Annual report pursuant to Section 13 and 15(d)

Repurchase of Common Stock (Shares Repurchased) (Details)

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Repurchase of Common Stock (Shares Repurchased) (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 12 Months Ended 75 Months Ended
Sep. 29, 2018
Sep. 01, 2018
Aug. 04, 2018
Sep. 29, 2018
Sep. 29, 2018
Sep. 30, 2017
Oct. 01, 2016
Sep. 29, 2018
Equity, Class of Treasury Stock [Line Items]                
Total Number of Shares Purchased         463,974 413,337 140,336 3,357,461
Dollar Value of Shares that May Yet Be Purchased Under the Plans $ 12.3     $ 12.3 $ 12.3     $ 12.3
Common Stock                
Equity, Class of Treasury Stock [Line Items]                
Total Number of Shares Purchased 43,459 124,232 12,925 180,616        
Average Price Paid per Share $ 18.31 $ 18.48 $ 18.20 $ 18.42        
Dollar Value of Shares that May Yet Be Purchased Under the Plans $ 12.3 $ 3.1 $ 5.4 $ 12.3 $ 12.3     $ 12.3
Common Stock | Publicly Announced Plan                
Equity, Class of Treasury Stock [Line Items]                
Total Number of Shares Purchased 43,459 124,332 12,925 180,716