Quarterly report pursuant to Section 13 or 15(d)

Net Income Per Common Share - Additional Information (Detail)

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Net Income Per Common Share - Additional Information (Detail) - shares
shares in Thousands
3 Months Ended 6 Months Ended
Aug. 01, 2015
Aug. 02, 2014
Aug. 01, 2015
Aug. 02, 2014
Earnings Per Share [Abstract]        
Employee stock options and restricted stock excluded from the computation of net income per common share 119 621 185 743