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Earnings Per Share - Additional Information (Detail) - shares
3 Months Ended 6 Months Ended
Aug. 01, 2015
Aug. 02, 2014
Aug. 01, 2015
Aug. 02, 2014
Earnings Per Share [Abstract]        
Stock options and restricted stock units not included in the computation of diluted earnings per share 1,300,000 1,600,000 171,000 487,000