SEGMENT INFORMATION (REVENUE GEOGRAPHY) (DETAILS) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 288,383	$ 292,654
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	131,747	110,576
Philippines [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	86,108	78,665
Latin America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	45,028	47,896
Europe Middle East Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	16,984	38,366
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	4,290	12,953
Asia Pacific[ Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 4,226	$ 4,198