Stock based awards - Stock option activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Number of Options
Balance Outstanding, Beginning of the period (in shares)			6,899,977
Options granted ( in shares)			934,225
Options exercised ( in shares)			(233,655)
Options cancelled (in shares)			(8,125)
Balance Outstanding, End of the period (in shares)	7,592,422		7,592,422		6,899,977
Vested and expected to vest ( in shares)	7,592,422		7,592,422
Exercisable ( in shares)	4,535,766		4,535,766
Weighted-Average Exercise Price per Share
Weighted-average exercise price, Beginning of the period (in dollars per share)			$ 22.35
Weighted-average exercise price, Granted (in dollars per share)			22.21
Weighted-average exercise price, Exercised (in dollars per share)			7.59
Weighted-Average Exercise price, cancelled (in dollars per share)			44.93
Weighted-average exercise price, End of the period (in dollars per share)	$ 22.76		22.76		$ 22.35
Weighted-average exercise price, Vested and expected to vest at end of the period (in dollars per share)	22.76		22.76
Weighted-average exercise price, Exercisable ( in dollars per share )	$ 20.76		$ 20.76
Weighted-Average remaining contractual term (years) and Aggregate Intrinsic Value
Weighted-average remaining contractual term outstanding (in years)			7 years 6 months 14 days		7 years 8 months 1 day
Weighted-average remaining contractual term vested and expected to vest (in years)			7 years 6 months 14 days
Weighted-average remaining contractual term , Options Exercisable(in years)			6 years 6 months 18 days
Aggregate Intrinsic Value Balance outstanding	$ 33,309		$ 33,309		$ 35,133
Aggregate Intrinsic Value Vested and Expected to vest	33,309		33,309
Aggregate Intrinsic Value Exercisable	$ 26,110		$ 26,110
Weighted average grant-date fair value per share of stock options granted	$ 15.53	$ 48.4	$ 16.45	$ 47.78