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Earnings Per Share - Additional Information (Detail) - shares
3 Months Ended 9 Months Ended
Oct. 31, 2015
Nov. 01, 2014
Oct. 31, 2015
Nov. 01, 2014
Earnings Per Share [Abstract]        
Stock options and restricted stock units not included in the computation of diluted earnings per share 1,300,000 556,000 1,300,000 510,000