Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Gross carrying amount and accumulated amortization of other intangible assets
Weighted-Average Amortization Period	8 years
Intangible assets subject to amortization, Accumulated Amortization	$ (110,716)	$ (85,416)
Total, Gross Amount	193,860	188,981
Amortization expense related to intangible assets	27,100	27,300	$ 26,500
Goodwill
Goodwill, Beginning Balance	276,130	272,722
Additions due to business combinations	12,097	3,408
Goodwill, Ending Balance	288,227	276,130	$ 272,722
Estimated aggregate amortization expense for intangible assets subject to amortization for each of the five succeeding fiscal years
2018	24,034
2019	18,292
2020	15,797
2021	11,408
2022	7,905
Zentri
Gross carrying amount and accumulated amortization of other intangible assets
Amount of intangible assets acquired	6,700
Removal of fully amortized intangible assets	1,800
Micrium
Gross carrying amount and accumulated amortization of other intangible assets
Removal of fully amortized intangible assets	$ 1,800
Core and developed technology
Gross carrying amount and accumulated amortization of other intangible assets
Weighted-Average Amortization Period	9 years
Intangible assets subject to amortization, Gross Amount	$ 161,700	157,321
Intangible assets subject to amortization, Accumulated Amortization	$ (89,442)	(70,181)
Customer relationships
Gross carrying amount and accumulated amortization of other intangible assets
Weighted-Average Amortization Period	7 years
Intangible assets subject to amortization, Gross Amount	$ 25,470	24,970
Intangible assets subject to amortization, Accumulated Amortization	$ (16,180)	(11,356)
Patents
Gross carrying amount and accumulated amortization of other intangible assets
Weighted-Average Amortization Period	6 years
Intangible assets subject to amortization, Gross Amount	$ 3,000	3,000
Intangible assets subject to amortization, Accumulated Amortization	$ (2,750)	(2,250)
Trademarks
Gross carrying amount and accumulated amortization of other intangible assets
Weighted-Average Amortization Period	7 years
Intangible assets subject to amortization, Gross Amount	$ 3,690	3,690
Intangible assets subject to amortization, Accumulated Amortization	$ (2,344)	$ (1,629)