Property and equipment, net - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Computer software capitalized	$ 13,192	$ 9,979
Computer software amortized	1,056	1,084	$ 1,398
Depreciation expense	3,105	2,812	2,635
Write downs	$ 344	$ 10	$ 20
Swiss federal statutory rate	8.50%	8.50%	8.50%