Business Combinations and Goodwill (Narrative) (Details) - USD ($)		3 Months Ended			7 Months Ended	9 Months Ended
	Mar. 10, 2015	Oct. 03, 2015	Jul. 04, 2015	Sep. 27, 2014	Oct. 03, 2015	Oct. 03, 2015	Sep. 27, 2014	Jan. 03, 2015	Dec. 04, 2014
Business Acquisition [Line Items]
Acquisition related charges		$ 610,000		$ 0		$ 22,078,000	$ 0
Goodwill and Intangible Asset Impairment						0	$ 0
Goodwill		280,209,000			$ 280,209,000	280,209,000		$ 44,808,000
Silicon Image, Inc
Business Acquisition [Line Items]
Increase (Decrease) in Accrued Liabilities			$ 1,400,000
Business Acquisition, Percentage of Voting Interests Acquired	100.00%								7.00%
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual					96,800,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual					43,900,000
Acquisition related charges					8,200,000
Goodwill	$ 235,400,000	235,401,000			$ 235,401,000	235,401,000
Fair value of partially vested stock options and RSUs assumed	$ 5,139,000	10,100,000
Scenario, Adjustment [Member] | Silicon Image, Inc
Business Acquisition [Line Items]
Acquisition related charges		$ (600,000)				$ (30,200,000)