SEGMENT INFORMATION (REVENUE GEOGRAPHY) (DETAILS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 286,268	$ 304,235	$ 867,720	$ 878,850
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	119,572	110,122	342,005	288,935
Philippines
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	83,299	86,957	245,301	255,983
Latin America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	47,914	51,188	142,069	159,852
Europe / Middle East / Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	22,164	39,031	93,614	122,802
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	8,364	12,829	31,605	38,674
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 4,955	$ 4,108	$ 13,126	$ 12,604