SEGMENT INFORMATION (REVENUE GEOGRAPHY) (DETAILS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 296,995	$ 286,268	$ 875,070	$ 867,720
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	137,205	119,572	401,294	342,005
Philippines [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	89,206	83,299	263,365	245,301
Latin America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	43,343	47,914	132,673	142,069
Europe Middle East Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	18,929	22,164	52,551	93,614
Asia Pacific[ Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	4,504	4,955	13,087	13,126
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 3,808	$ 8,364	$ 12,100	$ 31,605