Net Loss per Share - Antidilutive securities (Details) - shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net Loss per Share
Antidilutive securities excluded from common stock (in shares)	4,806,953	20,837,268
Redeemable convertible preferred stock (as converted to common stock)
Net Loss per Share
Antidilutive securities excluded from common stock (in shares)	0	19,185,183
Unvested restricted common stock
Net Loss per Share
Antidilutive securities excluded from common stock (in shares)	297,754	7,211
Unvested shares from early exercises
Net Loss per Share
Antidilutive securities excluded from common stock (in shares)	96,532	76,209
Stock options to purchase common stock
Net Loss per Share
Antidilutive securities excluded from common stock (in shares)	4,412,667	1,568,665