Stock-based compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Mar. 07, 2024	Mar. 31, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options granted (in shares)		2,510,890
Stock options granted, weighted average exercise price (in dollars per share)		$ 7.31
Stock options granted, weighted average grant date fair value (in dollars per share)		$ 6.01
2020 Stock Option and Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options granted, weighted average exercise price (in dollars per share)	$ 22.00
New exercise price per share, tranche one (in dollars per share)	19.00
New exercise price per share, tranche two (in dollars per share)	$ 11.88
Share-based payment arrangement, plan modification, incremental cost		$ 0.1
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation costs		$ 41.2
Expected to be recognized over a weighted average period		2 years 7 months 6 days
Performance-based RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation costs		$ 2.4
Units vested (in shares)		0
Share-based compensation, number of common stock issuable per RSU vested (in shares)		1
Time-based RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation costs		$ 9.6
Expected to be recognized over a weighted average period		3 years 7 months 6 days
Units vested (in shares)		136,837
Granted (in shares)		1,013,350
Number of shares retained to cover statutory minimum withholding taxes (in shares)		15,321