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Income Taxes (Reconciliation Of Income Taxes) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |
Computed tax expense (benefit) at 21% for 2019 and 2018 and 35% for 2017 | $ 79,394 | $ (6,429) | $ 58,480
Tax-exempt interest income | (12,909) | (13,507) | (26,038)
Dividends received deduction | (1,276) | (1,082) | (2,296)
State tax (benefit) expense | (869) | 439 | 158
Nondeductible expenses | 526 | 390 | 348
Change in federal tax contingency reserve | (2,588) | 0 | 0
Cumulative impact from change in federal tax rate | 0 | 0 | (11,449)
(Reversal in 2018) reduction of AMT credit carryforward due to sequestration in 2017 | 0 | (4,088) | 4,088
Other, net | (4,296) | (610) | (1,083)
Income tax expense (benefit) | $ 57,982 | $ (24,887) | $ 22,208

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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324 + Details
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