Goodwill and Acquired Intangibles (Details 1) - USD ($) $ in Thousands	Dec. 31, 2016	Jan. 02, 2016
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	$ 526,537	$ 513,071
Accumulated amortization	(267,723)	(216,589)
Acquired intangibles, net	258,814	296,482
Existing technology [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	342,108	329,627
Accumulated amortization	(160,178)	(124,097)
Acquired intangibles, net	181,930	205,530
Agreements and relationships [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	174,623	173,325
Accumulated amortization	(100,778)	(86,808)
Acquired intangibles, net	73,845	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	(6,767)	(5,684)
Acquired intangibles, net	$ 3,039	$ 4,435