Net Loss Per Share Attributable to Common Stockholders - Other (Details) - USD ($) $ / shares in Units, $ 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
Income loss (Numerator):
Net loss - basic and diluted	$ (17,920)	$ (20,602)	$ (17,987)	$ (16,533)	$ (38,522)	$ (34,520)
Shares (Denominator):
Weighted-average shares for basic EPS (in shares)	27,744,762		27,610,398		27,726,864	27,603,948
Weighted-average shares for diluted EPS (in shares)	27,744,762		27,610,398		27,726,864	27,603,948
Basic EPS (in dollars per share)	$ (0.65)		$ (0.65)		$ (1.39)	$ (1.25)
Diluted EPS (in dollars per share)	$ (0.65)		$ (0.65)		$ (1.39)	$ (1.25)