ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (INCOME STATEMENT CLASSIFICATION TABLE) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Presentation of Income Statement Reclassifications [Line Items]
Sales Revenue Services Net	$ 2,443,707	$ 2,273,062	$ 1,949,248
Benefit from (provision for) income taxes	(27,115)	(49,695)	(40,937)
Net income	117,333	158,189	129,331
Accumulated Other Comprehensive Income (Loss)
Presentation of Income Statement Reclassifications [Line Items]
Net Income (Loss) - Other	2,424	(3,367)	(21,019)
Foreign Currency Translation Adjustment
Presentation of Income Statement Reclassifications [Line Items]
Net Income (Loss) - Other			(19,619)
Tax effect
Presentation of Income Statement Reclassifications [Line Items]
Provision for income taxes - Other	30	32	60
Derivative Valuation, Net of Tax
Presentation of Income Statement Reclassifications [Line Items]
Net Income (Loss) - Other	2,152	(3,655)	(1,928)
Cost of Services
Presentation of Income Statement Reclassifications [Line Items]
Cost of services	(302)	(320)	(588)
Reclassification from accumulated other comprehensive income
Presentation of Income Statement Reclassifications [Line Items]
Net Income (Loss) - Other	(272)	(288)	(528)
Reclassification from accumulated other comprehensive income | Tax effect
Presentation of Income Statement Reclassifications [Line Items]
Benefit from (provision for) income taxes	754	(1,284)	(690)
Reclassification from accumulated other comprehensive income | Derivative Valuation, Net of Tax
Presentation of Income Statement Reclassifications [Line Items]
Net income	(2,152)	3,655	1,928
Foreign Exchange Forward | Reclassification from accumulated other comprehensive income | Foreign Currency Translation Adjustment
Presentation of Income Statement Reclassifications [Line Items]
Sales Revenue Services Net	$ (2,906)	$ 4,939	$ 2,618