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Comprehensive Income (Loss) - Schedule of Reclassification out of AOCI (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Net realized and unrealized investment gains (losses) | $ 5,389 | $ (6,880) | $ 5,051 | $ (8,962)
Total federal income tax expense (benefit) | (24,209) | (23,309) | (27,478) | (61,043)
Loss and loss expense incurred | 765,658 | 645,897 | 2,395,498 | 1,859,465
Other insurance expenses | 114,689 | 108,504 | 338,449 | 325,949
Income (loss), before federal income tax | 116,487 | 112,517 | 138,955 | 301,433
Net income (loss) | 92,278 | 89,208 | 111,477 | 240,390
Reclassification out of AOCI |  |  |  |
Net income (loss) | (1,954) | 6,203 | 2,614 | 11,424
Reclassification out of AOCI | Defined benefit pension plan |  |  |  |
Total federal income tax expense (benefit) | (203) | (158) | (609) | (476)
Loss and loss expense incurred | 222 | 173 | 667 | 521
Other insurance expenses | 745 | 583 | 2,234 | 1,749
Income (loss), before federal income tax | 967 | 756 | 2,901 | 2,270
Net income (loss) | 764 | 598 | 2,292 | 1,794
Reclassification out of AOCI | Net realized (gains) losses on disposals and intent-to-sell AFS securities |  |  |  |
Net realized and unrealized investment gains (losses) | (1,249) | 4,628 | (1,284) | 20,115
Total federal income tax expense (benefit) | 263 | (972) | 270 | (4,224)
Net income (loss) | (986) | 3,656 | (1,014) | 15,891
Reclassification out of AOCI | Credit loss related |  |  |  |
Net realized and unrealized investment gains (losses) | (2,191) | 2,468 | 1,692 | (7,925)
Total federal income tax expense (benefit) | 459 | (519) | (356) | 1,664
Net income (loss) | $ (1,732) | $ 1,949 | $ 1,336 | $ (6,261)

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