Income Taxes Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016		Jan. 03, 2015		Dec. 28, 2013		Dec. 29, 2012
Income Tax Contingency [Line Items]
Deferred Tax Assets, Valuation Allowance	$ 22,929		$ 23,579
Valuation Allowances and Reserves, Balance	6,209		6,807		$ 3,884		$ 1,692
Valuation Allowances and Reserves, Recoveries	143		2,923	[1]	2,552	[1]
Valuation Allowances and Reserves, Deductions	(741)	[2]	$ 0		$ (360)	[2]
CA EZ tax credits [Member]
Income Tax Contingency [Line Items]
Valuation Allowances and Reserves, Adjustments	3,900
CANADA
Income Tax Contingency [Line Items]
Valuation Allowances and Reserves, Adjustments	$ 900

[1] Represents additional valuation allowance against California enterprise zone tax credits for deferred tax allowance of $1.1 million plus additional valuation allowance against Canadian deferred tax assets of $0.8 million.

[2] Represents reduction of state valuation allowance against tax credits.