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				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net loss	$ (9,033)	$ (4,539)	$ (2,246)	$ (3,433)	$ (13,572)	$ (5,679)
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	$ (9,033)		$ (2,246)		$ (13,572)	$ (6,346)
Denominator:
Weighted-average number of shares of common stock - diluted (in shares)	30,816		26,644		30,816	22,250
Weighted-average number of shares of common stock - basic (in shares)	30,816		26,644		30,816	22,250
Basic net loss per share (in dollars per share)	$ (0.29)		$ (0.08)		$ (0.44)	$ (0.29)
Diluted net loss per share (in dollars per share)	$ (0.29)		$ (0.08)		$ (0.44)	$ (0.29)