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Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2023
Equity [Abstract] |
Component of Other Comprehensive Income (Loss) | The tax effects allocated to each component of other comprehensive income (loss) were as follows:
| Before Tax Amount |  | Tax Expense, (Benefit) |  | Net of Tax Amount
2023 |  |  |  |  |
Securities available for sale and transferred securities: |  |  |  |  |
Change in net unrealized gain/loss during the period | $ | 277,926 |  |  | $ | 58,364 |  |  | $ | 219,562 |
Change in net unrealized gain on securities transferred to held to maturity | (649) |  |  | (136) |  |  | (513) |
Reclassification adjustment for net (gains) losses included in net income | (66) |  |  | (14) |  |  | (52) |
Total securities available for sale and transferred securities | 277,211 |  |  | 58,214 |  |  | 218,997 |
Defined-benefit post-retirement benefit plans: |  |  |  |  |
Change in the net actuarial gain/loss | 9,278 |  |  | 1,948 |  |  | 7,330 |
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) | 3,479 |  |  | 731 |  |  | 2,748 |
Total defined-benefit post-retirement benefit plans | 12,757 |  |  | 2,679 |  |  | 10,078 |
Total other comprehensive income (loss) | $ | 289,968 |  |  | $ | 60,893 |  |  | $ | 229,075 |
| Before Tax Amount |  | Tax Expense, (Benefit) |  | Net of Tax Amount
2022 |  |  |  |  |
Securities available for sale and transferred securities: |  |  |  |  |
Change in net unrealized gain/loss during the period | $ | (2,143,567) |  |  | $ | (450,149) |  |  | $ | (1,693,418) |
Change in net unrealized gain on securities transferred to held to maturity | (737) |  |  | (155) |  |  | (582) |
Total securities available for sale and transferred securities | (2,144,304) |  |  | (450,304) |  |  | (1,694,000) |
Defined-benefit post-retirement benefit plans: |  |  |  |  |
Change in the net actuarial gain/loss | (5,005) |  |  | (1,051) |  |  | (3,954) |
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) | 2,964 |  |  | 622 |  |  | 2,342 |
Total defined-benefit post-retirement benefit plans | (2,041) |  |  | (429) |  |  | (1,612) |
Total other comprehensive income (loss) | $ | (2,146,345) |  |  | $ | (450,733) |  |  | $ | (1,695,612) |
2021 |  |  |  |  |
Securities available for sale and transferred securities: |  |  |  |  |
Change in net unrealized gain/loss during the period | $ | (231,355) |  |  | $ | (48,585) |  |  | $ | (182,770) |
Change in net unrealized gain on securities transferred to held to maturity | (971) |  |  | (204) |  |  | (767) |
Reclassification adjustment for net (gains) losses included in net income | (69) |  |  | (14) |  |  | (55) |
Total securities available for sale and transferred securities | (232,395) |  |  | (48,803) |  |  | (183,592) |
Defined-benefit post-retirement benefit plans: |  |  |  |  |
Change in the net actuarial gain/loss | 16,593 |  |  | 3,485 |  |  | 13,108 |
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) | 6,116 |  |  | 1,284 |  |  | 4,832 |
Total defined-benefit post-retirement benefit plans | 22,709 |  |  | 4,769 |  |  | 17,940 |
Total other comprehensive income (loss) | $ | (209,686) |  |  | $ | (44,034) |  |  | $ | (165,652) |
Schedule of Accumulated Other Comprehensive Income, Net of Tax | Activity in accumulated other comprehensive income, net of tax, was as follows:
| Securities Available For Sale |  | Defined Benefit Plans |  |  |  | Accumulated Other Comprehensive Income
Balance January 1, 2023 | $ | (1,313,791) |  |  | $ | (34,503) |  |  |  |  | $ | (1,348,294) |
Other comprehensive income (loss) before reclassification | 219,049 |  |  | 7,330 |  |  |  |  | 226,379 |
Reclassification of amounts included in net income | (52) |  |  | 2,748 |  |  |  |  | 2,696 |
Net other comprehensive income (loss) during period | 218,997 |  |  | 10,078 |  |  |  |  | 229,075 |
Balance December 31, 2023 | $ | (1,094,794) |  |  | $ | (24,425) |  |  |  |  | $ | (1,119,219) |
Balance January 1, 2022 | $ | 380,209 |  |  | $ | (32,891) |  |  |  |  | $ | 347,318 |
Other comprehensive income (loss) before reclassification | (1,694,000) |  |  | (3,954) |  |  |  |  | (1,697,954) |
Reclassification of amounts included in net income | — |  |  | 2,342 |  |  |  |  | 2,342 |
Net other comprehensive income (loss) during period | (1,694,000) |  |  | (1,612) |  |  |  |  | (1,695,612) |
Balance December 31, 2022 | $ | (1,313,791) |  |  | $ | (34,503) |  |  |  |  | $ | (1,348,294) |
Balance January 1, 2021 | $ | 563,801 |  |  | $ | (50,831) |  |  |  |  | $ | 512,970 |
Other comprehensive income (loss) before reclassification | (183,537) |  |  | 13,108 |  |  |  |  | (170,429) |
Reclassification of amounts included in net income | (55) |  |  | 4,832 |  |  |  |  | 4,777 |
Net other comprehensive income (loss) during period | (183,592) |  |  | 17,940 |  |  |  |  | (165,652) |
Balance December 31, 2021 | $ | 380,209 |  |  | $ | (32,891) |  |  |  |  | $ | 347,318 |

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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 1 -Section 45 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-1 + Details
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