Goodwill and Acquired Intangibles (Details 1) - USD ($) $ in Thousands	Oct. 01, 2016	Jan. 02, 2016
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	$ 526,943	$ 513,071
Accumulated amortization	(253,562)	(216,589)
Acquired intangibles, net	273,381	296,482
Existing Technology [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	342,427	329,627
Accumulated amortization	(150,109)	(124,097)
Acquired intangibles, net	192,318	205,530
Agreements and relationships [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	174,709	173,325
Accumulated amortization	(97,010)	(86,808)
Acquired intangibles, net	77,699	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	9,807	10,119
Accumulated amortization	(6,443)	(5,684)
Acquired intangibles, net	$ 3,364	$ 4,435