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Debt - Schedule of debt (Details) - USD ($)
$ in Thousands
6 Months Ended
Apr. 03, 2021
Oct. 03, 2020
Debt Disclosure [Abstract]    
Debt, interest rate   2.40%
Debt   $ 25,000
Unamortized debt issuance costs   (82)
Total indebtedness   24,918
Less short-term portion   (6,667)
Long-term debt $ 0 $ 18,251
LIBOR | Term Loan    
Debt Instrument [Line Items]    
Interest rate, spread on variable rate 2.25%