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Commitments and Contingencies (Details) (USD $)
3 Months Ended
Mar. 30, 2013
Apr. 01, 2013
Dec. 29, 2012
Mar. 31, 2012
Information about Litigation Matters        
Number Of Vendors Company Purchased Engines 1      
Letters of Credit        
Letter of credit outstanding outside of the Senior credit facility $ 8,400,000 $ 18,300,000    
Restricted Cash and Cash Equivalents, Current 8,400,000   8,400,000 21,870,000
New Store Construction Projects [Member]
       
Construction Commitments        
Property and construction commitments 5,400,000      
DC Construction Projects [Member]
       
Construction Commitments        
Property and construction commitments 7,600,000      
SSC Construction Projects [Member]
       
Construction Commitments        
Property and construction commitments 55,300,000      
Letters Of Credit [Member]
       
Letters of Credit        
Letters of Credit Outstanding, Amount $ 46,000,000