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Stock-Based Compensation (Details Textuals) (USD $)
1 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Apr. 27, 2012
Jan. 28, 2011
Jul. 28, 2012
Jul. 28, 2012
Restricted Stock
Jul. 28, 2012
Restricted Stock
Jul. 30, 2011
Restricted Stock
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]            
Stock split resultant shares three-for-two          
Reduced share based compensation expense   $ 716,000        
Cumulative share based compensation expense     789,000      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Weighted-average grant date fair value of stock awards granted         $ 17.73 $ 17.08
Total fair value at grant date of non-vested stock awards, vested         40,000 5,800,000
Number of shares of awards expired       22,539    
Unrecognized compensation expense     $ 5,000,000 $ 5,000,000 $ 5,000,000  
Cost expected to recognized over a weighted-average period     1 year 3 months 18 days