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LEASES - LEASE COST (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Leases [Abstract]    
Operating lease cost $ 9,702 $ 8,182
Amortization of right-of-use assets 1,769 3,442
Interest on lease liabilities 612 710
Total finance lease cost 2,381 4,152
Short-term lease cost 34 543
Variable lease cost 781 1,381
Total lease cost $ 12,898 $ 14,258