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Stock-Based Compensation (Details) (USD $)
3 Months Ended 9 Months Ended
Oct. 29, 2011
Oct. 30, 2010
Oct. 29, 2011
Oct. 30, 2010
Stock-based compensation expense by type [Abstract]        
Stock options $ 19,000 $ 18,000 $ 442,000 $ 638,000
Restricted stock awards 1,594,000 1,219,000 4,214,000 3,000,000
Employee stock purchase 19,000 18,000 60,000 58,000
Director deferred compensation 15,000 0 45,000 0
Total stock-based compensation expense 1,647,000 1,255,000 4,761,000 3,696,000
Income tax benefit recognized 604,000 463,000 1,747,000 1,291,000
Stock-based compensation expense, net of income tax 1,043,000 792,000 3,014,000 2,405,000
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares of common stock purchased during the period under the employee stock purchase plan (in shares) 2,472   7,550  
Weighted-average grant date fair value of stock options granted (in dollars per share) $ 13.86   $ 12.81  
Grant date fair value of shares purchased through the employee stock purchase plan (in dollars per share) $ 8.95   $ 8.23  
Purchase price paid for stock purchased through the employee stock purchase plan (in dollars per share) $ 28.81   $ 29.97  
Total compensation costs related to nonvested restricted stock unit awards not yet recognized $ 9,200,000   $ 9,200,000  
Weighted-average period over which nonvested restricted stock unit awards are expected to be recognized (in years)     2.51  
Stock Options [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options granted 1,341   34,551  
Restricted Stock Units [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares Awarded 1,000   103,143  
Performance-based Restricted Stock Units [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares Awarded 0   53,000  
Deferred Stock Units [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares Awarded 442   1,229