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Income Taxes - Schedule of Valuation Allowance Rollforward (Details) - USD ($)
$ in Thousands
12 Months Ended
Oct. 02, 2020
Sep. 27, 2019
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]    
Balance, beginning of year $ (17,532) $ (29,023)
Additions (21,445) (2,330)
Subtractions 0 13,821
Balance, end of year $ (38,977) $ (17,532)