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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (INCOME STATEMENT CLASSIFICATION TABLE) (DETAILS) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Presentation of Income Statement Reclassifications [Line Items]      
Other Comprehensive Income Loss Reclassified to Income $ (3,621) $ (1,508) $ (5,317)
Net Income (Loss) [Member] | Derivative Valuation [Member]
      
Presentation of Income Statement Reclassifications [Line Items]      
Other Comprehensive Income Loss Reclassified to Income 4,190 2,337 5,580
Net Income (Loss) [Member] | Other Accumulated Other Comprehensive Income Loss [Member]
      
Presentation of Income Statement Reclassifications [Line Items]      
Other Comprehensive Income Loss Reclassified to Income (569) (829) (417)
Gain Loss on Foreign Currency Forward Contracts [Member] | Revenue [Member] | Derivative Valuation [Member]
      
Presentation of Income Statement Reclassifications [Line Items]      
Other Comprehensive Income Loss Reclassified to Income 7,973 4,638 9,297
Loss on Interest Rate Swaps [Member] | Interest Expense [Member] | Derivative Valuation [Member]
      
Presentation of Income Statement Reclassifications [Line Items]      
Other Comprehensive Income Loss Reclassified to Income (1,047) (741) 0
Tax Effect [Member] | Provision for Income Taxes [Member] | Derivative Valuation [Member]
      
Presentation of Income Statement Reclassifications [Line Items]      
Other Comprehensive Income Loss Reclassified to Income (2,736) (1,560) (3,717)
Tax Effect [Member] | Provision for Income Taxes [Member] | Other Accumulated Other Comprehensive Income Loss [Member]
      
Presentation of Income Statement Reclassifications [Line Items]      
Other Comprehensive Income Loss Reclassified to Income 36 53 27
Actuarial Loss on Define Benefit Plan [Member] | Cost of Services [Member] | Other Accumulated Other Comprehensive Income Loss [Member]
      
Presentation of Income Statement Reclassifications [Line Items]      
Other Comprehensive Income Loss Reclassified to Income $ (605) $ (882) $ (444)