Stock-Based Compensation - Stock option activity (Details) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares
Options Outstanding
Outstanding at beginning of period (in shares)	4,960,553
Granted (in shares)	1,677,205
Exercised (in shares)	(324)
Cancelled/forfeited (in shares)	(662,194)
Outstanding at end of period (in shares)	5,975,240	4,960,553
Exercisable at end of period (in shares)	2,410,413
Weighted Average Exercise Price
Outstanding (in dollars per share) | $ / shares	$ 6.62	$ 8.04
Granted (in dollars per share) | $ / shares	2.71
Exercised (in dollars per share) | $ / shares	2.69
Cancelled/forfeited (in dollars per share) | $ / shares	7.35
Exercisable at end of period (in dollars per share) | $ / shares	$ 7.27
Weighted Average Remaining Contractual Term (In years)
Outstanding (in years)	8 years 4 months 28 days	8 years 7 months 2 days
Exercisable at end of period (in years)	7 years 10 months 9 days
Aggregate Intrinsic Value
Outstanding (in dollars) | $	$ 70	$ 89
Exercisable (in dollars) | $	$ 31