Exercisable SARs (in dollars per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option, Exercisable, Weighted Average Exercise Price Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option, Exercisable, Weighted Average Exercise Price Amortization Finite-Lived Intangible Assets, Accumulated Amortization Revision of Prior Period [Axis] Revision of Prior Period [Axis] Debt securities and Equity securities Investment, Policy [Policy Text Block] Schedule of Debt Securities, Available-for-Sale Debt Securities, Available-for-Sale [Table Text Block] Schedule of Short-Term Debt Schedule of Short-Term Debt [Table Text Block] Subordinated debentures and trust preferred securities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Subordinated Debentures And Trust Preferred Securities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Subordinated Debentures And Trust Preferred Securities Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Schedule of Estimated Future Benefit Payments Schedule of Expected Benefit Payments [Table Text Block] Subordinated debentures owed to unconsolidated subsidiary trusts Subordinated Debt Owed To Unconsolidated Subsidiary Trusts [Member] Subordinated Debt Owed To Unconsolidated Subsidiary Trusts Award Timing Predetermined Award Timing Predetermined [Flag] Cash paid for fractional shares Business Combination , Cash Paid For Fractional Shares Business Combination , Cash Paid For Fractional Shares Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits Investments in qualified affordable housing projects, amortization expense Investment Program, Proportional Amortization Method, Applied, Amortization Expense Entity File Number Entity File Number Paid-in Capital Additional Paid-in Capital [Member] Low income housing tax credits, net amortization Effective Income Tax Rate Reconciliation, Tax Credit, Amount Goodwill and intangibles Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Goodwill And Intangible Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Goodwill And Intangible Assets Reclassification adjustment for loss (gain) on securities, net of tax of $34 for 2025, $312 for 2024, and ($24) for 2023 Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Tabular List, Table Tabular List [Table Text Block] Expected Burke & Herbert common stock to be issued (in shares) Business Acquisition, Expected Equity Interest Issued or Issuable, Number of Shares Business Acquisition, Expected Equity Interest Issued or Issuable, Number of Shares Time deposits, individual retirement account Interest-Bearing Domestic Deposit, Other Time Deposit Adoption of new accounting standards and Newly issued not yet adopted accounting standards New Accounting Pronouncements, Policy [Policy Text Block] Finance Leases Finance Lease, Liability [Abstract] Schedule of Aggregate Loan Balances with Related Parties Schedule of Related Party Transactions [Table Text Block] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Other Other Expenses Measurement Basis [Axis] Measurement Basis [Axis] Adjustment to Compensation: Adjustment to Compensation [Axis] Transactions with Related Parties Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Revenue from Contracts with Customers Revenue from Contract with Customer [Text Block] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Recoveries Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Shares purchased (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Minimum Required for Capital Adequacy Purposes (includes applicable capital conservation buffer) Ratio Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum Current expense Current Income Tax Expense (Benefit) Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] Adjustment to Compensation, Amount Adjustment to Compensation Amount Summit Financial Group, Inc Summit Financial Group, Inc [Member] Summit Financial Group, Inc Pension Plan Pension Plan [Member] (Increase) decrease in other assets Net change in other assets Increase (Decrease) in Other Operating Assets Principles of consolidation Consolidation, Policy [Policy Text Block] Share-based compensation expense Share-based compensation Compensation 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Text Block] Common stock, authorized (in shares) Common Stock, Shares Authorized Financial assets Financial Assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Recurring Fair Value, Recurring [Member] Concentration of credit risk Concentration Risk, Credit Risk, Policy [Policy Text Block] To Be Well Capitalized Under Prompt Corrective Action Regulations Amount Banking Regulation, Tier 1 Leverage Capital, Well Capitalized, Minimum Unrealized gains on interest rate swaps Deferred Tax Liabilities, Derivatives Liabilities and Shareholders' Equity Liabilities and Equity [Abstract] To Be Well Capitalized Under Prompt Corrective Action Regulations Amount Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Well