SEGMENT INFORMATION (REVENUE GEOGRAPHY) (DETAILS) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 302,221	$ 288,383
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	146,469	131,747
Philippines [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	86,666	86,108
Latin America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	42,046	45,028
Europe Middle East Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	19,217	16,984
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	1,423	4,290
Asia Pacific[ Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 6,400	$ 4,226