PROPERTY AND EQUIPMENT - Schedule of property and equipment, net (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Total gross property and equipment	$ 93,011	$ 100,792
Accumulated depreciation	(33,851)	(28,315)
Total property and equipment, net	59,160	72,477
Computer equipment and capitalized software
Property, Plant and Equipment [Line Items]
Total gross property and equipment	42,710	46,341
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total gross property and equipment	33,776	34,485
Furniture and other equipment
Property, Plant and Equipment [Line Items]
Total gross property and equipment	9,635	9,942
Aircraft and automobile
Property, Plant and Equipment [Line Items]
Total gross property and equipment	2,598	2,621
Projects in progress
Property, Plant and Equipment [Line Items]
Total gross property and equipment	$ 4,292	$ 7,403