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Accounts Receivable (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Sep. 24, 2016
Receivables [Abstract]    
Trade receivables $ 25,527 $ 16,698
Less: long term receivable recorded in other assets (3,235)
Other receivables 135 88
Allowance for doubtful accounts (1,958) (340)
Total accounts receivable, net $ 20,469 $ 16,446