OVERVIEW AND BASIS OF PRESENTATION (NARRATIVE) (Details)	3 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2023	Mar. 31, 2023	Oct. 26, 2019
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Year Founded		1982
Number Of Clients		750
Number of Countries in which Entity Operates		22
Number of employees		51,600
Prior Period Reclassification Adjustment	$ 14,200,000		$ 14,200,000
Percepta LLC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
ownership percentage		55.00%
FCR
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
ownership percentage		100.00%			70.00%	70.00%
Serendebyte
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
ownership percentage		100.00%		70.00%