Stock-Based Compensation - Summary of Share-Based Compensation Activity (Detail) (USD $)	3 Months Ended
	Jun. 22, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Shares Under Options, Outstanding, Beginning balance	653,471
Shares Under Options, Granted
Shares Under Options, Exercised/Vested	(3,625)
Shares Under Options, Cancelled/Forfeited	(2,750)
Shares Under Options, Outstanding, Ending balance	647,096
Shares Under Options, Vested and expected to vest in the future at June 22, 2013	647,096
Shares Under Options, Exercisable at June 22, 2013	647,096
Shares Under Options, Outstanding, Weighted Average Exercise Price, Option outstanding, Beginning balance	$ 18.82
Shares Under Options, Granted, Weighted Average Exercise Price
Shares Under Options, Exercised/Vested, Weighted Average Exercise Price	$ 2.32
Shares Under Options, Cancelled/Forfeited, Weighted Average Exercise Price	$ 2.29
Shares Under Options, Outstanding, Weighted Average Exercise Price, Ending balance	$ 18.98
Shares Under Options, Weighted Average Exercise Price, Vested and expected to vest in the future at June 22, 2013	$ 18.98
Shares Under Options, Weighted Average Exercise Price, Options exercisable	$ 18.98
Restricted Stock Awards, Outstanding, Beginning balance	546,182
Restricted Stock Awards, Granted	210,708
Restricted Stock Awards, Exercised/Vested	(225,600)
Restricted Stock Awards, Cancelled/Forfeited
Restricted Stock Awards, Outstanding, Ending balance	531,290
Restricted Stock Awards, Outstanding, Weighted Average Grant-Date Fair Value, Beginning balance	$ 16.59
Restricted Stock Awards, Granted, Weighted Average Grant-Date Fair Value	$ 17.65
Restricted Stock Awards, Exercised/ Vested, Weighted Average Grant-Date Fair Value	$ 16.94
Restricted Stock Awards, Cancelled/Forfeited, Weighted Average Grant-Date Fair Value
Restricted Stock Awards, Outstanding, Weighted Average Grant-Date Fair Value, Ending balance	$ 16.86