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Summary of Restricted Share Unit Activity (Detail) (Stock Option Plan 2010, Restricted Shares, USD $)
12 Months Ended
Jun. 29, 2012
Jun. 24, 2011
Jun. 25, 2010
Stock Option Plan 2010 | Restricted Shares
     
Number of Shares Underlying Restricted Share Units      
Unvested balance at beginning of the period 25,900    
Granted 211,266 43,420  
Issued (25,900) (17,520)  
Forfeited (42,991)    
Vested         
Unvested balance at end of the period 168,275 25,900  
Weighted-Average Grant Date Fair Value Per Share      
Unvested balance at beginning of the period $ 21.62    
Granted $ 14.37 $ 18.47  
Issued $ 21.62 $ 13.82  
Forfeited $ 14.07    
Vested         
Unvested balance at end of the period $ 14.44 $ 21.62