v2.4.0.6
Stock-Based Compensation - Activity with Respect to Performance - Based RSUs with Future Settlement at Vesting in Common Shares (Detail) (USD $)
3 Months Ended
Sep. 29, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Grant Date Fair Value, Granted, estimated based on annual target diluted earnings per share   
Performance-based RSUs [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of common shares underlying RSUs, Nonvested at June 30, 2012 51,900
Number of common shares underlying RSUs, Granted, estimated based on annual target diluted earnings per share 27,700
Number of common shares underlying RSUs, Vested (17,300)
Number of common shares underlying RSUs, Forfeited/Cancelled (1,400)
Number of common shares underlying RSUs, Nonvested at September 29, 2012 60,900
Grant Date Fair Value, Nonvested at June 30, 2012 $ 10.51
Grant Date Fair Value, Granted, estimated based on annual target diluted earnings per share $ 14.88
Grant Date Fair Value, Vested $ 10.51
Grant Date Fair Value, Forfeited/Cancelled $ 12.09
Grant Date Fair Value, Nonvested at September 29, 2012 $ 12.46