Capitalized, Minimum Cover [Abstract] Interest-bearing deposits with banks Cash and Cash Equivalents, Fair Value Disclosure Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Maximum Maximum [Member] Transfers to OREO Real Estate Owned, Transfer to Real Estate Owned Useful lives (in years) Finite-Lived Intangible Asset, Useful Life Rate of compensation increase Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase Total core deposit intangible Total Finite-Lived Intangible Assets, Net After Ten Years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Operating lease expense Sale and Leaseback Transaction, Gain (Loss), Net To Be Well Capitalized Under Prompt Corrective Action Regulations Amount Banking Regulation, Tier 1 Risk-Based Capital, Well Capitalized, Minimum Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Sales of real estate owned Other Real Estate, Disposals Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule of Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Accrued interest and other liabilities Interest Payable And Other Liabilities Interest Payable And Other Liabilities Loan commitments and related financial instruments Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Retirement Benefits [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Other assets Other Assets [Member] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Actual Ratio Banking Regulation, Tier 1 Leverage Capital Ratio, Actual Finance lease cost Income and Expenses, Lessee [Abstract] Schedule of Long-Term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Proceeds from sales of property and equipment Proceeds from Sale of Property, Plant, and Equipment Purchase accounting adjustments Deferred Tax Liabilities, Purchase Accounting Adjustments Deferred Tax Liabilities, Purchase Accounting Adjustments Statement of Stockholders' Equity [Abstract] Unrealized holding gain (loss) on cash flow hedge, net of tax of $(195) for 2025, $(920) for 2024, and $75 for 2023 Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Unrealized losses on securities available-for-sale Deferred Tax Asset, Debt Securities, Available-for-Sale, Unrealized Loss Total interest expense Interest expense Interest Expense, Operating Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Commercial letters of credit Letter of Credit [Member] Outstanding amount for short-term debt Short-Term Debt, Average Outstanding Amount Reclassification adjustment for loss (gain) on fair value hedge, net of tax of $37 for 2025, $37 for 2024, and $(215) for 2023 Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, after Tax Interest expense Finance Lease, Interest Expense Related Allowance Financing Receivable, Allowance for Credit Loss, Individually Evaluated Interest paid to depositors Interest Paid, Deposits Interest Paid, Deposits Document Fiscal Period Focus Document Fiscal Period Focus Residential mortgage backed — agency Residential mortgage backed - agency Residential Mortgage-Backed Securities - Agency [Member] Residential Mortgage-Backed Securities - Agency Annual salary increase Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase Pension accrual Deferred Tax Liabilities, Compensation And Benefits, Pensions Deferred Tax Liabilities, Compensation And Benefits, Pensions Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Award Timing Method Award Timing Method [Text Block] Total Amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Furniture and Fixtures Furniture and Fixtures [Member] Award Type [Axis] Award Type [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] SFG capital trust issued Proceeds from Issuance of Mandatory Redeemable Capital Securities Consolidated Burke & Herbert Financial Services Corp. Parent Company [Member] Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Tax-exempt securities Interest Income, Securities, Operating, Tax Exempt Accrued expenses and other liabilities Accrued Liabilities and Other Liabilities Entity Address, City or Town Entity Address, City or Town Finance lease weighted average discount rate Finance Lease, Weighted Average Discount Rate, Percent Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Change in fair value of loans held-for-sale Gain (Loss) On Loans Held-For-Sale, Fair Value Adjustment Gain (Loss) On Loans Held-For-Sale, Fair Value Adjustment Amortization of other intangible assets Amortization Of Intangible Assets And Right-Of-Use Assets Amortization Of Intangible Assets And Right-Of-Use Assets Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Time deposits, at or above FDIC insurance limit Time Deposits, at or Above FDIC Insurance Limit Allowance for credit losses Credit Loss, Financial Instrument [Policy Text Block] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Fully diluted transaction value Total purchase price consideration Business Combination, Consideration Transferred Nontaxable income from company owned life insurance Effective Income Tax