Annual report pursuant to Section 13 and 15(d)

Income Taxes (Statutory Tax Rate Impact on Income Tax Expense) (Details)

v3.10.0.1
Income Taxes (Statutory Tax Rate Impact on Income Tax Expense) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]      
Computed expected tax benefit (expense) $ 221,962 $ (206,862) $ (460,885)
State and local income taxes, net of federal income taxes 74,105 (17,001) (38,991)
Dividends received deductions 0 0 1,969
Executive compensation (7,114) 0 0
Change in valuation allowance affecting tax expense (189) (384) 0
Change in state tax rate due to acquisition (117,496) 0 0
Change in state tax rate due to law change 37,073 0 0
Change in tax rate due to Tax Act 0 347,979 0
Deductible stock compensation (131) 14,116 1,700
Goodwill impairment (28,513) 0 0
Other, net 3,610 (4,326) (38)
Income tax benefit (expense) $ 183,307 $ 133,522 $ (496,245)