Segment and Geographic Information (Revenue by Primary Distributor) (Details)	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Revenue, Major Customer [Line Items]
Revenue from all sell-through distributors	45.00%	45.00%	45.00%
Arrow Electronics Inc. (including Nu Horizons Electronics)
Revenue, Major Customer [Line Items]
Revenue from all sell-through distributors	20.00%	24.00%	23.00%
Weikeng Group
Revenue, Major Customer [Line Items]
Revenue from all sell-through distributors	12.00%	10.00%	12.00%
All others
Revenue, Major Customer [Line Items]
Revenue from all sell-through distributors	13.00%	11.00%	10.00%