Quarterly report pursuant to Section 13 or 15(d)

Basis Of Presentation (Narrative) (Detail)

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Basis Of Presentation (Narrative) (Detail) (USD $)
Jun. 24, 2012
State
Restaurants
Dec. 25, 2011
Jul. 27, 2012
IPO [Member]
Jun. 27, 2012
IPO [Member]
Jul. 27, 2012
IPO [Member]
Grants To Non Executive Employees [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]          
Number of restaurant 35        
Number of states 7        
Number of shares sold in offering 192,878 208,505 6,708,332    
Initial public offering (IPO), per share       $ 13.00  
Shares issued to cover over allotment         874,999