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		$ (29,647)	$ (24,250)
Other comprehensive loss:
Foreign currency translation losses	[1]	(2,953)	(2,436)
Total other comprehensive loss	[1]	(2,953)	(2,436)
Total comprehensive loss		$ (32,600)	$ (26,686)

[1] Net of tax effect which was not material.