Net Loss Per Share - Computation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator:
Net loss	$ (7,152)	$ (9,033)	$ (4,539)	$ (662)	$ (2,246)	$ (3,433)	$ (20,724)	$ (6,341)
Less: preferred stock dividends	0			0			0	(1)
Less: undeclared dividends	0			0			0	(366)
Less: loss on induced conversion of Series A-2 Preferred Stock	0			0			0	(300)
Net loss attributable to common stockholders	$ (7,152)			$ (662)			$ (20,724)	$ (7,008)
Denominator:
Weighted-average number of shares of common stock - basic (in shares)	30,816			30,739			30,816	25,121
Weighted-average number of shares of common stock - diluted (in shares)	30,816			30,739			30,816	25,121
Basic net loss per share (in dollars per share)	$ (0.23)			$ (0.02)			$ (0.67)	$ (0.28)
Diluted net loss per share (in dollars per share)	$ (0.23)			$ (0.02)			$ (0.67)	$ (0.28)