ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (INCOME STATEMENT CLASSIFICATION TABLE) (DETAILS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Presentation of Income Statement Reclassifications [Line Items]
Other Comprehensive Income Loss Reclassified to Income			$ 2,697	$ (3,209)
Net Income (Loss) [Member] | Derivative Valuation [Member]
Presentation of Income Statement Reclassifications [Line Items]
Other Comprehensive Income Loss Reclassified to Income	(1,059)	1,582	(2,174)	3,501
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	(262)	(145)	(523)	(292)
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	(1,472)	2,850	(3,043)	6,310
Loss on Interest Rate Swaps [Member] | Interest Expenses [Member] | Derivative Valuation [Member]
Presentation of Income Statement Reclassifications [Line Items]
Other Comprehensive Income Loss Reclassified to Income	(265)	(257)	(523)	(514)
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	678	(1,011)	1,392	(2,295)
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	18	9	33	19
Actuarial Loss on Defined 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	$ (280)	$ (154)	$ (556)	$ (311)