Stock-based compensation - Schedule of Service Based Options Activity (Details) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares
Target-based stock options
Options
Outstanding, beginning of period (in shares) | shares	2,594,622
Exercised (in shares) | shares	(102,763)
Outstanding, end of period (in shares) | shares	2,491,859	2,594,622
Options exercisable (in shares) | shares	2,491,859
Vested or expected to vest (in shares) | shares	2,491,859
Weighted‑ Average Exercise Price
Outstanding, beginning of period (in dollars per share) | $ / shares	$ 6.61
Exercised (in dollars per share) | $ / shares	6.01
Outstanding, end of period (in dollars per share) | $ / shares	6.64	$ 6.61
Options exercisable (in dollars per share) | $ / shares	6.64
Vested or expected to vest (in dollars per share) | $ / shares	$ 6.64
Weighted‑ Average Remaining Contractual Term (Years)
Remaining term, options outstanding	3 years 10 months 24 days	4 years 3 months 18 days
Remaining term, options exercisable	3 years 10 months 24 days
Remaining term, options vested or expected to vest	3 years 10 months 24 days
Aggregate Intrinsic Value (in thousands)
Outstanding | $	$ 24,571	$ 29,697
Exercised | $	1,285
Options exercisable | $	24,571
Vested or expected to vest | $	$ 24,571
Service-based stock option
Options
Outstanding, beginning of period (in shares) | shares	1,048,885
Exercised (in shares) | shares	(200,875)
Outstanding, end of period (in shares) | shares	848,010	1,048,885
Options exercisable (in shares) | shares	848,010
Vested or expected to vest (in shares) | shares	848,010
Weighted‑ Average Exercise Price
Outstanding, beginning of period (in dollars per share) | $ / shares	$ 5.54
Exercised (in dollars per share) | $ / shares	5.67
Outstanding, end of period (in dollars per share) | $ / shares	5.51	$ 5.54
Options exercisable (in dollars per share) | $ / shares	5.51
Vested or expected to vest (in dollars per share) | $ / shares	$ 5.51
Weighted‑ Average Remaining Contractual Term (Years)
Remaining term, options outstanding	3 years 1 month 6 days	3 years 2 months 12 days
Remaining term, options exercisable	3 years 1 month 6 days
Remaining term, options vested or expected to vest	3 years 1 month 6 days
Aggregate Intrinsic Value (in thousands)
Outstanding | $	$ 9,317	$ 13,129
Exercised | $	2,828
Options exercisable | $	9,317
Vested or expected to vest | $	$ 9,317