SEGMENT INFORMATION (REVENUE GEOGRAPHY) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales Revenue Services Net	$ 576,638	$ 633,286
Other long-term assets	108,766		$ 101,573
United States Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales Revenue Services Net	386,916	444,035
Philippines Asia Pacific India [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales Revenue Services Net	120,465	122,039
Latin America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales Revenue Services Net	$ 30,413	$ 32,757