Stock-Based Compensation - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 15, 2013
|
Jun. 16, 2012
|
Jun. 15, 2013
|
Jun. 16, 2012
|
|
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] | ||||
Stock-based compensation expense | $ 6.5 | $ 4.2 | $ 13.7 | $ 7.9 |
Income tax benefits for grants | $ 2.1 | $ 1.4 | $ 4.5 | $ 2.5 |
Weighted-average fair values for options granted | $ 10.41 | $ 10.72 | ||
Common stock issued in connection with the exercise of stock options and restricted stock grants | 151,197 | 164,289 | 952,282 | 837,883 |
Common stock cancelled as result of forfeiture of restricted stock awards | 49,976 | 4,917 | 55,820 | 15,609 |