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v3.23.1

Nature of Banking Activities and Significant Accounting Policies (Narrative) (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 USD ($) Loan shares | Dec. 31, 2021 USD ($) Loan shares | Jan. 01, 2023 USD ($) | Jul. 11, 2022 shares
Property Plant And Equipment [Line Items] |  |  |  |
Ownership percentage in subsidiaries | 100.00% |  |  |
Sale of Non Mortgage Loans | $ | $ 156,000,000 |  |  |
Period interest on mortgage loans is discontinued | 120 days |  |  |
Period Interest on commercial loans discontinued | 90 days |  |  |
Credit card loans and other personal loans are charged off | 180 days |  |  |
Limit of the estimated appraised value of the furnished home | 80.00% |  |  |
Authorized issuance of shares of common stock | shares | 500,000 |  |  |
"More likely than not" threshold | 50.00% |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares | 0 | 0 |  |
Number of shares of common stock able to be repurchased | shares |  |  |  | 150,000
Treasury Stock, Shares, Retired | shares | 4,442 | 4,749 |  |
Stock Repurchased and Retired During Period, Value | $ | $ 34.79 | $ 31.26 |  |
Maximum numbers of shares that may yet be purchased under plan | shares | 148,969 |  |  |
Minimum [Member] |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |
Adjustment to retained earnings, net of deferred income taxes, and adjustments to the allowance for credit losses on loans | $ |  |  | $ 1,500,000 |
Maximum [Member] |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |
Adjustment to retained earnings, net of deferred income taxes, and adjustments to the allowance for credit losses on loans | $ |  |  | $ 2,500,000 |
Building [Member] | Minimum [Member] |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |
Estimated useful lives | 10 years |  |  |
Building [Member] | Maximum [Member] |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |
Estimated useful lives | 39 years |  |  |
Furniture and equipment [Member] | Minimum [Member] |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |
Estimated useful lives | 3 years |  |  |
Furniture and equipment [Member] | Maximum [Member] |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |
Estimated useful lives | 10 years |  |  |
Paycheck Protection Program Loans [Member] |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |
Number of loans | Loan | 1 | 152 |  |
Total outstanding balance of loans | $ | $ 74,000 | $ 15,900,000 |  |

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