CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (11,031)	$ (10,206)
Other comprehensive loss:
Change in unrealized loss on investments, net of income tax	(8)	0
Change in foreign currency translation adjustment, net of income tax	(8)	(33)
Total other comprehensive loss	(16)	(33)
Comprehensive loss	$ (11,047)	$ (10,239)