Income Taxes, Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current [Abstract]
Federal	$ 35,861	$ 438	$ (7,460)
State	14,329	(1,442)	1,246
Foreign	413	374	234
Total current income tax expense (benefit)	50,603	(630)	(5,980)
Deferred [Abstract]
Federal	(7,096)	(290,511)	0
State	0	0	0
Total deferred income benefit	(7,096)	(290,511)	0
Income tax expense (benefit)	$ 43,507	$ (291,141)	$ (5,980)