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Income Taxes Deferred Tax Asset (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 28, 2013
Dec. 29, 2012
Valuation Allowance [Line Items]    
Deferred Tax Assets, Net, Current $ 5,012 $ 4,622
Deferred Tax Assets, Net, Noncurrent 5,684 8,429
Non current deferred income tax liabilities (1,578) (467)
Deferred Tax Assets, Net 9,118 12,584
CA EZ tax credits [Domain]
   
Valuation Allowance [Line Items]    
Deferred Tax Assets, Net $ 4,200