Annual report pursuant to section 13 and 15(d)

Preferred Stock and Share-Based Compensation Plans (Details Textual)

v2.4.0.6
Preferred Stock and Share-Based Compensation Plans (Details Textual) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Jan. 28, 2012
Y
Jan. 29, 2011
Jan. 30, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options granted during the year 138,250    
Share Based Compensation Plans (Textual) [Abstract]      
Preferred stock, shares authorized 2,000,000 2,000,000  
Preferred stock, shares, issued        
Number of shares reserved for future issuance 4,507,474    
2004 Plan [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum number of common stock shares available for purchase in the plan 4,610,059    
Award plan issuance expiration 2014-03-29    
Number of shares available for grant 2,534,222    
1996 Plan [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award plan issuance expiration April 2011    
1998 Plan [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award plan issuance expiration February 2008    
Director Plan [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award plan issuance expiration 2012-02-23    
Stock Options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period, minimum One Year    
Vesting period, maximum Ten Year    
Stock options granted during the year 138,250 50,000 140,322
Weighted average grant date fair value of grants $ 11.65 $ 8.27 $ 7.22
Intrinsic value of option exercised $ 5.6 $ 1.3 $ 1.5
Unrecognized compensation expense 4.8    
Weighted average period for recognition of compensation expense 2.4    
Nonvested Shares [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period, minimum One Year    
Vesting period, maximum Three Year    
Certain grants vesting period, maximum 10 years    
Unrecognized compensation expense 9.1    
Weighted average period for recognition of compensation expense 1.6    
Restricted Stock Award [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted average grant date fair value of grants $ 28.45 $ 23.47 $ 20.15
Nonvested Shares, Granted 119,081 29,825 29,778
Intrinsic value of nonvested shares 4.1    
Total fair value of shares vested 1.3 1.2 1.4
ESDP [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum number of common stock shares available for purchase in the plan 2,137,500    
Share Based Compensation Plans (Textual) [Abstract]      
Number of shares reserved for future issuance 953,102    
Restricted Stock Units (RSUs) [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted average grant date fair value of grants $ 28.65 $ 24.08 $ 17.92
Shares relinquished for tax payments 108,457    
Nonvested Shares, Granted 470,999 314,920 275,905
Intrinsic value of nonvested shares 18.6    
Total fair value of shares vested $ 8.2 $ 6.6 $ 7.3