Principle, Accounting Standards Update, Adoption Date Change in accounting principle, accounting standards update, adoption date Other Assets Other assets Other Assets, Total Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Pentegra DB Plan [Member] Pentegra Db Plan [Member] Pentegra DB Plan [Member] Treasury Stock, Shares, Acquired Treasury stock activity (shares) Treasury stock activity (shares) Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Finance Lease, Liability, to be Paid, Year Four Finance lease, 2030 2021 Equity Incentive Plan [Member]. Two Thousand Twenty One Equity Incentive Plan [Member] 2021 Equity Incentive Plan [Member] Defined Benefit Plan, Plan Assets, Contributions by Employer Defined Benefit Plan, Plan Assets, Contributions by Employer (Loss) earnings per share: Earnings Per Share [Abstract] Income (loss) per share: Marketing Expense Marketing Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End Interest Rates Gain (Loss) on Sales of Loans, Net Gain on sale of loans Gain on sale of loans Gain (Loss) on Sales of Loans, Net, Total Share-Based Payment Arrangement, Option, Activity [Table Text Block] Summary of Non-vested Stock Options Outstanding Time Deposit Maturities, Year Three 2029 Conversion, net of cost Stock Issued During Period, Value, Conversion of Convertible Securities, Net of Adjustments Stock Issued During Period, Value, Conversion of Convertible Securities, Net of Adjustments, Total Lessee, Operating Lease, Liability, to be Paid, Year Four Operating lease, 2030 Time Deposit Maturities, Year Four 2030 Banking Regulation, Regulatory Capital Requirement, Compliance [Table] Plan Name [Axis] Plan Name Subsequent Event Type [Axis] Financing Receivable Credit Quality Indicators [Table Text Block] Financing Receivable Credit Quality Indicators Equity [Abstract] Stock-based Awards [Member] Share-Based Payment Arrangement [Member] Employee Stock Ownership Plan (ESOP), Number of Committed-to-be-Released Shares Number of shares committed to be released each year, ESOP Committed to be allocated Measurement Frequency [Axis] Measurement Frequency Defined Benefit Plan, Funded Percentage Funded percentage Interest and Fee Income, Financing Receivable Interest and fees on loans Interest and Fee Income, Loans and Leases, Total Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum Minimum Capital Requirement Ratio, Total Capital (to risk-weighted assets) Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash flows from financing activities: Effect of change in fair value of securities available for sale. Effect Of Change In Fair Value Of Securities Available For Sale [Abstract] Effect of change in fair value of securities available-for-sale: Net amortization of bond premium Amortization of Debt Discount (Premium) Amount of noncash expense for share-based payment arrangement adjustments. Adjustments To Share Based Compensation Expense Stock based compensation Payment to counterparty in swap termination fee Payment To Counterparty In Swap Termination Fee Payment to counterparty in swap termination fee. Financing Receivable, Past Due [Table Text Block] Past Due Financing Receivables Banking Regulation, Tier 1 Risk-Based Capital, Well Capitalized, Minimum Minimum Capital Required to be Well Capitalized, Tier 1 Capital (to risk-weighted assets) Treasury Stock, Shares outstanding It represents the number of treasury stock shares outstanding. Treasury Stock Shares Outstanding Treasury Stock Shares Outstanding Accrued interest payable Interest Payable Derivative Liabilities, Financial Instruments Pledged (Received) Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset Allowance for credit losses on OBS credit exposures Allowance for credit losses for off-balance sheet Off-Balance-Sheet, Credit Loss, Liability Off-Balance-Sheet, Credit Loss, Liability, Ending Balance Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance Liabilities [Abstract] Financial Liabilities: Interest and Dividend Income, Operating Total interest and dividend income Interest-Bearing Deposit Liabilities Interest bearing deposits Interest-Bearing Deposit Liabilities, Total Entity Tax Identification Number Entity Tax Identification Number Lessee operating lease expiration ending year. Lessee Operating Lease Expiration Ending Year Operating leases expiration ending year Financial Liabilities Fair Value Disclosure [Abstract] Financial Liabilities: MF [Member] Multifamily Portfolio Segment [Member] MF [Member] Derivative Instrument [Axis] Derivative Instrument Equity, Class of Treasury Stock [Line Items] Equity Class Of Treasury Stock [Line Items] Equity Component [Domain] Equity Component Provision (benefit) for loan losses. (Release) provision for credit losses on loans Loans (Release) provision for credit losses Derivative [Member] Derivatives [Member] Entity Address, City or Town Entity Address, City or Town Forfeiture of stock compensation Stock Issued During Period, Value, Restricted Stock Award, Forfeitures Forfeiture of stock compensation Tax effect Other Comprehensive Income Loss Reclassification Adjustment From AOCI For Gains On Termination Of Interest Rate Swaps Tax Other Comprehensive Income Loss Reclassification Adjustment From