CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 629	$ (62,147)	$ 4,930
Currency translation adjustments, net of income tax	7,239	1,084	(10,661)
Comprehensive income (loss)	$ 7,868	$ (61,063)	$ (5,731)