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Note 5 Fair Value (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 28, 2020
Oct. 03, 2020
Sep. 28, 2019
Sep. 29, 2018
Derivative [Line Items]        
Impairment of Long-Lived Assets to be Disposed of $ 2,000      
Goodwill impairment $ 7,000 $ 6,609 $ 0 $ 30,610
Maximum        
Derivative [Line Items]        
Cash Equivalents   10.00%