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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Shipping And Handling Costs) (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 27, 2019
Sep. 28, 2018
Sep. 29, 2017
Disaggregation of Revenue [Line Items]      
Cost of sales $ 312,663 $ 302,408 $ 279,625
Shipping and Handling      
Disaggregation of Revenue [Line Items]      
Cost of sales $ 12,409 $ 11,846 $ 10,844