Rate Reconciliation, Tax Exempt Income, Life Insurance, Amount Effective Income Tax Rate Reconciliation, Tax Exempt Income, Life Insurance, Amount Short-term borrowings Interest Expense, Short-Term Borrowings Entity Emerging Growth Company Entity Emerging Growth Company 2028 Long-Term Debt, Maturity, Year Three Actual Ratio Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual Finance lease weighted average remaining lease term (years) Finance Lease, Weighted Average Remaining Lease Term Parent Company Financial Information Condensed Financial Information of Parent Company Only Disclosure [Text Block] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Unfunded Loan Commitment Undrawn Credit Line Available Unfunded Loan Commitment [Member] Service charges and fees Revenue from Contract with Customer, Including Assessed Tax 2026 Defined Benefit Plan, Expected Future Benefit Payment, Year One Non-interest-bearing Non-Interest Bearing [Member] Non-Interest Bearing Investment, proportional amortization method, elected statement of financial position [extensible enumeration] Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration] Total non-interest income Noninterest Income Less: discount Finance Lease, Liability, Undiscounted Excess Amount Common stock, outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Defined benefit pension plans: Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent [Abstract] (Gain) on loans held-for-sale Gain (Loss) on Sales of Loans, Net Capital expenditures Other Real Estate, Improvements Loans Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Non-interest expense Noninterest Expense [Abstract] Schedule of Components of Non-interest Income Disaggregation of Revenue [Table Text Block] Cash and due from banks Cash and due from banks Cash and Due from Banks Investment program, proportional amortization method, elected, income tax credit and other income tax benefit, before amortization expense Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization Expense Legal expense Legal Fees Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Current Expense: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] 90 Days Past Due & Still Accruing Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing Shares issued during period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period Securities, held-to-maturity, at amortized cost Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Debt Securities, Held To Maturity, At Amortized Cost Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Debt Securities, Held To Maturity, At Amortized Cost Owner-occupied commercial real estate Owner-occupied commercial real estate Owner-Occupied Commercial Real Estate [Member] Owner-Occupied Commercial Real Estate Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Due in 2026 Short-Term Debt, Maturity, Year One Short-Term Debt, Maturity, Year One Changes in benefit obligation: Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Tax-exempt loans, including fees Interest And Fee Income, Loans And Leases, Tax Exempt Interest And Fee Income, Loans And Leases, Tax Exempt Pledged Status [Domain] Pledged Status [Domain] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Total Total Income tax expense 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[Axis] Hedging Relationship [Axis] Premises and equipment, gross Property, Plant and Equipment, Gross Allowance established for acquired PCD loans Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Loan Purchased Sale leaseback transaction, lease terms Sale Leaseback Transaction, Lease Terms Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Schedule of Stock Appreciation Rights and Option Activity Share-Based Payment Arrangement, Option and Stock Appreciation Rights, Activity [Table Text Block] Purchase price of loans at acquisition Financing Receivable, Purchased with Credit Deterioration, Amount at Purchase Price Other Income and Expenses [Abstract] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Tier 1 (Core) Capital to risk-weighted assets Banking Regulation, Tier 1 Risk-Based Capital [Abstract] Defined Benefit Plans and 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exempt income Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Preferred stock dividends Preferred Stock Dividends, Income Statement Impact Loss contingencies Commitments and Contingencies, Policy [Policy Text Block] Other adjustments Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Other non-interest Other Non-Interest Income [Member] Other Non-Interest Income Other non-interest income Noninterest Income, Other Operating Income Beginning nonvested (in shares) Ending nonvested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Amortized Cost, With No Related Allowance Financing Receivable, Individually Evaluated, without Allowance for Credit Loss Net cash flows provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Securities, held-to-maturity, at