Goodwill and Acquired Intangibles (Details 1) - USD ($) $ in Thousands	9 Months Ended
	Oct. 03, 2015	Jan. 03, 2015
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	$ 511,759	$ 514,146
Accumulated amortization	(200,954)	(154,814)
Acquired intangibles, net	310,805	359,332
In-process technology	1,600	1,600
Intangible assets, gross (excluding goodwill)	513,359	515,746
Intangible assets, net (excluding goodwill)	312,405	360,932
Existing Technology [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	328,253	328,325
Accumulated amortization	(114,359)	(84,822)
Acquired intangibles, net	213,894	243,503
Agreements and relationships [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	173,387	175,202
Accumulated amortization	(81,333)	(65,512)
Acquired intangibles, net	92,054	109,690
Tradenames Trademarks And Patents [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	10,119	10,619
Accumulated amortization	(5,262)	(4,480)
Acquired intangibles, net	$ 4,857	$ 6,139
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Expected time for completion of in-process research and development	3 months
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Expected time for completion of in-process research and development	6 months