Acquisitions and Acquisition-Related Contingent Consideration (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013	Jun. 13, 2014	Apr. 22, 2013
Business Acquisition [Line Items]
Transaction costs associated with acquisitions	$ 0.7	$ 3.7	$ 8.7
Jasper [Member]
Business Acquisition [Line Items]
Cash acquired				$ 28.7
Total consideration paid, net of cash acquired				$ 139.4
Other 2014 Acquisitions [Member]
Business Acquisition [Line Items]
Cash acquired	2.1
Total cash consideration paid, net of cash acquired	$ 27.5
Tensilica [Member]
Business Acquisition [Line Items]
Cash acquired					$ 26.3
Total consideration paid, net of cash acquired					$ 319.3