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Acquisitions and Divestitures (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Nov. 28, 2019
Dec. 28, 2019
Dec. 29, 2018
Mar. 28, 2020
Mar. 30, 2019
Acquisitions and Divestitures          
Net cash paid to acquire a business       $ 54,265 $ 0
Industrial Systems          
Acquisitions and Divestitures          
Proceeds from Divestiture of Businesses   $ 1,775 $ 4,191    
Industrial Systems | Other Income          
Acquisitions and Divestitures          
Gain on Divestiture   $ 169 $ 2,641    
GAT Inc. | Industrial Systems          
Acquisitions and Divestitures          
Net cash paid to acquire a business $ 54,265