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Stockholders' Equity (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Oct. 04, 2020
Jul. 05, 2020
Apr. 05, 2020
Dec. 29, 2019
Sep. 29, 2019
Jun. 30, 2019
Jul. 05, 2020
Jul. 31, 2020
Jul. 23, 2018
Schedule of Shareholders' Equity [Line Items]                  
Stock Repurchase Program, Remaining Authorized Repurchase Amount   $ 197.8         $ 197.8    
Repurchased Common Shares For Activity Pursuant to Equity Incentive Plans   3,574         69,934    
Aggregate Cost of Repurchased Common Shares for Activity Pursuant to Equity Incentive Plans   $ 0.3         $ 6.7    
Cash dividends (per share)   $ 0.07 $ 0.07 $ 0.07 $ 0.07 $ 0.07 $ 0.07    
Dividends Payable, Amount   $ 7.8         $ 7.8    
Dividends Payable, Date Declared   Apr. 30, 2020              
Repurchase Program, 07/23/2018 [Member]                  
Schedule of Shareholders' Equity [Line Items]                  
Stock Repurchase Program, Authorized Amount                 $ 250.0
Subsequent Event [Member]                  
Schedule of Shareholders' Equity [Line Items]                  
Cash dividends (per share) $ 0.07                
Dividends Payable, Date Declared Jul. 23, 2020                
Subsequent Event [Member] | Repurchase Program, 07/31/2020 [Member]                  
Schedule of Shareholders' Equity [Line Items]                  
Stock Repurchase Program, Authorized Amount               $ 250.0