Net Loss Per Share - Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net loss	$ (6,145)	$ (2,363)
Cumulative dividends on convertible preferred stock	0	(706)
Net loss attributable to common stockholders	$ (6,145)	$ (3,069)
Net loss per share attributable to common stockholders – basic and diluted	$ (0.33)	$ (0.82)
Weighted-average number of shares used in computing net loss per common share, basic and diluted	18,800,546	3,764,488