CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (22,903)	$ (20,722)
Foreign currency translation adjustments related to continuing operations	(3,052)	69
Comprehensive loss	$ (25,955)	$ (20,653)