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	$ (75,461)	$ (33,427)
OTHER COMPREHENSIVE INCOME (LOSS)
Foreign currency translation adjustments	108	(643)
COMPREHENSIVE LOSS	$ (75,353)	$ (34,070)