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Comprehensive Income (Reclassification out of AOCI) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Total net realized and unrealized (losses) gains | $ (1,652) | $ 1,734 | $ (12,201) | $ 689
Net investment income | 45,553 | 41,430 | 88,784 | 78,849
Loss and loss expense incurred | 366,328 | 341,559 | 751,269 | 659,031
Other insurance expenses | 80,994 | 82,874 | 164,234 | 164,925
Income before federal income tax | 72,525 | 58,929 | 92,456 | 126,503
Total federal income tax expense | (13,706) | (17,503) | (14,712) | (34,637)
Net income | 58,819 | 41,426 | 77,744 | 91,866
Reclassification out of AOCI |  |  |  |
Net income | 2,681 | (923) | 6,685 | 356
Pension Plan [Member] | Reclassification out of AOCI |  |  |  |
Loss and loss expense incurred | 113 | 111 | 225 | 221
Other insurance expenses | 418 | 397 | 838 | 794
Income before federal income tax | 531 | 508 | 1,063 | 1,015
Total federal income tax expense | (111) | (178) | (223) | (355)
Net income | 420 | 330 | 840 | 660
Held-to-maturity Securities [Member] | Reclassification out of AOCI |  |  |  |
Total net realized and unrealized (losses) gains | (7) | 17 | (6) | 30
Net investment income | (1) | (60) | (14) | (122)
Income before federal income tax | (8) | (43) | (20) | (92)
Total federal income tax expense | 2 | 15 | 4 | 32
Net income | (6) | (28) | (16) | (60)
Available-for-sale Securities [Member] | Reclassification out of AOCI |  |  |  |
Total net realized and unrealized (losses) gains | 2,870 | (1,885) | 7,419 | (375)
Income before federal income tax | 2,870 | (1,885) | 7,419 | (375)
Total federal income tax expense | (603) | 660 | (1,558) | 131
Net income | $ 2,267 | $ (1,225) | $ 5,861 | $ (244)

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- Definition This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and losses recognized for other than temporary impairments (OTTI) of the subject investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (c)-(e) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(c),9(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27405-111563 + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(2)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column G)) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915 + Details
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