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Other Comprehensive Income (Loss) - Components of Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Before Tax |  |  |
Total other comprehensive income (loss) | $ 93,311 | $ 8,241 | $ 32,074
Tax Effect |  |  |
Total other comprehensive income (loss) | (34,139) | (2,481) | (8,144)
After Tax |  |  |
Total other comprehensive income, net of tax | 59,172 | 5,760 | 23,930
Unrealized Gains on Available for Sale Debt Securities |  |  |
Before Tax |  |  |
Net gains (losses) arising during the period | 104,795 | 11,216 | 43,250
Reclassification adjustment for gains and losses included in net income | (87) | 2,986 | 0
Total other comprehensive income (loss) | 104,708 | 14,202 | 43,250
Tax Effect |  |  |
Net gains (losses) arising during the period | (37,349) | (3,375) | (11,125)
Reclassification adjustment for gains and losses included in net income | 24 | (899) | 0
Total other comprehensive income (loss) | (37,325) | (4,274) | (11,125)
After Tax |  |  |
Net gains (losses) arising during the period | 67,446 | 7,841 | 32,125
Reclassification adjustment for gains and losses included in net income | (63) | 2,087 | 0
Total other comprehensive income, net of tax | 67,383 | 9,928 | 32,125
Unrealized (Losses) on Derivatives (cash flow hedges) |  |  |
Before Tax |  |  |
Net gains (losses) arising during the period | 167 | 4,547 | 3,288
Reclassification adjustment for gains and losses included in net income | (6,993) | (13,670) | (17,713)
Total other comprehensive income (loss) | (6,826) | (9,123) | (14,425)
Tax Effect |  |  |
Net gains (losses) arising during the period | (47) | (1,368) | (900)
Reclassification adjustment for gains and losses included in net income | 1,955 | 4,113 | 4,765
Total other comprehensive income (loss) | 1,908 | 2,745 | 3,865
After Tax |  |  |
Net gains (losses) arising during the period | 120 | 3,179 | 2,388
Reclassification adjustment for gains and losses included in net income | (5,038) | (9,557) | (12,948)
Total other comprehensive income, net of tax | (4,918) | (6,378) | (10,560)
Post-Retirement Obligations |  |  |
Before Tax |  |  |
Reclassification adjustment for gains and losses included in net income | (4,571) | 3,162 | 3,249
Tax Effect |  |  |
Reclassification adjustment for gains and losses included in net income | 1,278 | (952) | (884)
After Tax |  |  |
Reclassification adjustment for gains and losses included in net income | (3,293) | 2,210 | $ 2,365
Total other comprehensive income, net of tax | $ (3,293) | $ 2,210 |

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