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SEGMENT INFORMATION (REVENUE GEOGRAPHY) (DETAILS) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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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

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- Definition Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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