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LEASES - Lease Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 03, 2021
Mar. 28, 2020
Apr. 03, 2021
Mar. 28, 2020
Lease, Cost [Abstract]        
Operating lease expense $ 1,932 $ 1,668 $ 3,799 $ 3,384
Cash Flow, Operating Activities, Lessee [Abstract]        
Operating cash outflows from operating leases     $ 3,558 $ 3,131