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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Advertising & Promotions) (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 27, 2019
Sep. 28, 2018
Sep. 29, 2017
Accounting Policies [Abstract]      
Advertising and promotions expense $ 28,397 $ 26,319 $ 24,349
Capitalized advertising costs $ 466 $ 606