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WARRANTY RESERVES (Details) - SEC Schedule, 12-09, Reserve, Warranty [Member] - USD ($)
$ in Thousands
3 Months Ended
Jan. 01, 2021
Dec. 27, 2019
Warranty Reserve    
Reserve, beginning of period $ 100 $ 165
Provision 38 13
Warranty costs (12) (23)
Reserve, end of period $ 126 $ 155