DERIVATIVE FINANCIAL INSTRUMENTS (Changes in teh Fair Value of Derivative Instruments) (Details) - Foreign Exchange Contracts - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Designated as hedging instruments \| Cash Flow Hedging \| Accumulated Other Comprehensive Loss
Derivative Instruments, Gain (Loss) [Line Items]
Change in fair value	$ (2,696)	$ 0	$ (2,606)	$ 0
Designated as hedging instruments \| Cash Flow Hedging \| Cost of revenues
Derivative Instruments, Gain (Loss) [Line Items]
Net loss reclassified	(937)	0	(937)	0
Not designated as hedging instruments \| Foreign Exchange Gain/(Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Net gain recognized	$ 0	$ 20	$ 44	$ 159

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No definition available.

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624177-113959

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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