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Income Taxes - Reconciliation of Effective Tax Expense (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Expected federal tax on income | $ 49,654 | $ 4,103 | $ 31,041
Add (deduct) tax effects of: |  |  |
Tax-exempt interest | (4,159) | (3,726) | (5,335)
Dividend received deduction | (1,392) | (412) | (4,810)
Goodwill impairment | 5,885 | 0 | 0
Tax Act DTL re-measurement | 0 | 0 | (98,988)
Employee share-based compensation | 272 | (1,134) | (3,258)
Compensation deduction limitation | 680 | 1,754 | 326
Prior year adjustments | (716) | 300 | (293)
Other, net | 1,782 | 309 | 545
Total income tax expense (benefit) | $ 52,006 | $ 1,194 | $ (80,772)

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- Definition Effective Tax Rate Reconciliation, Nondeductible Expense, Compensation Deduction Limitation, Amount + References No definition available. + Details
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- Definition Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Liability, Provisional Income Tax (Expense) Benefit + References No definition available. + 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/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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