Net loss per share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Anti-dilutive securities
Anti-dilutive securities (in shares)	16,052,928	12,241,188	16,052,928	12,241,188
Stock options
Anti-dilutive securities
Anti-dilutive securities (in shares)	12,359,185	10,511,694	12,359,185	10,511,694
Unvested restricted stock units
Anti-dilutive securities
Anti-dilutive securities (in shares)	3,671,153	1,706,904	3,671,153	1,706,904
Warrants
Anti-dilutive securities
Anti-dilutive securities (in shares)	22,590	22,590	22,590	22,590