Income Taxes - Income Tax Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal	$ (3,967)	$ 709	$ (6,397)
State	1,053	(578)	79
Foreign	352	600	476
Total current	(2,562)	731	(5,842)
Deferred:
Federal	(19,734)	(3,343)	(34,948)
State	(1,564)	3,496	(8,778)
Foreign	8,612	(23,297)	33
Total deferred	(12,686)	(23,144)	(43,693)
Total income tax benefit	$ (15,248)	$ (22,413)	$ (49,535)