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AFS: Debt Securities, Available-for-Sale, Amortized Cost [Abstract] Current Financial Asset, Not Past Due [Member] Available-for-sale, allowance for credit loss Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Total Liabilities Liabilities Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Other commitments Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Savings accounts Deposits, Savings Deposits Carrying value of foreclosed assets prior to remeasurement Other Real Estate, Foreclosed Assets, and Repossessed Assets Consolidation Items [Axis] Consolidation Items [Axis] Maturities, principal repayments, and calls Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Securities held-to-maturity, at amortized cost (fair value of $104,371 and $108,990, respectively) Securities available-for-sale, at amortized cost Amortized Cost Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Accounting Standards Update 2016-13 [Member] UNITED STATES