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Reconciliation of Number of Shares Outstanding for Basic and Diluted Earning Per Share (Parenthetical) (Detail) (Stock Options And Restricted Stocks)
3 Months Ended 6 Months Ended
Aug. 02, 2014
Aug. 03, 2013
Aug. 02, 2014
Aug. 03, 2013
Stock Options And Restricted Stocks
       
Weighted Average Number of Shares Outstanding [Line Items]        
Common stock equivalents - stock options and restricted stock, excludes anti-dilutive options 520,000 231,000 538,000 273,000