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Other Comprehensive Income (Loss) - Schedule of Reclassifications (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Before-Tax Amount |  |  |  |
Net unrealized gains/losses | $ 45,655 | $ 25,815 | $ 31,529 | $ 43,258
Tax (Expense) Benefit |  |  |  |
Net unrealized gains/losses and Other comprehensive (loss) income | (11,185) | (6,324) | (7,724) | (10,598)
Net of Tax |  |  |  |
Change in net unrealized (loss) gain during the period | 34,300 | (28,273) | 23,221 | (20,932)
Reclassification adjustment for net realized loss on sale of available-for-sale debt securities included in net income (loss) | 170 | 47,764 | 584 | 53,592
Other comprehensive income | 34,470 | 19,491 | 23,805 | 32,660
Net unrealized gains/losses |  |  |  |
Before-Tax Amount |  |  |  |
Change in net unrealized (loss) gain during the period | 45,431 | (37,449) | 30,756 | (27,725)
Reclassification adjustment for net realized loss on sale of available-for-sale debt securities included in net income (loss) | (50) | 62,932 | (50) | 69,984
Net unrealized gains/losses | 45,381 | 25,483 | 30,706 | 42,259
Tax (Expense) Benefit |  |  |  |
Change in net unrealized (loss) gain during the period | (11,131) | 9,176 | (7,535) | 6,793
Reclassification adjustment for net realized loss on sale of available-for-sale debt securities included in net income (loss) | 12 | (15,419) | 12 | (17,146)
Net unrealized gains/losses and Other comprehensive (loss) income | (11,119) | (6,243) | (7,523) | (10,353)
Net of Tax |  |  |  |
Change in net unrealized (loss) gain during the period | 34,300 | (28,273) | 23,221 | (20,932)
Reclassification adjustment for net realized loss on sale of available-for-sale debt securities included in net income (loss) | (38) | 47,513 | (38) | 52,838
Other comprehensive income | 34,262 | 19,240 | 23,183 | 31,906
Amortization of net retirement plan actuarial gain (loss) |  |  |  |
Before-Tax Amount |  |  |  |
Reclassification adjustment for net realized loss on sale of available-for-sale debt securities included in net income (loss) | 229 | 279 | 686 | 837
Tax (Expense) Benefit |  |  |  |
Reclassification adjustment for net realized loss on sale of available-for-sale debt securities included in net income (loss) | (56) | (68) | (168) | (205)
Net of Tax |  |  |  |
Reclassification adjustment for net realized loss on sale of available-for-sale debt securities included in net income (loss) | 173 | 211 | 518 | 632
Amortization of net retirement plan prior service cost |  |  |  |
Before-Tax Amount |  |  |  |
Reclassification adjustment for net realized loss on sale of available-for-sale debt securities included in net income (loss) | 45 | 53 | 137 | 162
Tax (Expense) Benefit |  |  |  |
Reclassification adjustment for net realized loss on sale of available-for-sale debt securities included in net income (loss) | (10) | (13) | (33) | (40)
Net of Tax |  |  |  |
Reclassification adjustment for net realized loss on sale of available-for-sale debt securities included in net income (loss) | 35 | 40 | 104 | 122
Employee benefit plans |  |  |  |
Before-Tax Amount |  |  |  |
Net unrealized gains/losses | 274 | 332 | 823 | 999
Tax (Expense) Benefit |  |  |  |
Net unrealized gains/losses and Other comprehensive (loss) income | (66) | (81) | (201) | (245)
Net of Tax |  |  |  |
Other comprehensive income | $ 208 | $ 251 | $ 622 | $ 754

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