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Share Based Compensation - Summary of Share-Based Compensation Activity (Detail)
 9 Months Ended
Oct. 10, 2015
$ / shares
shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Shares Under Options, Outstanding, Beginning balance 494,483
Shares Under Options, Exercised/Vested (184,877)
Shares Under Options, Cancelled/Forfeited (63)
Shares Under Options, Outstanding, Ending balance 309,543
Shares Under Options, Vested and expected to vest in the future at October 10, 2015 309,543
Shares Under Options, Exercisable 309,543
Weighted Average Exercise Price, Option outstanding, Beginning balance | $ / shares $ 20.61
Weighted Average Exercise Price, Exercised/Vested | $ / shares 19.74
Weighted Average Exercise Price, Cancelled/Forfeited | $ / shares 11.50
Weighted Average Exercise Price, Options outstanding, Ending balance | $ / shares 21.13
Weighted Average Exercise Price, Vested and expected to vest in the future at October 10, 2015 | $ / shares 21.13
Weighted Average Exercise Price, Exercisable | $ / shares $ 21.13
Restricted Stock Awards, Outstanding, Beginning balance 600,653
Restricted Stock Awards, Granted 314,595
Restricted Stock Awards, Exercised/Vested (265,737)
Restricted Stock Awards, Cancelled/Forfeited (11,136)
Restricted Stock Awards, Outstanding, Ending balance 638,375
Weighted Average Grant-Date Fair Value, Beginning balance | $ / shares $ 23.08
Weighted Average Grant-Date Fair Value, Granted | $ / shares 26.59
Weighted Average Grant-Date Fair Value, Exercised/Vested | $ / shares 23.19
Weighted Average Grant-Date Fair Value, Cancelled/Forfeited | $ / shares 23.65
Weighted Average Grant-Date Fair Value, Ending balance | $ / shares $ 24.75