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Other Comprehensive Income (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax | $ (1,692) | $ 6,680 | $ 5,792 | $ 34,421
Accumulated Other Comprehensive Income (Loss), Debt Securities, Available-for-sale, Adjustment, after Tax | (67,883) | (95,714) | 21,153 | 40,690
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax | 0 | 0 | (206) | (698)
Accumulated Other Comprehensive Income (Loss), Net of Tax | (66,191) | (102,394) | 15,155 | $ 5,571
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax | (8,334) | 876 | (26,875) |
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments, after Tax | 21,610 | (116,867) | (19,537) |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax | 0 | 154 | 492 |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | 29,944 | (117,589) | 7,830 |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax | 38 | (12) | 1,754 |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax | (6,221) | 0 | 0 |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax | 0 | 52 | 0 |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | (6,259) | (40) | (1,754) |
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax | (8,372) | 888 | (28,629) |
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax | 27,831 | (116,867) | (19,537) |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax | 0 | 206 | 492 |
Other Comprehensive Income (Loss), Net of Tax | 36,203 | (117,549) | 9,584 |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax | 0 | 0 | 2,235 |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax | 10 | (3) | 466 |
Gain (Loss) on Sale of Investments | (7,875) | 0 | 0 |
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax | 7,875 | 0 | 0 |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax | 1,654 | 0 | 0 |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax | 10,549 | (1,109) | 34,019 |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax | 48 | (15) | (15) |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax | 48 | (15) | 2,220 |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax | $ 0 | $ 14 | $ 0 |
OCI, Cash Flow Hedge, Reclassification for Discontinuance, Statement of Income or Comprehensive Income [Extensible Enumeration] | Miscellaneous | Miscellaneous | Miscellaneous |
Available-for-sale Securities [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax | $ 7,875 | $ 0 | $ 0 |
Available-for-sale Securities [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | $ 6,221 | $ 0 | $ 0 |

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