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Net Income Per Common Share (Details Textual)
3 Months Ended 9 Months Ended
Oct. 27, 2012
Oct. 29, 2011
Oct. 27, 2012
Oct. 29, 2011
Net Income Per Common Share (Textual) [Abstract]        
Anti-dilutive option 595,394 679,890 654,194 664,690