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Income Taxes Effective Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Statutory U.S. Federal Income Tax Rate	$ 12,534	$ 230,721	$ 41,503
Net Effect of State Income Taxes	1,333	60,814	15,538
Non-Controlling Interest	(23,662)	(18,181)	0
Uncertain Tax Positions	0	(4,265)	27,359
Effect of Spin on Federal NOL's	0	0	24,942
Accrual to Tax Return Reconciliation	603	3,028	(1,147)
Effect of Equity Compensation	8,771	0	0
Effect of Change in State Valuation Allowance	33,238	(22,684)	(430)
Effect of Change in Federal Valuation Allowance	(2,640)	(18,110)	(145,772)
Other Deferred Adjustments	(1,691)	5,957	7,616
Effect of Federal and State Rate Reductions	(3,842)	(27,429)	(131,784)
Effect of Federal Tax Credits	2,881	1,208	(19,081)
Other	211	4,498	4,798
Income Tax Expense (Benefit) / Effective Rate	$ 27,736	$ 215,557	$ (176,458)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory U.S. Federal Income Tax Rate	21.00%	21.00%	35.00%
Net Effect of State Income Taxes	2.20%	5.60%	13.10%
Non-Controlling Interest	(39.60%)	(1.70%)	0.00%
Uncertain Tax Positions	0.00%	(0.40%)	23.10%
Effect of Spin on Federal NOL's	0.00%	0.00%	21.00%
Accrual to Tax Return Reconciliation	1.00%	0.30%	(1.00%)
Effect of Equity Compensation	14.70%	0.00%	0.00%
Effect of Change in State Valuation Allowance	55.60%	(2.10%)	(0.40%)
Effect of Change in Federal Valuation Allowance	(4.40%)	(1.70%)	(122.90%)
Other Deferred Adjustments	(2.80%)	0.60%	6.40%
Effect of Federal and State Rate Reductions	(6.40%)	(2.50%)	(111.10%)
Effect of Federal Tax Credits	4.80%	0.10%	(16.10%)
Other	0.40%	0.40%	4.00%
Income Tax Expense (Benefit) / Effective Rate	46.50%	19.60%	(148.90%)

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