CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (62,147)	$ 4,930	$ (14,516)
Currency translation adjustments, net of income tax	1,084	(10,661)	16,739
Comprehensive (loss) income	$ (61,063)	$ (5,731)	$ 2,223