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Income Taxes - Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current tax provision (benefit):
Federal	$ (4,395)	$ (21,598)	$ 5,853
State	891	1,465	180
Foreign		1,575
Total current tax provision (benefit)	(3,504)	(18,558)	6,033
Deferred tax provision (benefit):
Federal	95,655	92,250	(166,890)
State	14,055	12,250	20,133
Total deferred tax provision (benefit)	109,710	104,500	(146,757)
Provision (benefit) for income taxes	$ 106,206	$ 85,942	$ (140,724)

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- Definition

The component of income tax expense for the period representing the portion of the increase (decrease) in the entity's deferred tax assets and liabilities due to the current period provision for deferred tax expense (benefit).

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