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COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 28, 2019
Sep. 29, 2018
Commitments and Contingencies Disclosure [Abstract]    
Lease expiration year 2033  
Security deposit liability $ 388  
Rent expense 13,879 $ 14,649
Contingent rentals, rent expense $ 5,336 $ 5,454