Stock-based Compensation - Stock Option Activity (Details) - Stock options $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($) $ / shares shares
Shares
Shares outstanding, Beginning balance (in shares) | shares	885,039
Shares, Options granted (in shares) | shares	560,154
Shares, Options cancelled (in shares) | shares	(136,862)
Shares outstanding, Ending balance (in shares) | shares	1,308,331
Shares, Exercisable (in shares) | shares	617,796
Shares, Vested and expected to vest (in shares) | shares	1,308,331
Weighted Average Exercise Price
Weighted Average Exercise Price Outstanding, Beginning balance (in dollars per share) | $ / shares	$ 7.97
Weighted Average Exercise Price, Options granted (in dollars per share) | $ / shares	1.18
Weighted Average Exercise Price, Options cancelled (in dollars per share) | $ / shares	2.83
Weighted Average Exercise Price Outstanding, Ending balance (in dollars per share) | $ / shares	5.60
Weighted Average Exercise Price, Exercisable (in dollars per share) | $ / shares	9.83
Weighted Average Exercise Price, Vested and expected to vest (in dollars per share) | $ / shares	$ 5.60
Weighted Average Remaining Contractual Life
Weighted Average Remaining Contractual Life Outstanding	8 years 10 months 24 days
Weighted Average Remaining Contractual Life, Exercisable	8 years 1 month 6 days
Weighted Average Remaining Contractual Life, Vested and expected to vest	8 years 10 months 24 days
Additional disclosures
Unrecognized share-based expenses | $	$ 1.1
Weighted average period	3 years
Vesting Period	4 years
Option expiration period	10 years