Fixed Assets - Schedule of Fixed Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Cost	$ 163,255	$ 63,978
Fixed assets, accumulated depreciation	(44,652)	(28,364)
Net Book Value	118,603	35,614
Computers, furniture and fixtures
Property, Plant and Equipment [Line Items]
Cost	41,839	21,373
Fixed assets, accumulated depreciation	(18,136)	(13,210)
Net Book Value	23,703	8,163
Leasehold improvements
Property, Plant and Equipment [Line Items]
Cost	91,572	22,689
Fixed assets, accumulated depreciation	(17,759)	(10,667)
Net Book Value	73,813	12,022
Capitalized Software
Property, Plant and Equipment [Line Items]
Cost	29,844	19,916
Fixed assets, accumulated depreciation	(8,757)	(4,487)
Net Book Value	$ 21,087	$ 15,429