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Earnings Per Share (Details)
3 Months Ended 9 Months Ended
Oct. 27, 2012
Oct. 29, 2011
Oct. 27, 2012
Oct. 29, 2011
Earnings Per Share(Textual) [Abstract]        
Number of antidilutive shares not included in computation of diluted earnings per share 1,700,000 955,000 1,700,000 545,000