UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net Loss	$ (4,190)	$ (7,581)	$ (16,317)	$ (23,733)
Unrealized Gain (Loss) on Available-for-Sale Debt Instrument Investments	5	4	5	(4)
Foreign Currency Translation Adjustments	0	0	(3)	3
Comprehensive Loss	$ (4,185)	$ (7,577)	$ (16,315)	$ (23,734)