ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (INCOME STATEMENT CLASSIFICATION TABLE) (DETAILS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Presentation of Income Statement Reclassifications [Line Items]
Other Comprehensive Income Loss Reclassified to Income			$ 2,949	$ (3,452)
Net Income (Loss) [Member] | Derivative Valuation [Member]
Presentation of Income Statement Reclassifications [Line Items]
Other Comprehensive Income Loss Reclassified to Income	(12)	398	(2,186)	3,899
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	(254)	(147)	(763)	(447)
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	248	917	(2,795)	7,227
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	(267)	(264)	(790)	(778)
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	7	(255)	1,399	(2,550)
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	16	9	48	26
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	$ (270)	$ (156)	$ (811)	$ (473)