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Comprehensive Income - Reclassification out of AOCI (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Net realized and unrealized investment gains (losses) | $ (1,635) | $ 3,344
Total federal income tax expense | (20,048) | (22,185)
Loss and loss expense incurred | 704,292 | 567,438
Other insurance expenses | 115,987 | 108,588
Income, before federal income tax | 102,566 | 114,759
Net income | 82,518 | 92,574
Reclassification out of AOCI |  |
Net income | 2,796 | (2,107)
Reclassification out of AOCI | Defined benefit pension and post-retirement life plans |  |
Total federal income tax expense | (203) | (159)
Loss and loss expense incurred | 222 | 175
Other insurance expenses | 745 | 582
Income, before federal income tax | 967 | 757
Net income | 764 | 598
Reclassification out of AOCI | Net realized (gains) losses on disposals and intent-to-sell AFS securities |  |
Net realized and unrealized investment gains (losses) | (78) | 6,104
Total federal income tax expense | 17 | (1,282)
Net income | (61) | 4,822
Reclassification out of AOCI | Credit loss related |  |
Net realized and unrealized investment gains (losses) | 2,650 | (9,529)
Total federal income tax expense | (557) | 2,002
Net income | $ 2,093 | $ (7,527)

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