Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Summary Of Stock-Based Compensation Activity) (Detail)

v2.4.0.6
Stock-Based Compensation (Summary Of Stock-Based Compensation Activity) (Detail) (USD $)
9 Months Ended
Sep. 23, 2012
Schedule Of Stock Options [Line Items]  
Outstanding and expected to vest at December 25, 2011 $ 4.36
Granted $ 15.63
Forfeited $ 8.99
Outstanding and expected to vest at September 23, 2012 $ 5.28
Exercisable at September 23, 2012 $ 3.72
Outstanding and expected to vest at December 25, 2011 970,273
Granted 88,297
Forfeited (4,621)
Outstanding and expected to vest at September 23, 2012 1,053,949
Exercisable at September 23, 2012 841,121
Outstanding and expected to vest at September 23, 2012 $ 18,387
Exercisable at September 23, 2012 $ 15,993
Outstanding and expected to vest at September 23, 2012 5 years 5 months 16 days
Exercisable at September 23, 2012 4 years 9 months 15 days