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Comprehensive Income (Reclassification out of AOCI) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Net realized and unrealized gains (losses) | $ 4,027 | $ (1,652) | $ 17,478 | $ (12,201)
Net investment income | (58,505) | (45,553) | (109,123) | (88,784)
Loss and loss expense incurred | 380,984 | 366,328 | 767,563 | 751,269
Other insurance expenses | 86,662 | 80,994 | 171,741 | 164,234
Income before federal income tax | 90,225 | 72,525 | 163,919 | 92,456
Total federal income tax expense | (17,959) | (13,706) | (30,305) | (14,712)
Net income | 72,266 | 58,819 | 133,614 | 77,744
Reclassification out of AOCI |  |  |  |
Net income | (520) | 2,681 | (853) | 6,685
Pension Plan [Member] | Reclassification out of AOCI |  |  |  |
Loss and loss expense incurred | 145 | 113 | 290 | 225
Other insurance expenses | 519 | 418 | 1,038 | 838
Income before federal income tax | 664 | 531 | 1,328 | 1,063
Total federal income tax expense | (140) | (111) | (279) | (223)
Net income | 524 | 420 | 1,049 | 840
Held-to-maturity Securities [Member] | Reclassification out of AOCI |  |  |  |
Net realized and unrealized gains (losses) | (9) | (7) | (9) | (6)
Net investment income | (12) | (1) | (21) | (14)
Income before federal income tax | (21) | (8) | (30) | (20)
Total federal income tax expense | 4 | 2 | 6 | 4
Net income | (17) | (6) | (24) | (16)
Available-for-sale Securities [Member] | Reclassification out of AOCI |  |  |  |
Net realized and unrealized gains (losses) | (1,300) | 2,870 | (2,377) | 7,419
Income before federal income tax | (1,300) | 2,870 | (2,377) | 7,419
Total federal income tax expense | 273 | (603) | 499 | (1,558)
Net income | $ (1,027) | $ 2,267 | $ (1,878) | $ 5,861

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