Income Taxes, Domestic and Foreign Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Domestic and foreign income (loss) before income taxes [Abstract]
Domestic	$ (19,606)	$ (15,865)
Foreign	37	38
Loss before income taxes	$ (19,569)	$ (15,827)