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INVENTORIES (Details) - USD ($)
$ in Thousands
Dec. 27, 2019
Sep. 27, 2019
Dec. 28, 2018
Inventory Disclosure [Abstract]      
Raw materials $ 47,208 $ 45,168 $ 54,527
Work in process 463 152 328
Finished goods 56,214 48,978 61,423
Inventories $ 103,885 $ 94,298 $ 116,278