SEGMENT AND GEOGRAPHICAL INFORMATION - Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
SEGMENT AND GEOGRAPHICAL INFORMATION
Revenue	$ 61,183	$ 59,583
Less:
Depreciation and amortization	1,046	1,105
Interest income	(32)	(55)
Interest expense	878	1,056
Foreign currency translation	(152)	(3)
Income tax provision	1,607	910
Net income	2,716	1,488
Fact-based Sourcing Advisory Services
SEGMENT AND GEOGRAPHICAL INFORMATION
Revenue	61,183	59,583
Less:
Compensation expense	39,132	39,988
Contract labor	5,139	4,279
Third-party costs	594	519
Travel and entertainment	2,694	2,376
Professional fees	1,981	1,895
Computer expense	1,250	1,123
Restructuring costs	425	383
Other segment expenses	$ 3,905	$ 4,519
Segment Reporting, Other Segment Item, Composition, Description	Other segment expenses include communication, occupancy, marketing, stock-based compensation, acquisition and disposition and other overhead expenses.	Other segment expenses include communication, occupancy, marketing, stock-based compensation, acquisition and disposition and other overhead expenses.
Depreciation and amortization	$ 1,046	$ 1,105
Interest income	(32)	(55)
Interest expense	878	1,056
Foreign currency translation	(152)	(3)
Income tax provision	1,607	910
Net income	$ 2,716	$ 1,488