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Share-Based Compensation (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Oct. 28, 2017
Oct. 29, 2016
Oct. 28, 2017
Oct. 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated Share-based Compensation Expense $ 2.6 $ 1.6 $ 8.4 $ 6.0
Shares of common stock (repurchased) issued during the period 9,832 (22,233) 251,718 158,592
Performance Share Plan Cash Based Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated Share-based Compensation Expense $ 0.0 $ 0.4 $ 0.1 $ 1.9
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares granted     381,312  
Weighted-average grant date fair value of grants $ 27.13 $ 25.18 $ 26.92 $ 26.54
Performance share units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares granted     169,500 159,000
Weighted-average grant date fair value of grants     $ 26.90 $ 26.64
Employee Stock Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of stock options granted 0 0 0 0
Restricted Stock Units for Non-Employee Directors [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares granted     47,550 55,250
Restricted stock unit dividend equivalent 838 1,086 2,630 3,050
Weighted-average grant date fair value of grants $ 30.68 $ 24.98 $ 27.86 $ 21.78
One year cliff-vesting period | Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares granted     4,492  
Four year graded-vesting period | Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares granted     12,000  
Four year cliff-vesting period | Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares granted 25,000 6,500 364,820 357,100
Minimum [Member] | Performance share units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Pay out percentage     0.00%  
Maximum [Member] | Performance share units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Pay out percentage     200.00%