Income Taxes - Schedule of Compnents of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current
U.S. federal	$ 4,424	$ (4,848)	$ 430
State	(353)	(644)	381
Foreign	(3,604)	(7,559)	(7,276)
Total current portion	467	(13,051)	(6,465)
Deferred
U.S. federal	2,094	2,277	(797)
State	494	(72)	(64)
Foreign	564	1,453	1,447
Total deferred portion	3,152	3,658	586
Total income tax benefit (expense)	$ 3,619	$ (9,393)	$ (5,879)