Annual report pursuant to Section 13 and 15(d)

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

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Income Taxes (Statutory Tax Rate Impact on Income Tax Expense) (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Abstract]      
Federal statutory income tax rate 35.00% 35.00% 35.00%
“Expected” statutory tax (expense) benefit $ 23,152,000 $ (374,000) $ 9,699,000
Tax reform rate change 41,626,000 0 0
Nondeductible unrealized loss on derivative instrument with related party (17,021,000) 1,092,000 (3,906,000)
Employee's excess tax benefit for stock based compensation 3,397,000 0 0
Nondeductible officer compensation (3,074,000) (1,424,000) (1,906,000)
Nondeductible transaction costs (2,760,000) 0 0
Nondeductible entertainment expenses (1,141,000) (1,029,000) (1,059,000)
Nondeductible original issue discount (850,000) (773,000) (660,000)
Nondeductible lobbying expenses (345,000) (1,192,000) (442,000)
State income taxes, net of federal (expense) benefit (105,000) (753,000) 487,000
Impact of non-controlling interest attributable to non-tax paying entity 0 0 220,000
Other, net (1,453,000) (752,000) (586,000)
Income tax (expense) benefit $ 41,426,000 $ (5,205,000) $ 1,847,000