Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ (3,557)	$ 3,215	$ (1,694)
State	169	400	120
Foreign	(2,032)	3,809	1,394
Current income tax (benefit) expense	(5,420)	7,424	(180)
Deferred:
Federal	(2,886)	(7,630)	(486)
State	(2,937)	(1,667)	(153)
Foreign	(20,159)	3,006	447
Deferred income tax benefit	(25,982)	(6,291)	(192)
Income tax (benefit) expense	$ (31,402)	$ 1,133	$ (372)