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Shareholders' Equity (Reclassifications from AOCI to Net Income)(Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Reclassification adjustments related to available-for-sale securities |  |  |  |  |  |  |  |  |  |  |
Tax effect (at 35%) |  |  |  |  |  |  |  |  | $ (12,658) | $ (65,440) | $ (99,636)
Net income | $ 34,948 | $ 10,276 | $ 33,158 | $ 37,814 | $ 65,114 | $ 34,778 | $ 49,942 | $ 46,731 | 116,197 | 196,565 | 297,523
Deferred tax expense (benefit) included in OCI |  |  |  |  |  |  |  |  | (18,370) | (785) | (46,157)
Reclassifications from accumulated other comprehensive income to net income, available for sale securities [Member] |  |  |  |  |  |  |  |  |  |  |
Reclassification adjustments related to available-for-sale securities |  |  |  |  |  |  |  |  |  |  |
Tax effect (at 35%) |  |  |  |  |  |  |  |  | 2,364 | (1,161) | (3,981)
Net income |  |  |  |  |  |  |  |  | (4,390) | 2,156 | 7,394
Reclassifications from accumulated other comprehensive income to net income, available for sale securities [Member] | Realized investment gains (losses) [Member] |  |  |  |  |  |  |  |  |  |  |
Reclassification adjustments related to available-for-sale securities |  |  |  |  |  |  |  |  |  |  |
Reclassifications from AOCI to net income, available-for-sale securities |  |  |  |  |  |  |  |  | (4,475) | 3,317 | 11,722
Reclassifications from accumulated other comprehensive income to net income, available for sale securities [Member] | Non-credit impairment losses reclassified to earnings, due to sale of securities or reclassification as a credit loss [Member] |  |  |  |  |  |  |  |  |  |  |
Reclassification adjustments related to available-for-sale securities |  |  |  |  |  |  |  |  |  |  |
Reclassifications from AOCI to net income, available-for-sale securities |  |  |  |  |  |  |  |  | $ (2,279) | $ 0 | $ (347)

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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=6907707&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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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