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Net Income Per Share - Additional Information (Detail) (Nonparticipating Securities - Stock Options)	3 Months Ended
	May 02, 2015	May 03, 2014
Nonparticipating Securities - Stock Options
Earnings Per Share Disclosure
Antidilutive securities excluded from the computations of earnings per share	71,200	24,000

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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