Stock-Based Compensation - Stock options (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Options
Outstanding at beginning of period (in shares)	3,021,799	1,761,062	1,761,062
Granted (in shares)	1,628,795	1,088,000
Exercised (in shares)	(44,105)
Cancelled (in shares)	(232,987)
Outstanding at end of period (in shares)	4,373,502	2,849,062	3,021,799	1,761,062
Vested at end of period (in shares)	1,189,491	398,157
Vested and expected to vest at end of period (in shares)	4,373,502	2,849,062
Weighted average exercise price
Outstanding at beginning of period (in dollars per share)	$ 3.71	$ 0.95	$ 0.95
Granted (in dollars per share)	3.06	7.78
Exercised (in dollars per share)	0.43
Cancelled (in dollars per share)	4.24
Outstanding at end of period (in dollars per share)	3.47	3.56	$ 3.71	$ 0.95
Vested at end of period (in dollars per share)	1.95	0.96
Vested and expected to vest at end of period (in dollars per share)	$ 3.47	$ 3.56
Weighted-average remaining contractual term and Aggregate intrinsic value
Outstanding at end of period (in years)	8 years 10 months 9 days	9 years 1 month 17 days	8 years 11 months 8 days	9 years 6 months 14 days
Vested at end of period (in years)	8 years 7 months 28 days	8 years 3 months 18 days
Vested and expected to vest at end of period (in years)	8 years 10 months 9 days	9 years 1 month 17 days
Outstanding at beginning of period (in dollars)	$ 10,903	$ 723	$ 723
Granted (in dollars)		3,087
Outstanding at end of period (in dollars)	477	12,056	$ 10,903	$ 723
Vested at end of period (in dollars)	316	2,805
Vested and expected to vest at end of period (in dollars)	$ 477	$ 12,056
Weighted average grant-date fair value of stock options granted	$ 2.04	$ 5.07