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WARRANTY RESERVES (Details) - SEC Schedule, 12-09, Reserve, Warranty [Member] - USD ($)
$ in Thousands
3 Months Ended
Dec. 27, 2019
Dec. 28, 2018
Warranty Reserve    
Reserve, beginning of period $ 165 $ 173
Provision 13 34
Warranty costs (23) (32)
Reserve, end of period $ 155 $ 175