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LEASES AND OTHER COMMITMENTS (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 27, 2019
Sep. 28, 2018
Sep. 29, 2017
Operating Leased Assets [Line Items]      
Rental expense $ 9,352 $ 8,316 $ 7,969
Related Parties      
Operating Leased Assets [Line Items]      
Rental expense $ 998 $ 992 $ 949