BUSINESS COMBINATIONS - Summary of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Nov. 01, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Liabilities assumed:
Goodwill		$ 2,331,461	$ 865,180	$ 819,917
Marcum LLP
Business Acquisition [Line Items]
Total consideration transferred	$ 1,997,781
Asset acquired:
Account receivable	170,139
Unbilled revenue	23,247
Other current assets	25,914
Property and equipment	31,292
Other intangible assets	490,000
Right-of- use asset	164,970
Deferred income taxes, net	3,427	$ 3,400
Total identifiable asset acquired	908,989
Liabilities assumed:
Account payable	25,370
Accrued personnel costs	44,650
Other current liabilities	27,267
Contingent purchase price assumed (current and non-current)	24,232
Lease liabilities (current and non-current)	172,792
Other non-current liabilities	61,967
Total liabilities assumed	356,278
Net asset acquired	552,711
Goodwill	$ 1,445,070