Equity Awards - Summary of Stock Option Activity (Detail) (Stock options [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	May 03, 2014
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options, Outstanding, Beginning Balance	691
Stock Options, Granted	31
Stock Options, Exercised	(16)
Stock Options, Outstanding, Ending Balance	706
Stock Options, Exercisable, Ending Balance	602
Grant Date Weighted-Average Exercise Price, Outstanding, Beginning Balance	$ 19.86
Grant Date Weighted-Average Exercise Price, Granted	$ 25.49
Grant Date Weighted-Average Exercise Price, Exercised	$ 7.85
Grant Date Weighted-Average Exercise Price, Outstanding, Ending Balance	$ 20.38
Grant Date Weighted-Average Exercise Price, Exercisable, Ending Balance	$ 19.30
Weighted-Average Remaining Contractual Life (in Years), Outstanding, Ending Balance	4 years 3 months 18 days
Weighted-Average Remaining Contractual Life (in Years), Exercisable, Ending Balance	3 years 6 months
Intrinsic Value, Outstanding, Ending Balance	$ 4,968
Intrinsic Value, Exercisable, Ending Balance	$ 4,959