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Stock-Based Compensation (Details) (USD $)
In Thousands, except Share data in Millions, unless otherwise specified
12 Months Ended
Jan. 01, 2013
Jan. 03, 2012
Dec. 28, 2010
Apr. 30, 2011
Stock-Based Compensation        
Shares authorized for issuance under share-based compensation plan       4.8
Shares authorized for issuance under share-based compensation plan prior to amendment       3.8
Shares available for grant 1.4      
Stock-based compensation        
Total stock-based compensation $ 10,838 $ 9,635 $ 10,913  
Income tax benefit 4,146 3,685 4,139  
Total stock-based compensation, net of taxes 6,692 5,950 6,774  
Capitalized stock-based compensation 255 197 257  
Labor expenses
       
Stock-based compensation        
Total stock-based compensation 3,445 3,186 3,205  
Other operating costs and expenses
       
Stock-based compensation        
Total stock-based compensation 187 138 165  
General and administrative expenses
       
Stock-based compensation        
Total stock-based compensation $ 7,206 $ 6,311 $ 7,543