Employee benefit plan - Schedule of Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Retirement Benefits [Abstract]
Service cost	$ 1,161	$ 857	$ 832
Interest cost	819	517	423
Effect of foreign exchange rates	1,213	431	(194)
Compensation-non-retirement post-employment benefits	183	237	694
Settlement and curtailment gain	(62)	(82)	(406)
Other	18	1	3
Total net periodic pension cost	$ 3,332	$ 1,961	$ 1,352