Equipment and leasehold improvements - Schedule of Equipment and Leasehold Improvements (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Equipment and leasehold improvements, gross	$ 52,961	$ 42,501
Less: accumulated depreciation	(33,640)	(27,317)
Equipment and leasehold improvements, net	19,321	15,184
Computers
Property, Plant and Equipment [Line Items]
Equipment and leasehold improvements, gross	20,920	19,494
Software
Property, Plant and Equipment [Line Items]
Equipment and leasehold improvements, gross	5,301	2,352
Furniture/fixtures
Property, Plant and Equipment [Line Items]
Equipment and leasehold improvements, gross	5,084	4,934
Leasehold improvements
Property, Plant and Equipment [Line Items]
Equipment and leasehold improvements, gross	18,564	13,658
Capital in progress
Property, Plant and Equipment [Line Items]
Equipment and leasehold improvements, gross	$ 3,092	$ 2,063