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Comprehensive Income (Reclassification out of AOCI) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Net realized and unrealized investment gains (losses) | $ (5,426) | $ (42,880) | $ (2,082) | $ (83,232)
Net investment income earned | 97,696 | 70,222 | 189,202 | 142,824
Loss and loss expense incurred | 646,130 | 524,868 | 1,213,568 | 1,019,104
Other insurance expenses | 108,857 | 101,514 | 217,445 | 195,504
Income before federal income tax | 74,157 | 49,904 | 188,916 | 119,794
Total federal income tax expense | (15,549) | (10,384) | (37,734) | (23,944)
Net income (loss) | 58,608 | 39,520 | 151,182 | 95,850
Reclassification out of AOCI |  |  |  |
Net income (loss) | 7,328 | 26,945 | 5,221 | 57,329
Pension Plan [Member] | Reclassification out of AOCI |  |  |  |
Loss and loss expense incurred | 173 | 84 | 348 | 180
Other insurance expenses | 584 | 333 | 1,166 | 654
Income before federal income tax | 757 | 417 | 1,514 | 834
Total federal income tax expense | (159) | (87) | (318) | (175)
Net income (loss) | 598 | 330 | 1,196 | 659
Held-to-maturity Securities [Member] | Reclassification out of AOCI |  |  |  |
Net realized and unrealized investment gains (losses) | 0 | 0 | 0 | 0
Net investment income earned | 0 | 0 | 0 | 1
Income before federal income tax | 0 | 0 | 0 | 1
Total federal income tax expense | 0 | 0 | 0 | 0
Net income (loss) | 0 | 0 | 0 | 1
Available for sale securities, excluding credit losses [Member] | Reclassification out of AOCI |  |  |  |
Net realized and unrealized investment gains (losses) | 9,383 | 18,170 | 15,487 | 34,161
Income before federal income tax | 9,383 | 18,170 | 15,487 | 34,161
Total federal income tax expense | (1,970) | (3,816) | (3,252) | (7,174)
Net income (loss) | 7,413 | 14,354 | 12,235 | 26,987
Available for sale securities, including credit losses | Reclassification out of AOCI |  |  |  |
Net realized and unrealized investment gains (losses) | (864) | 15,519 | (10,393) | 37,571
Income before federal income tax | (864) | 15,519 | (10,393) | 37,571
Total federal income tax expense | 181 | (3,258) | 2,183 | (7,889)
Net income (loss) | $ (683) | $ 12,261 | $ (8,210) | $ 29,682

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