AOCI For Gains On Termination Of Interest Rate Swaps Tax Business Combination [Axis] Measurement Input Type [Domain] Measurement Input Type Income Tax Paid, after Refund Received Income Taxes Paid, Net, Total Cash paid for income taxes Servicing Assets and Servicing Liabilities, Fair Value, Valuation Techniques Fair value valuation techniques Accrued interest receivable Accrued Interest Receivable [Member] Accrued interest receivable [member] Residential Mortgage-Backed Securities [Member] Residential mortgage backed securities [Member] Occupancy, Net Occupancy expense Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Impaired Financing Receivables [Table Text Block] Impaired Financing Receivables Derivative Assets, Cash Collateral Pledged (Received) Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset Federal Home Loan Bank, Advance, Branch of FHLBank [Table Text Block] Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank Federal Home Loan Bank, Advance, Branch of FHLBank, Interest Rate Interest rate Segment Reporting, Expense Information Used by CODM, Description Antidilutive Security, Excluded EPS Calculation [Table] Federal Home Loan Bank, Advance, Branch of FHLBank [Table] Brokered deposits. Brokered Deposits Brokered time deposits Derivative Assets, Gross Amounts Recognized Derivative assets, fair value Derivative Asset, Subject to Master Netting Arrangement, before Offset Pension Cost (Reversal of Cost) Pension Cost (Reversal of Cost) Statement [Table] Statement [Table] Employee Stock Ownership Plan (ESOP), Plan [Domain] Employee Stock Ownership Plan (ESOP), Plan Debt Securities, Available-for-Sale, Realized Gain (Loss) Net realized gains (losses) Lease, Cost Total lease cost Equity compensation expense Share-Based Payment Arrangement, Expense Equity compensation (Loss) income before income tax (benefit) expense Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income (loss) before income tax (benefit) expense Derivative Assets, Gross Amounts Offset Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Off-Balance-Sheet, Credit Loss, Liability [Abstract] Entity Shell Company Entity Shell Company Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Net cash provided (used) by investing activities Statement [Line Items] Statement [Line Items] Collateral Held [Axis] Collateral Held Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Represents increase decrease deferred fee. Increase Decrease In Deferred Fee On Loans Decrease (increase) in deferred costs on loans Stock repurchase Stock Repurchase During Period Shares Esop Stock Repurchase During Period Shares Esop Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Vested Maximum [Member] Maximum [Member] Interest Income (Expense), after Provision for Loan Loss Net interest and dividend income after (release) provision for credit losses Proceeds from sales, calls and maturities received on securities available-for-sale Proceeds from Sale of Debt Securities, Available-for-Sale Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Included in net income (loss) Debt Disclosure [Abstract] Finance Lease, Liability, to be Paid Finance lease, Total minimum lease payments Derivative Asset, Net Amount Derivative Asset, Net Amount Derivative Asset, Subject to Master Netting Arrangement, after Offset and Deduction Branch office expires in August 2027. Branch Office Expires in August Two Thousand and Twenty Seven [Member] Branch Office Expires in August 2027 Increase (Decrease) in Other Operating Liabilities Increase (Decrease) in Other Operating Liabilities, Total Decrease in other liabilities Increase in other liabilities Number of standalone branches Number of Standalone Branches Number of standalone branches Business Combination [Domain] Loans and Allowance for Credit Losses on Loans Financing Receivables [Text Block] Financing Receivable, 90 Days or More Past Due, Still Accruing Loans past due over 90 days still accruing interest Hedged Asset, Statement of Financial Position [Extensible Enumeration] Hedged Asset, Statement of Financial Position [Extensible Enumeration] Noninterest Expense Total non-interest expense Federal Home Loan Bank Borrowings [Member] Federal Home Loan Bank Borrowings [Member] Subsequent Events [Abstract] Asset Class [Axis] Asset Class Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Share price Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Granted Earnings Per Share, Basic [Abstract] Income (loss) earnings per common share - basic: Branch Office and Certain Equipment [Member] Branch Office And Certain Equipment [Member] Branch office and certain equipment. Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment Liabilities measured at fair value Other liabilities, at fair value Liabilities, Fair Value Disclosure Liabilities, Fair Value Disclosure, Total Withdrawal liability paid Withdrawal Liability Paid Withdrawal liability paid. Represents loan originations and principal collections. Proceeds From Repayments From Collection Of Loans Loan originations and principal collections, net Leases [Abstract] Document Fiscal Year Focus Document Fiscal Year Focus AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Net Unrealized Losses on AFS Securities [Member] Derivative Assets, Financial Instruments Pledged (Received) Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset Common Stock, Shares, Outstanding Common stock, number of shares outstanding Common Stock, Shares, Outstanding, Beginning Balance Common Stock, Shares, Outstanding, Ending Balance Federal Home Loan Bank Advances Six [Member] Federal home loan bank advances six member. Federal Home Loan Bank Advances Six [Member] Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Well Capitalized, Minimum Minimum Capital Required to be Well Capitalized, Common Equity Tier 1 (to risk-weighted assets) Financial Instruments [Domain] Financial Instruments First Seacoast Bank Employee Stock Ownership Plan [Member] First Seacoast Bank Employee Stock Ownership Plan [Member] First Seacoast Bank Employee Stock Ownership Plan [Member] Statement of Comprehensive Income [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Aggregate Intrinsic Value Exercisable at end of year Other comprehensive income loss reclassification adjustment from AOCI for sale and for write down of securities, net of tax. Other Comprehensive Income Loss Reclassification Adjustment From A O C I For Sale And For Write Down Of Securities Net Of Tax Reclassification adjustment for net amortization of bond premiums included in net income (loss), net of income taxes of $17, $36, $47 and $78, respectively Related Party [Member] Forecast [Member] Scenario Forecast [Member] Entity Ex Transition Period Entity Ex Transition Period Collateral Held [Domain] Collateral Held Collateral pledged Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged Change in Accounting Principle, Accounting Standards Update, Adopted [true false] Change in accounting principle, accounting standards update, adopted Percentage Of Amount Borrowed. Percentage Of Amount Borrowed Percentage of purchase price common stock Financing Receivable, Past Due [Line Items] Shares Repurchased Under Stock Repurchase Program Shares repurchased under stock repurchase program. Shares repurchased under stock repurchase program Earnings Per Share, Basic, Other Disclosure [Abstract] Weighted Average Shares: Stock or Unit Option Plan Expense ESOP expense Assets Sold under Agreements to Repurchase, Type [Domain] Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Reclassification adjustment for net interest expense on swaps included in net income (loss), income tax Operating lease, Total minimum lease payments Lessee, Operating Lease, Liability, to be Paid Future lease payments Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Less than 12 Months, Fair Value ATM related equipment expires in August 2030. ATM Related Equipment Expires in August Two Thousand and Thirty [Member] ATM Related Equipment Expires in August 2030 Leased ATMs Expires in August 2030 Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum Minimum Capital Requirement, Tier 1 Capital (to average assets) Treasury Stock, Value Treasury Stock, Value, Total Treasury stock, at cost: 612,221 and 610,663 shares outstanding as of June 30, 2026 and December 31, 2025, respectively Additional Paid in Capital, Common Stock Additional paid-in capital Security Exchange Name Security Exchange Name Measurement Input Type [Axis] Measurement Input Type Derivative Liabilities, Gross Amounts Offset Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Finance Lease, Weighted Average Discount Rate, Percent Finance lease, Weighted average discount rate Related and Nonrelated Parties [Axis] Measurement Input, Default Rate [Member] Default Rate [Member] Recently Adopted Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Amount of Gain Recognized in Income Derivative, Gain (Loss) on Derivative, Net Derivative, Gain (Loss) on Derivative, Net, Total Purchase or payments to acquire available for sale securities. Purchase Or Payments To Acquire Available For Sale Securities Purchase of securities available-for-sale Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Entity Address, State or Province Entity Address, State or Province Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Weighted average future recognition period Schedule of Notional Amounts of Financial Instruments with Off-Balance Sheet Credit Risk Schedule of Fair Value, off-Balance-Sheet Risks [Table Text Block] Designated as Hedging Instrument [Member] Derivatives Designated as Hedging Instruments [Member] Designated as Hedging Instrument [Member] Continuing Involvement with Transferred Financial Assets, Principal Amount Outstanding Transferred financial assets principal amount outstanding Supplemental Employee Retirement Plan [Member] Supplemental Employee Retirement Plan [Member] Operating Lease, Right-of-Use Asset Operating lease, Right-of-use asset HELOC [Member] Home Equity Line Of Credit Portfolio Segment [Member] HELOC [Member] Amendment Flag Amendment Flag Financial Asset, Aging [Axis] Financial Asset, Aging Summary of Derivative Positions Offset in Consolidated Balance Sheets Schedule of Derivative Instruments [Table Text Block] Right-of-Use Asset Obtained in Exchange for Operating Lease Liability ROU assets and lease liability Operating leases Share-Based Payment Arrangement [Text Block] Stock Based