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Potential Common Stock Equivalents Excluded From Computation of Diluted Earning Per Share (Detail) (USD $)
12 Months Ended
Feb. 01, 2014
Feb. 02, 2013
Jan. 28, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Anti dilutive shares 443,000    
Stock Options
     
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Anti dilutive shares 2,088,000 1,634,000 2,755,000
Range of exercise prices of such options, minimum $ 4.96 $ 3.76 $ 3.23
Range of exercise prices of such options, maximum $ 10.26 $ 10.26 $ 10.26