amortized cost Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Debt Securities, Held To Maturity, At Amortized Cost Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Debt Securities, Held To Maturity, At Amortized Cost Debt instrument, term (in years) Debt Instrument, Term Financial instrument contractual amount Fair Value Disclosure, off-Balance-Sheet Risks, Face Amount, Liability Equity Method Investments and Joint Ventures [Abstract] Proceeds from sales of securities available-for-sale, net Proceeds from sales Proceeds from Sale of Debt Securities, Available-for-Sale Securities available-for-sale, at fair value Fair Value Total Debt Securities, Available-for-Sale, Excluding Accrued Interest Proceeds from sales of OREO properties Proceeds from Sale of Other Real Estate Useful life Property, Plant and Equipment, Useful Life Preferred stock, par value per share (in dollars per share) Preferred Stock, Par or Stated Value Per Share Net interest income Interest Income (Expense), Operating Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Actual Amount Banking Regulation, Tier 1 Risk-Based Capital, Actual Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] 2029 Finance Lease, Liability, to be Paid, Year Four Derivative liability, fair value Derivative Liability, Subject to Master Netting Arrangement, before Offset Fair value of liabilities assumed in merger Liabilities Assumed Equity Components [Axis] Equity Components [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Year four Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Reclassification adjustment for loss (gain) on securities, tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Number of reportable segment Number of Reportable Segments Amortization of debt discount (premium) Debt Instrument, Unamortized Discount (Premium), Net Deferred tax assets: Components of Deferred Tax Assets [Abstract] (Purchase) sale of treasury stock, net Stock Issued During Period, Value, Treasury Stock Reissued Entity Address, State or Province Entity Address, State or Province Total Income Interest and Dividend Income, Operating Substandard Substandard [Member] Repayment of finance lease liabilities Financing cash flows from finance leases Finance Lease, Principal Payments Special Mention Special Mention [Member] Financial Asset, Aging [Domain] Financial Asset, Aging [Domain] 2029 Defined Benefit Plan, Expected Future Benefit Payment, Year Four Loans, net Loans Receivable, Fair Value Disclosure Individual: Individual [Axis] Plan cost Defined Contribution Plan, Cost Operating Leases Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Abstract] Unconsolidated Subsidiary Trusts Unconsolidated Subsidiary Trusts [Member] Unconsolidated Subsidiary Trusts Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Right-of-use assets obtained in exchange for new finance lease liabilities Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Document Annual Report Document Annual Report Premises and equipment, net Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment Estimated Fair Value Adjustments Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract] Defined benefit plan, vesting period Defined Benefit Plan, Vesting Period Defined Benefit Plan, Vesting Period Cash and cash equivalents Defined Benefit Plan, Cash and Cash Equivalents [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Entity Interactive Data Current Entity Interactive Data Current West Virginia WEST VIRGINIA Investment Program Proportional Amortization Method Elected Income Tax Credit And Other Income Tax Benefit Before Amortization Statement Of Cash Flows Extensible Enumeration Not Disclosed Flag Investment Program Proportional Amortization Method Elected Income Tax Credit And Other Income Tax Benefit Before Amortization Statement Of Cash Flows Extensible Enumeration Not Disclosed Flag Investment Program Proportional Amortization Method Elected Income Tax Credit And Other Income Tax Benefit Before Amortization Statement Of Cash Flows Extensible Enumeration Not Disclosed Flag Year to date gross charge-offs Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] Condensed Income Statement [Table] Condensed Income Statement [Table] Funded status recognized as accrued pension cost Defined Benefit Plan, Funded (Unfunded) Status of Plan Realized (gain) on sales of OREO property Gains (Losses) on Sales of Other Real Estate Interest income Income Interest and Dividend Income, Operating [Abstract] Subordinated Debentures, Issued in Third Quarter of 2020 Subordinated Debentures, Issued In Third Quarter Of 2020 [Member] Subordinated Debentures, Issued In Third Quarter Of 2020 Nondeductible compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Total non-interest expense Noninterest Expense Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Transfers of financial assets Transfers and Servicing of Financial Assets, Policy [Policy Text