CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (4,218)	$ (10,363)	$ (40,076)	$ (27,497)
Other comprehensive income (loss):
Foreign currency translation adjustments	115	(87)	(129)	(42)
Comprehensive loss	$ (4,103)	$ (10,450)	$ (40,205)	$ (27,539)