LEASES - Components of lease costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Leases
Option to extend			true
Finance lease cost
Amortization of right-of-use assets	$ 393	$ 393	$ 786	$ 826
Interest on lease liabilities	233	245	469	511
Operating lease cost	1,853	1,578	3,498	3,131
Total lease costs	$ 2,479	$ 2,216	$ 4,753	$ 4,468
Maximum
Leases
Lease term	20 years		20 years