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Share-Based Compensation (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jul. 29, 2017
Jul. 30, 2016
Jul. 29, 2017
Jul. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated Share-based Compensation Expense $ 3.1 $ 2.3 $ 5.8 $ 4.3
Shares of common stock (repurchased) issued during the period (12,472) (5,947) 241,886 180,825
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 $ 0.9 $ 0.1 $ 1.5
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares granted     356,312  
Weighted-average grant date fair value of grants $ 27.83 $ 24.85 $ 26.91 $ 26.57
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 45,830 53,310 46,712 54,163
Restricted stock unit dividend equivalent 910 1,110 1,792 1,963
Weighted-average grant date fair value of grants $ 27.84 $ 21.62 $ 27.81 $ 21.72
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   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   13,800 339,820 350,600
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%