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Basis Of Presentation Basis of Presentation Narrative (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 30, 2012
Entity Information [Line Items]  
Number of Restaurants 572
Number of States in which Entity Operates 13
Number of Restaurants Acquired 278
Long-term Debt, Fair Value $ 162.0
Minimum [Member]
 
Entity Information [Line Items]  
Weeks In Fiscal Period 52
Maximum [Member]
 
Entity Information [Line Items]  
Weeks In Fiscal Period 53