Goodwill and Acquired Intangibles (Details 1) - USD ($) $ in Thousands	Jul. 02, 2016	Jan. 02, 2016
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	$ 527,058	$ 513,071
Accumulated amortization	(239,170)	(216,589)
Acquired intangibles, net	287,888	296,482
Existing Technology [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	342,575	329,627
Accumulated amortization	(139,895)	(124,097)
Acquired intangibles, net	202,680	205,530
Agreements and relationships [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	174,677	173,325
Accumulated amortization	(93,156)	(86,808)
Acquired intangibles, net	81,521	86,517
Tradenames Trademarks And Patents [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	9,806	10,119
Accumulated amortization	(6,119)	(5,684)
Acquired intangibles, net	$ 3,687	$ 4,435