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Nature of Banking Activities and Significant Accounting Policies (Narrative) (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Sep. 18, 2024 | Jan. 01, 2024 | May 16, 2023
Property Plant And Equipment [Line Items] |  |  |  |  |
Ownership percentage in subsidiaries | 10000.00% |  |  |  |
Accrued interest receivable | $ 4,800,000 | $ 4,600,000 |  |  |
Sale of non mortgage loans | $ 14,300,000 |  |  |  |
Limit of the estimated appraised value of the furnished home | 80.00% |  |  |  |
Reserve credit losses for unfunded commitments | $ 505,000 | 479,000 |  |  |
The Company's reserve for unfunded loan commitments |  | 406,000 |  |  |
Provision for credit losses | $ 2,551,000 | $ 1,649,000 |  |  |
Stock incentive plan, authorized common stock |  |  |  |  | 250,000
"More likely than not" threshold | 50.00% |  |  |  |
Antidilutive securities excluded from computation of earnings per share, amount | 0 | 0 |  |  |
Number of shares of common stock able to be repurchased |  |  | 150,000 |  |
Repurchase and retirement of common stock | 7,868 | 8,531 |  |  |
Stock repurchased and retired during period, value | $ 30.08 | $ 35.34 |  |  |
Maximum numbers of shares that may yet be purchased under plan | 148,122 |  |  |  |
Investment balance |  |  |  | $ 477,000 |
Unfunded Commitments [Member] |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |
Reserve credit losses for unfunded commitments | $ 505,000 | 479,000 |  |  |
The Company's reserve for unfunded loan commitments |  | 406,000 |  |  |
Provision for credit losses | $ 26,000 | $ 8,000 |  |  |
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 |  |  |  |

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