XML 30 R34.htm IDEA: XBRL DOCUMENT v2.4.0.8
Net Income Per Common Share - Additional Information (Detail)
3 Months Ended 6 Months Ended
Aug. 03, 2013
Jul. 28, 2012
Aug. 03, 2013
Jul. 28, 2012
Equity [Abstract]        
Anti-dilutive option 173,300 605,844 173,300 605,844