Shareholders' Equity - Stock Options - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended
Nov. 02, 2013	Oct. 27, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted-average grant-date fair value per share of options granted		$ 1.71
Shares exercised	10,375	143,900
Intrinsic value of options exercised during period		$ 0.1

Number of share options (or share units) exercised during the current period.

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