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Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2024
Equity [Abstract] |
Schedule of Components of Other Comprehensive Income and Related Tax Effects | Other comprehensive income components and related tax effects were as follows for the years ended December 31, 2024, 2023, and 2022:
| December 31, 2024 |  | December 31, 2023 |  | December 31, 2022
Unrealized holding gains (losses) on available-for-sale securities | $ | 2,245 |  |  | $ | 7,785 |  |  | $ | (67,167) |
Less reclassification adjustment for gains recognized in earnings | (74) |  |  | (52) |  |  | (651) |
Net unrealized gains (losses) | 2,171 |  |  | 7,733 |  |  | (67,818) |
Tax effect | (456) |  |  | (1,624) |  |  | 14,242 |
Net-of-tax amount | 1,715 |  |  | 6,109 |  |  | (53,576) |
Amortization of unrealized gains from held-to-maturity securities | 690 |  |  | 748 |  |  | 1,107 |
Tax effect | (145) |  |  | (157) |  |  | (232) |
Net-of-tax amount | 545 |  |  | 591 |  |  | 875 |
Actuarial gains (losses) on postemployment health care plan | 478 |  |  | (2) |  |  | 303 |
Net amortization of transition obligation and actuarial gain | (168) |  |  | (174) |  |  | (113) |
Net unrealized gains (losses) on postemployment health care plan | 310 |  |  | (176) |  |  | 190 |
Tax effect | (65) |  |  | 37 |  |  | (40) |
Net-of-tax amount | 245 |  |  | (139) |  |  | 150 |
Unrealized gains on interest rate swap | — |  |  | — |  |  | 411 |
Less reclassification adjustment for gains (losses) recognized in earnings | — |  |  | (151) |  |  | 127 |
Net unrealized gains (losses) | — |  |  | (151) |  |  | 538 |
Tax effect | — |  |  | 32 |  |  | (113) |
Net-of-tax amount | — |  |  | (119) |  |  | 425 |
Other comprehensive income (loss) | $ | 2,505 |  |  | $ | 6,442 |  |  | $ | (52,126) |
Schedule of Change in Accumulated Other Comprehensive Income (Loss) | The following is a summary of the change in the accumulated other comprehensive income (loss) balance, net of tax, for the years ended December 31, 2024, 2023, and 2022.
| Balance December 31, 2023 |  | Comprehensive Income (Loss) |  |  |  | Balance December 31, 2024
Unrealized gains on securities available-for-sale | $ | (48,173) |  |  | $ | 1,715 |  |  |  |  | $ | (46,458) |
Amortization of unrealized gains from held-to-maturity securities | 1,466 |  |  | 545 |  |  |  |  | 2,011 |
Unrealized gains on postretirement benefits plan | 629 |  |  | 245 |  |  |  |  | 874 |
Total | $ | (46,078) |  |  | $ | 2,505 |  |  |  |  | $ | (43,573) |
| Balance December 31, 2022 |  | Comprehensive Income (Loss) |  |  |  | Balance December 31, 2023
Unrealized gains on securities available-for-sale | $ | (54,282) |  |  | $ | 6,109 |  |  |  |  | $ | (48,173) |
Amortization of unrealized gains from held-to-maturity securities | 875 |  |  | 591 |  |  |  |  | 1,466 |
Unrealized losses on postretirement benefits plan | 768 |  |  | (139) |  |  |  |  | 629 |
Unrealized losses on interest rate swap | 119 |  |  | (119) |  |  |  |  | — |
Total | $ | (52,520) |  |  | $ | 6,442 |  |  |  |  | $ | (46,078) |
| Balance January 1, 2022 |  | Comprehensive Income (Loss) |  |  |  | Balance December 31, 2022
Unrealized losses on securities available-for-sale | $ | (706) |  |  | $ | (53,576) |  |  |  |  | $ | (54,282) |
Amortization of unrealized gains from held-to-maturity securities | — |  |  | 875 |  |  |  |  | 875 |
Unrealized gains on postretirement benefits plan | 618 |  |  | 150 |  |  |  |  | 768 |
Unrealized gains on interest rate swap | (306) |  |  | 425 |  |  |  |  | 119 |
Total | $ | (394) |  |  | $ | (52,126) |  |  |  |  | $ | (52,520) |

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