CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME Statement - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net (loss) income	$ (10,674)	$ (13,555)	$ 48,219
Other comprehensive income (loss):
Foreign currency translation adjustments	(1,341)	7,470	(1,717)
Comprehensive (loss) income	$ (12,015)	$ (6,085)	$ 46,502