Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Other Comprehensive Income [Abstract]
Net loss attributable to common stockholders	$ (19,503)	$ (43,568)	$ (40,390)
Other comprehensive loss:
Foreign currency translation adjustments, net of taxes	(129)	(133)	(59)
Comprehensive loss	$ (19,632)	$ (43,701)	$ (40,449)