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HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateNetCarryingAmount Document Period End Date Document Period End Date Information about Interest Rate Swap Agreements Schedule of Interest Rate Derivatives [Table Text Block] Readily marketable securities Estimated fair value Readily Marketable Securities At Estimated Fair Value Readily Marketable Securities At Estimated Fair Value Common stock issuable, 11,642 shares at December 31, 2024; 12,217 shares at December 31, 2023 Common Stock Issuable Common Stock Issuable Leverage - Tier 1 capital to average total assets, as defined Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum Total lease payments Lessee, Operating Lease, Liability, to be Paid Data Relating to Funding Position of Defined Benefit Plans Schedule of Net Funded Status [Table Text Block] Trading account Trading Account Trading Account Amortized Cost with Allowance Financing Receivable, Excluding Accrued Interest, Nonaccrual, With Allowance Financing Receivable, Excluding Accrued Interest, Nonaccrual, With Allowance Beginning balance (in shares) Ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Non-PCD Financial Asset Acquired and No Credit Deterioration [Member] Expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Insider Trading Arrangements [Line Items] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Three Net accrued asset (liability) recognized in the Consolidated Balance Sheet PensionAndOtherPostretirementDefinedBenefitPlansAssetsLiabilitiesNet PensionAndOtherPostretirementDefinedBenefitPlansAssetsLiabilitiesNet Interest income Interest Income, Operating Accumulated benefit obligation Defined Benefit Plan, Accumulated Benefit Obligation Debt securities available for sale: Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract] Trading Activity Trading Activity [Axis] Less: Income attributable to unvested stock-based compensation awards Income Attributable To Unvested Stock Based Compensation Awards Diluted Income Attributable To Unvested Stock Based Compensation Awards Diluted Document Transition Report Document Transition Report Impact on fair value of 10% adverse change Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Adverse Change in Prepayment Speed Servicing Assets At Fair Value [Table] Servicing Asset at Fair Value, Activity [Table] Fair value Business Combination, Acquired Receivable, Fair Value Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Entity Current Reporting Status Entity Current Reporting Status Retained Earnings Retained Earnings [Member] Servicing Assets At Amortized Value [Table] Servicing Asset at Amortized Cost [Table] Federal, State and Local Tax Federal State And Local Tax [Member] Federal State And Local Tax Accruing Loans Past Due 90 Days or More Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Net income available to common equity Net income available to common equity NetIncomeLossAvailableToCommonStockholdersBasicBeforeUnvestedStockBasedCompensationAwardsAdjustment NetIncomeLossAvailableToCommonStockholdersBasicBeforeUnvestedStockBasedCompensationAwardsAdjustment Total recognized in other comprehensive income, pre-tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Reclassification Adjustment, before Tax Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Total other expense Other Noninterest Expense Executive Category: Executive Category [Axis] Lease payments receivable Direct Financing Lease, Lease Receivable Components of Income Tax Expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Reclassification from AOCI, current period, net of tax, attributable to parent Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Statement of Income Location, Balance Statement of Income Location, Balance [Domain] Available for sale Payments to Acquire Debt Securities, Available-for-Sale Company Selected Measure Name Company Selected Measure Name