Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015	Oct. 03, 2016
Gross carrying amount and accumulated amortization of other intangible assets
Weighted-Average Amortization Period (Years)	9 years
Intangible assets subject to amortization, Gross Amount	$ 188,981	$ 200,223
Intangible assets subject to amortization, Accumulated Amortization	(85,416)	(80,109)
Total intangible assets, Gross Amount	188,981	201,463
Amortization expense related to intangible assets	27,300	26,500	$ 17,900
Goodwill
Goodwill, Beginning Balance	272,722	228,781
Additions due to business combinations	3,408	43,941
Goodwill, Ending Balance	276,130	272,722	$ 228,781
Estimated aggregate amortization expense for intangible assets subject to amortization for each of the five succeeding fiscal years
2017	24,957
2018	22,890
2019	17,192
2020	14,697
2021	10,308
In-process research and development
Gross carrying amount and accumulated amortization of other intangible assets
Intangible assets not subject to amortization, Gross and Net Amount		1,240
Micrium
Gross carrying amount and accumulated amortization of other intangible assets
Amount of intangible assets acquired	(12,500)
Removal of fully amortized intangible assets	22,000
Acquired intangible assets	$ 9,500			$ 9,500
Core and developed technology
Gross carrying amount and accumulated amortization of other intangible assets
Weighted-Average Amortization Period (Years)	9 years
Intangible assets subject to amortization, Gross Amount	$ 157,321	170,541
Intangible assets subject to amortization, Accumulated Amortization	$ (70,181)	(70,135)
Customer relationships
Gross carrying amount and accumulated amortization of other intangible assets
Weighted-Average Amortization Period (Years)	7 years
Intangible assets subject to amortization, Gross Amount	$ 24,970	23,170
Intangible assets subject to amortization, Accumulated Amortization	$ (11,356)	(7,259)
Patents
Gross carrying amount and accumulated amortization of other intangible assets
Weighted-Average Amortization Period (Years)	6 years
Intangible assets subject to amortization, Gross Amount	$ 3,000	3,022
Intangible assets subject to amortization, Accumulated Amortization	$ (2,250)	(1,763)
Trademarks
Gross carrying amount and accumulated amortization of other intangible assets
Weighted-Average Amortization Period (Years)	7 years
Intangible assets subject to amortization, Gross Amount	$ 3,690	3,490
Intangible assets subject to amortization, Accumulated Amortization	$ (1,629)	$ (952)