Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
NET LOSS	$ (36,306)	$ (2,937)	$ (118,859)	$ (17,967)
OTHER COMPREHENSIVE INCOME (LOSS):
Foreign currency translation adjustments	(76)	(7)	(46)	(9)
Other comprehensive loss	(76)	(7)	(46)	(9)
COMPREHENSIVE LOSS	$ (36,382)	$ (2,944)	$ (118,905)	$ (17,976)