ACCUMULATED OTHER COMPREHENSIVE LOSS: (Details 2) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Reclassifications out of accumulated other comprehensive income
Total reclassifications for the period	$ (137)	$ 3,646
Cost of revenues and operating expenses [Member]
Reclassifications out of accumulated other comprehensive income
Realized (gains)/losses on derivatives designated as hedging instruments	(623)	3,630
Cost of revenues [Member]
Reclassifications out of accumulated other comprehensive income
Realized (gains)/losses on derivatives designated as hedging instruments	(18)	182
Research and development expense [Member]
Reclassifications out of accumulated other comprehensive income
Realized (gains)/losses on derivatives designated as hedging instruments	(544)	2,974
Sales and marketing [Member]
Reclassifications out of accumulated other comprehensive income
Realized (gains)/losses on derivatives designated as hedging instruments	(25)	209
General and administrative expense [Member]
Reclassifications out of accumulated other comprehensive income
Realized (gains)/losses on derivatives designated as hedging instruments	(36)	265
Other nonoperating income (expense) [Member]
Reclassifications out of accumulated other comprehensive income
Realized (gains)/losses on available-for-sale securities	$ 486	$ 16

Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e689-108580

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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