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Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2023
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | The tables below summarize the changes in accumulated other comprehensive income (loss) by component for the years ended December 31, 2023 and 2022, net of tax:
December 31, 2023 |  | Unrealized Gains and Losses on Available-for-Sale Securities |  | Postretirement Benefit Items |  | Total
Beginning Balance |  | $ | (262,924) |  |  | $ | (514) |  |  | $ | (263,438) |
Other Comprehensive Income (Loss) Before Reclassification |  | 46,410 |  |  | — |  |  | 46,410 |
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | (32) |  |  | — |  |  | (32) |
Net Current Period Other |  |  |  |  |  |
Comprehensive Income (Loss) |  | 46,378 |  |  | — |  |  | 46,378 |
Ending Balance |  | $ | (216,546) |  |  | $ | (514) |  |  | $ | (217,060) |
December 31, 2022 |  | Unrealized Gains and Losses on Available-for-Sale Securities |  | Postretirement Benefit Items |  | Total
Beginning Balance |  | $ | 16,052 |  |  | $ | (568) |  |  | $ | 15,484 |
Other Comprehensive Income (Loss) Before Reclassification |  | (278,532) |  |  | — |  |  | (278,532) |
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | (444) |  |  | 54 |  |  | (390) |
Net Current Period Other |  |  |  |  |  |
Comprehensive Income (Loss) |  | (278,976) |  |  | 54 |  |  | (278,922) |
Ending Balance |  | $ | (262,924) |  |  | $ | (514) |  |  | $ | (263,438) |
Schedule of Classifications Out of Accumulated Other Comprehensive Income (Loss) by Component | The table below summarizes the classifications out of accumulated other comprehensive income (loss) by component for the year ended December 31, 2023:
Details about Accumulated Other Comprehensive Income (Loss) Components |  | Amount Reclassified From Accumulated Other Comprehensive Income (Loss) |  | Affected Line Item in the Statement Where Net Income is Presented
Unrealized Gains and Losses on |  |  |  |
Available-for-Sale Securities |  | $ | 40 |  |  | Net Gain (Loss) on Securities
|  | (8) |  |  | Income Tax Expense
|  | 32 |  |  | Net of Tax
Amortization of Post Retirement Plan Items |  |  |  |
Actuarial Gains (Losses) |  | $ | — |  |  | Salaries and Employee Benefits
|  | — |  |  | Income Tax Expense
|  | — |  |  | Net of Tax
Total Reclassifications for the Period |  | $ | 32 |  |  |
The table below summarizes the classifications out of accumulated other comprehensive income (loss) by component for the year ended December 31, 2022:
Details about Accumulated Other Comprehensive Income (Loss) Components |  | Amount Reclassified From Accumulated Other Comprehensive Income (Loss) |  | Affected Line Item in the Statement Where Net Income is Presented
Unrealized Gains and Losses on |  |  |  |
Available-for-Sale Securities |  | $ | 562 |  |  | Net Gain (Loss) on Securities
|  | (118) |  |  | Income Tax Expense
|  | 444 |  |  | Net of Tax
Amortization of Post Retirement Plan Items |  |  |  |
Actuarial Gains (Losses) |  | $ | — |  |  | Salaries and Employee Benefits
|  | — |  |  | Income Tax Expense
|  | — |  |  | Net of Tax
Total Reclassifications for the Period |  | $ | 444 |  |  |
The table below summarizes the classifications out of accumulated other comprehensive income (loss) by component for the year ended December 31, 2021:
Details about Accumulated Other Comprehensive Income (Loss) Components |  | Amount Reclassified From Accumulated Other Comprehensive Income (Loss) |  | Affected Line Item in the Statement Where Net Income is Presented
Unrealized Gains and Losses on |  |  |  |
Available-for-Sale Securities |  | $ | 2,247 |  |  | Net Gain (Loss) on Securities
|  | (472) |  |  | Income Tax Expense
|  | 1,775 |  |  | Net of Tax
Amortization of Post Retirement Plan Items |  |  |  |
Actuarial Gains (Losses) |  | $ | — |  |  | Salaries and Employee Benefits
|  | — |  |  | Income Tax Expense
|  | — |  |  | Net of Tax
Total Reclassifications for the Period |  | $ | 1,775 |  |  |

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