ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS): (Details 2) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Reclassifications out of accumulated other comprehensive income
Cost of revenues	$ (47,178)	$ (34,433)	$ (88,265)	$ (68,164)
Research and development	(62,576)	(49,506)	(120,694)	(97,843)
Sales and marketing	(23,366)	(18,723)	(45,924)	(38,002)
General and administrative	(10,670)	(9,461)	(20,371)	(17,676)
Other income (loss), net (Note 11)	912	357	(1,557)	591
Net income (loss)	$ 19,248	$ (8,867)	29,744	(19,847)
Amount Reclassified from Other Comprehensive Income / Loss
Reclassifications out of accumulated other comprehensive income
Net income (loss)			(3,027)	1,268
Gains / Losses on Derivatives \| Amount Reclassified from Other Comprehensive Income / Loss
Reclassifications out of accumulated other comprehensive income
Cost of revenues			(205)	78
Research and development			(2,251)	969
Sales and marketing			(234)	114
General and administrative			(320)	117
Cost of revenues and Operating expenses			(3,010)	1,278
Net income (loss)			(3,010)	1,278
Unrealized Gains / Losses on Available-for-Sale Securities \| Amount Reclassified from Other Comprehensive Income / Loss
Reclassifications out of accumulated other comprehensive income
Other income (loss), net (Note 11)			$ (17)	$ (10)

The aggregate cost of goods produced and sold and services rendered during the reporting period.

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