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Federal Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Income Tax Disclosure [Abstract] |  |  |  |
Federal statutory tax rate | 21.00% | 21.00% | 21.00% | 21.00%
Income taxes at statutory rate | $ 1,124 | $ 1,496 | $ 3,634 | $ 4,025
Interest income on tax exempt municipal securities | (131) | (147) | (415) | (425)
Earnings on corporate owned life insurance policies | (48) | (47) | (143) | (150)
Other | (6) | (4) | (18) | (12)
Total effect of nontaxable income | (185) | (198) | (576) | (587)
Effect of nondeductible expenses | 14 | 9 | 33 | 26
Effective Income Tax Rate Reconciliation, Tax Credit, Amount | 69 | 74 | 205 | 215
Unrecognized Tax Benefits, Period Increase (Decrease) | 53 | 0 | 53 | 0
Federal income tax expense | $ 937 | $ 1,233 | $ 2,939 | $ 3,249

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