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 (Finite Lived Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 31, 2015	Dec. 31, 2014	Jan. 02, 2015
Intangible Assets, Net[Abstract]
Amortization of intangibles	$ 1,786us-gaap_AmortizationOfIntangibleAssets	$ 1,856us-gaap_AmortizationOfIntangibleAssets
Finite-Lived Intangible Assets, Gross	67,800			58,780
Finite-Lived Intangible Assets, Accumulated Amortization	(25,042)			(23,256)
Finite-Lived Intangible Assets, Net	42,758us-gaap_FiniteLivedIntangibleAssetsNet			35,524us-gaap_FiniteLivedIntangibleAssetsNet
Internet Domain Names [Member]
Intangible Assets, Net[Abstract]
Indefinite-Lived Intangible Assets	1,261			1,261
In-process research and developement [Member]
Intangible Assets, Net[Abstract]
Finite-Lived Intangible Assets, Gross	4,690			4,690
Finite-Lived Intangible Assets, Accumulated Amortization	0			0
Finite-Lived Intangible Assets, Net	4,690			4,690
Technology licenses [Member]
Intangible Assets, Net[Abstract]
Finite-Lived Intangible Assets, Gross	3,000			3,000
Finite-Lived Intangible Assets, Accumulated Amortization	(2,700)			(2,625)
Finite-Lived Intangible Assets, Net	300			375
Patents [Member]
Intangible Assets, Net[Abstract]
Finite-Lived Intangible Assets, Gross	1,949			1,949
Finite-Lived Intangible Assets, Accumulated Amortization	(1,949)			(1,949)
Finite-Lived Intangible Assets, Net	0			0
Developed technology [Member]
Intangible Assets, Net[Abstract]
Finite-Lived Intangible Assets, Gross	33,270			26,670
Finite-Lived Intangible Assets, Accumulated Amortization	(8,790)			(7,828)
Finite-Lived Intangible Assets, Net	24,480			18,842
Customer relationships [Member]
Intangible Assets, Net[Abstract]
Finite-Lived Intangible Assets, Gross	20,030			17,610
Finite-Lived Intangible Assets, Accumulated Amortization	(8,003)			(7,254)
Finite-Lived Intangible Assets, Net	12,027			10,356
Trade Names [Member]
Intangible Assets, Net[Abstract]
Finite-Lived Intangible Assets, Gross	3,600			3,600
Finite-Lived Intangible Assets, Accumulated Amortization	(3,600)			(3,600)
Finite-Lived Intangible Assets, Net	0			0
Minimum [Member]
Intangible Assets, Net[Abstract]
Amortization useful life range	2 years
Maximum [Member]
Intangible Assets, Net[Abstract]
Amortization useful life range	12 years
Cambridge Semiconductor Limited [Member]
Intangible Assets, Net[Abstract]
Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					9,020
Cambridge Semiconductor Limited [Member] \| Customer relationships [Member]
Intangible Assets, Net[Abstract]
Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					2,420
Amortization useful life range	5 years		5 years
Cambridge Semiconductor Limited [Member] \| Developed technology [Member]
Intangible Assets, Net[Abstract]
Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					$ 6,600
Cambridge Semiconductor Limited [Member] \| Developed technology [Member] \| Minimum [Member]
Intangible Assets, Net[Abstract]
Amortization useful life range			3 years
Cambridge Semiconductor Limited [Member] \| Developed technology [Member] \| Maximum [Member]
Intangible Assets, Net[Abstract]
Amortization useful life range			7 years