SEGMENT INFORMATION (REVENUE GEOGRAPHY) (DETAILS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 289,692	$ 288,798	$ 578,075	$ 581,452
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	132,341	111,857	264,088	222,433
Philippines [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	88,049	83,336	174,158	162,001
Latin America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	44,303	46,259	89,331	94,155
Europe Middle East Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	16,638	33,085	33,621	71,451
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	4,002	10,288	8,292	23,241
Asia Pacific[ Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 4,359	$ 3,973	$ 8,585	$ 8,171