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ACCOUNTS RECEIVABLE (Details) - USD ($)
$ in Thousands
Mar. 27, 2020
Sep. 27, 2019
Mar. 29, 2019
Receivables [Abstract]      
Allowances for doubtful accounts receivable $ 1,279 $ 2,550 $ 1,266
Accounts receivable, net $ 106,629 $ 44,508 $ 124,750