LEASES - LEASE COST (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease cost	$ 2,119	$ 2,089
Amortization of right-of-use assets	396	1,246
Interest on lease liabilities	80	221
Total finance lease cost	476	1,467
Short-term lease cost	11	127
Variable lease cost	191	153
Total lease cost	$ 2,797	$ 3,836