Net Loss Per Share - Antidilutive securities (Details) - shares	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Antidilutive securities
Antidilutive securities excluded from computation (in shares)	4,863,245	3,073,724
Outstanding stock options
Antidilutive securities
Antidilutive securities excluded from computation (in shares)	4,373,502	2,849,062
Unvested restricted stock
Antidilutive securities
Antidilutive securities excluded from computation (in shares)	11,833	23,666
Restricted Stock Units
Antidilutive securities
Antidilutive securities excluded from computation (in shares)	138,185	200,996
Warrant
Antidilutive securities
Antidilutive securities excluded from computation (in shares)	339,725