Block] Recognized amounts of identifiable assets acquired and liabilities assumed Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) [Abstract] Allowance for Credit Losses Allowance for Credit Losses [Text Block] Deposits Interest Expense, Deposits Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] 2019 Stock Incentive Plan 2019 Stock Incentive Plan [Member] 2019 Stock Incentive Plan Non-interest income Noninterest Income [Abstract] Ownership [Domain] Ownership [Domain] 2027 Finance Lease, Liability, to be Paid, Year Two Schedule of Lessor, Operating Lease, Payment to be Received, Maturity Lessor, Operating Lease, Payment to be Received, Maturity [Table Text Block] Effect of changes in composition of related parties Financing Receivable, Excluding Accrued Interest, Before Allowance for Credit Loss, Increase (Decrease) Financing Receivable, Excluding Accrued Interest, Before Allowance for Credit Loss, Increase (Decrease) 2027 Defined Benefit Plan, Expected Future Benefit Payment, Year Two Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of Maturities of Long-Term Debt Schedule of Maturities of Long-Term Debt [Table Text Block] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Supplemental Disclosures of Cash Flow Information Supplemental Cash Flow Elements [Abstract] Schedule of Financing Receivable Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Other comprehensive income, net of tax: Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Investments in qualified affordable housing projects, unfunded commitments Investment Program, Proportional Amortization Method, Elected, Commitment Minimum Required for Capital Adequacy Purposes (includes applicable capital conservation buffer) Amount Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum Defined Benefit Plan [Table] Defined Benefit Plan [Table] Non-interest-bearing deposits Noninterest-Bearing Deposit Liabilities Schedule of Other Operating Cost and Expense, by Component Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Other fees Fiduciary And Trust, Other Fees [Member] Fiduciary And Trust, Other Fees Dividends from bank subsidiary Dividend Income, Operating Unrecognized compensation costs Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Distributions Defined Benefit Plan, Benefit Obligation, Benefits Paid Federal statutory income tax Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Equity and other investments Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Equity And Other Investments Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Equity And Other Investments Net increase (decrease) in interest-bearing accounts Net Change Interest-Bearing Deposits, Domestic Interest paid on short-term borrowings Interest Paid, Short-Term Borrowings Interest Paid, Short-Term Borrowings Income tax expense form foreign jurisdictions Foreign Income Tax Expense (Benefit), Continuing Operations Two Thousand Twenty One Deferred Compensation Plan Two Thousand Twenty One Deferred Compensation Plan [Member] Two Thousand Twenty One Deferred Compensation Plan 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Three Statement of Financial Position Location, Balance [Axis] Statement of Financial Position Location, Balance [Axis] Bank Time Deposits Bank Time Deposits [Member] Beginning of period Finite-Lived Intangible Assets, Gross Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One 2019 and 2023 Stock Incentive Plan 2019 And 2023 Stock Incentive Plan [Member] 2019 And 2023 Stock Incentive Plan Loans held-for-sale Financing Receivable, Held-for-Sale [Policy Text Block] Repayment of subordinated debt Repayments of Subordinated Debt Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Forfeited Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option, Aggregate Intrinsic Value, Forfeited Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option, Aggregate Intrinsic Value, Forfeited Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Business Combination, Asset Acquisition, Transaction between Entities under Common 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Tax Proceeds from principal payments Proceeds From Principal Payments Of Available-For-Sale Debt Securities Proceeds From Principal Payments Of Available-For-Sale Debt Securities Increase in accrued interest payable and other liabilities Increase (Decrease) In Interest Payable And Other Liabilities Increase (Decrease) In Interest Payable And Other Liabilities Year five Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year Pensions and other employee benefits Employee Benefits and Share-Based Compensation Salaries and employee benefits Labor and Related Expense Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Options effect of dilutive shares (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Expected common stock volatility (as a percent) Share-Based Compensation Arrangement by Share-Based 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