ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (INCOME STATEMENT CLASSIFICATION TABLE) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Presentation of Income Statement Reclassifications [Line Items]
Sales Revenue Services Net	$ 2,462,817	$ 2,443,707	$ 2,273,062
Benefit from (provision for) income taxes	(22,460)	(27,115)	(49,695)
Net income	18,264	117,333	158,189
Accumulated Other Comprehensive Income (Loss)
Presentation of Income Statement Reclassifications [Line Items]
Net Income (Loss) - Other	(2,304)	2,424	(3,367)
Foreign Currency Translation Adjustment
Presentation of Income Statement Reclassifications [Line Items]
Net Income (Loss) - Other	301
Tax effect
Presentation of Income Statement Reclassifications [Line Items]
Provision for income taxes - Other	37	30	32
Derivative Valuation, Net of Tax
Presentation of Income Statement Reclassifications [Line Items]
Net Income (Loss) - Other	(2,934)	2,152	(3,655)
Cost of Services
Presentation of Income Statement Reclassifications [Line Items]
Cost of services	(366)	(302)	(320)
Reclassification from accumulated other comprehensive income
Presentation of Income Statement Reclassifications [Line Items]
Net Income (Loss) - Other	(329)	(272)	(288)
Reclassification from accumulated other comprehensive income | Tax effect
Presentation of Income Statement Reclassifications [Line Items]
Benefit from (provision for) income taxes	(1,030)	754	(1,284)
Reclassification from accumulated other comprehensive income | Derivative Valuation, Net of Tax
Presentation of Income Statement Reclassifications [Line Items]
Net income	2,934	(2,152)	3,655
Foreign Exchange Forward | Reclassification from accumulated other comprehensive income | Foreign Currency Translation Adjustment
Presentation of Income Statement Reclassifications [Line Items]
Sales Revenue Services Net	$ 3,964	$ (2,906)	$ 4,939