BUSINESS COMBINATIONS - Summary of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - Marcum LLP - USD ($) $ in Thousands	Nov. 01, 2024	Mar. 31, 2025	Dec. 31, 2024
Business Acquisition [Line Items]
Total consideration transferred	$ 1,997,781
Asset acquired:
Account receivable	169,866
Unbilled revenue	23,247
Other current assets	25,829
Property and equipment	31,221
Other intangible assets	490,000
Right-of- use asset	164,970
Deferred income taxes, net	3,485
Total identifiable asset acquired	908,618
Liabilities assumed:
Account payable	25,384
Accrued personnel costs	44,407
Other current liabilities	67,156
Contingent purchase price assumed (current and non-current)	25,042
Lease liabilities (current and non-current)	172,792
Other non-current liabilities	935	$ 40,000	$ 61,000
Total liabilities assumed	335,716
Net asset acquired	572,902
Goodwill	$ 1,424,879