Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (24,205)	$ (12,921)	$ (68,810)	$ (39,118)
Other comprehensive loss:
Foreign currency translation adjustment, net of taxes	3,455	(2,049)	(722)	(1,756)
Total comprehensive loss	$ (20,750)	$ (14,970)	$ (69,532)	$ (40,874)