Compensation Retirement Plan Name [Domain] Retirement Plan Name Noninterest Income [Abstract] Non-interest income: Derivative Assets, Net Amounts Recognized Derivative Asset, Subject to Master Netting Arrangement, after Offset Actual Ratio, Tier 1 Capital (to average assets) Banking Regulation, Tier 1 Leverage Capital Ratio, Actual Financing Receivable, Past Due [Table] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment Debt Securities, Available-for-Sale [Abstract] Securities available-for-sale: Loans [Member] Loans [Member] City Area Code City Area Code Internal Credit Assessment [Domain] Internal Credit Assessment Credit Loss [Abstract] Collateralized Mortgage Obligations [Member] Collateralized mortgage obligations issued by the FHLMC, FNMA and GNMA [Member] Banking Regulation, Total Risk-Based Capital Ratio, Actual Actual Ratio, Total Capital (to risk- weighted assets) OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax Unrealized holding gains (losses) on securities available-for-sale arising during the period, income taxes Rent Increases Per Square Foot Each Of First Five Years Rent increases per square foot each of first five years. Rent Increases Per Square Foot Each Of First Five Years Liability, Defined Benefit Plan Liability, Defined Benefit Plan Liability, Defined Benefit Plan, Total Derivatives Not Designated as Hedging Instruments [Table Text Block] Summary of Derivative Financial Instruments Not Designated as Hedging Instruments on Consolidated Statements of Income (Loss) Federal Home Loan Bank Stock Federal Home Loan Bank stock Accounts and Financing Receivables [Table] Allowance for Loan and Lease Losses, Writeoff Charge-offs Securities available for sale Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Other comprehensive income (loss) before reclassification Financing Receivable, Credit Quality Indicator [Line Items] Hedging Relationship [Axis] Hedging Relationship Mortgage servicing rights [Member] Mortgage Servicing Rights Mortgage Servicing Rights [Member] Cumulative fair value hedging adjustment - loans Noncash Activities Cumulative Fair Value Hedging Adjustment Noncash activities cumulative fair value hedging adjustment. Credit Loss, Financial Instrument [Text Block] Financial Instruments with Off-Balance Sheet Credit Exposures Other Liabilities Other liabilities Other Liabilities, Total Common stock, price per share Common Stock, Par or Stated Value Per Share Common stock par value per share Banking Regulation, Tier 1 Risk-Based Capital, Actual Actual, Tier 1 Capital (to risk- weighted assets) Finance Lease, Liability, to be Paid, Year One Finance lease, 2027 Accrued interest payable [member] Accrued Interest Payable [Member] Accrued interest payable member. Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Fully vested and expected to vest Business Combination Converted Into Right to Receive in Cash Business combination converted into right to receive in cash. Converted into right to receive in cash Short-Term Debt, Type [Domain] Short-Term Debt, Type Accounting Standards Update and Change in Accounting Principle [Table Text Block] Summary of Impact of Adoption Noncash Investing and Financing Items [Abstract] Noncash activities: US Government-sponsored Enterprises Debt Securities [Member] U.S. Government-sponsored enterprises obligations [Member] Corporate Structure. Corporate Structure Policy [Text Block] Corporate Structure Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total Time Deposit Maturities, Year One 2027 Represents mortgagors tax escrow. Mortgagors Tax Escrow Mortgagors’ tax escrow Deposits, Money Market Deposits Money market deposits Employee Stock Ownership Plan (ESOP) Disclosures [Table Text Block] Schedule of Company Compensation Expense for the ESOP Derivative Instruments and Hedging Activities Disclosure [Abstract] Defined Contribution Plan, Cost Defined Contribution Plan, Cost Trading Symbol Trading Symbol Finance lease,Weighted average lease term remaining (in years) Finance Lease, Weighted Average Remaining Lease Term Finance Lease, Right-of-Use Asset, Amortization Amortization of right-of-use assets Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] Subsequent Event [Table] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted-Average Remaining Contractual Term Weighted Average Remaining Contractual Term Exercisable at end of year Restricted stock awards granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Granted Entity Emerging Growth Company Entity Emerging Growth Company Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Provision for credit losses for off-balance sheet Off-balance sheet credit exposures Provision (release) for credit losses for off-balance sheet Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions More than 12 Months, Number of Securities Receivables [Abstract] Phase [Domain] Phase Plan Name [Domain] Plan Name Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Due after ten years, Amortized Cost Finance lease liability Finance Lease, Liability Finance lease liability Deposits [Abstract] Deposits: NOW and demand deposits Deposits negotiable order of withdrawal and demand deposits. Deposits Negotiable Order Of Withdrawal Now And