Income Taxes Income Taxes (Valuation allowance for Deferred Tax Asset) (Details) - Valuation Allowance of Deferred Tax Assets - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 3,978	$ 3,413	$ 1,579	$ 1,580
Charged to costs and expenses	0	2,474	0
Adjustments to balance sheet	565	(640)	(1)
Balance at end of period	$ 3,978	$ 3,413	$ 1,579