The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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GOODWILL AND INTANGIBLE ASSETS: (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Intangible assets
Gross carrying value of amortizable intangible assets	$ 85,760		$ 85,760		$ 85,548
Accumulated Amortization	(48,420)		(48,420)		(43,481)
Net carrying value of amortizable intangible assets	37,340		37,340		42,067
Amortization expense of intangible assets	2,600	$ 2,900	4,900	$ 6,500
Total amortizable intangible assets, excluding IPR&D
Intangible assets
Gross carrying value of amortizable intangible assets					71,784
Accumulated Amortization					(43,481)
Net carrying value of amortizable intangible assets	37,340		37,340		28,303
Licensed technology
Intangible assets
Gross carrying value of amortizable intangible assets	2,554		2,554		2,344
Accumulated Amortization	(1,199)		(1,199)		(917)
Net carrying value of amortizable intangible assets	1,355		1,355		1,427
Developed technology
Intangible assets
Gross carrying value of amortizable intangible assets	69,830		69,830		56,064
Accumulated Amortization	(36,006)		(36,006)		(32,130)
Net carrying value of amortizable intangible assets	33,824		33,824		23,934
Customer relationship
Intangible assets
Gross carrying value of amortizable intangible assets	13,376		13,376		13,376
Accumulated Amortization	(11,215)		(11,215)		(10,434)
Net carrying value of amortizable intangible assets	$ 2,161		$ 2,161		2,942
In-process research and development
Intangible assets
Gross carrying value of amortizable intangible assets					13,764
Net carrying value of amortizable intangible assets					$ 13,764