Demand Deposits Cover [Abstract] Deposits [Line Items] Deposits. Percentage of Common stock repurchase Percentage Of Common Stock Repurchase Percentage of repurchase of Common Stock Bank Owned Life Insurance Bank Owned Life Insurance [Member] Bank-owned life insurance [Member] Federal Home Loan Bank Advances One [Member] Federal Home Loan Bank Advances One [Member] Federal Home Loan Bank Advances One [Member] Number of properties owned and operated Number of Properties Owned and Operated Number of properties owned and operated Operating Lease, Weighted Average Remaining Lease Term Operating lease,Weighted average lease term remaining (in years) Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged assets/(liabilities) Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities) Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) Nonvested Restricted Stock Shares Activity [Table Text Block] Summary of Non-vested Restricted Shares Outstanding Professional Fees Professional fees and assessments Number of holdings of securities aggregate carrying value exceeded ten percentage of equity. Number Of Holdings Of Securities Aggregate Carrying Value Exceeded Ten Percentage Of Equity Number of holdings of securities aggregate carrying value exceeded ten percentage of stockholders' equity Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Balance at the end of the period Balance at the beginning of the period Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Disclosure of Regulatory Matters Disclosure Of Regulatory Matters [Abstract] Share-Based Payment Arrangement, Noncash Expense Share based expense recognized Share-Based Payment Arrangement, Noncash Expense, Total Deposit Liabilities, Type [Table Text Block] Deposit Liabilities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustments to reconcile net loss to net cash provided by operating activities: Deposits [Table] Deposits. Financing Receivable, Allowance for Credit Loss [Table] Fair Value Disclosures [Abstract] Represents loan servicing fee income. Loan Servicing Fee Income Loan servicing income Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) Total unrealized net gains (losses) included in net income (loss) related to assets still held Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Due after five years through ten years, Fair Value Accumulated Other Comprehensive Income (Loss) [Table] Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash (used) provided by financing activities Office and branch. Office and Branch [Member] Fair Value, Nonrecurring [Member] Fair Value, Nonrecurring [Member] Net Income (Loss) Available to Common Stockholders, Basic, Total Net Income (Loss) Available to Common Stockholders, Basic Net income (loss) applicable to common shareholders Interest Rate Swap [Member] Interest Rate Swap [Member] Treasury stock purchases. Treasury Stock Purchases Treasury stock purchases Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Number of Shares Forfeited Entity Filer Category Entity Filer Category Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Weighted Average Exercise Price Fully vested and expected to vest Customer Loan Swaps [Member] Customer Loan Swaps [Member] Customer Loan Swaps [Member] ASU 2023-07 [Member] Accounting Standards Update 2023-07 [Member] Accounting Standards Update 2023-07 Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds Banks unused remaining borrowing capacity Lease Contractual Term [Axis] Interest Expense, Operating and Nonoperating [Abstract] Interest expense: Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Land, building and equipment, net Property, Plant and Equipment, Net, Total Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer More than 12 Months, Fair Value Securities or Other Assets Sold under Agreements to Repurchase [Axis] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption Unallocated Financing Receivables [Member] Unallocated [Member] Employee salary incremental percent. Employee Salary Incremental Percent Employee salary incremental percent Shares, Outstanding Ending Balance (shares) Beginning Balance (shares) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Change in interest rate swaps, net of income taxes of $-0-, $2, $1 and $(3), respectively Derivative Liabilities, Gross Amounts Recognized Derivative liabilities, fair value Derivative Liability, Subject to Master Netting Arrangement, before Offset Federal Deposit Insurance Corporation Premium Expense Deposit insurance fees Amortization of ESOP Award ESOP shares earned Revolving Loans Converted to Term Financing Receivable, Revolving, Converted to Term Loan Fhlb callable date october twenty nine thousand twenty four member. FHLB Callable Date October Twenty Nine Two Thousand Twenty Four [Member] FHLB Callable Date October 29, 2024 [Member] Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 2023 / 2022 Entity Address, Postal Zip Code Entity Address, Postal Zip Code Statement of Financial Position [Abstract] Finance Lease, Principal Payments Financing cash flows from finance lease Principal payments on finance lease liability Principal payments on finance lease Principal payments on finance lease Local Phone Number Local Phone Number