Net Loss per Share - Potential dilutive securities excluded from the computation of diluted net loss per share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net Loss per Share
Warrants to purchase common stock	19,044	19,044	19,044	19,044
Unvested restricted stock	164,340	264,500	164,340	264,500
Stock options to purchase common stock	5,001,233	3,783,351	5,001,233	3,783,351
Total	5,184,617	4,066,895	5,184,617	4,066,895