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WARRANTY RESERVES (Details) - SEC Schedule, 12-09, Reserve, Warranty [Member] - USD ($)
$ in Thousands
9 Months Ended
Jun. 26, 2020
Jun. 28, 2019
Warranty Reserve    
Reserve, beginning of period $ 165 $ 173
Provision 4 65
Warranty costs (38) (89)
Reserve, end of period $ 131 $ 149