LEASES - Additional information related to leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 1,779	$ 1,512	$ 3,380	$ 3,008
Operating cash flows from finance leases	233	245	469	511
Financing cash flows from finance leases	330	304	658	665
Right-of-use assets obtained in exchange for operating lease liabilities
Operating leases	$ 618	$ 346	$ 14,582	$ 1,247
Weighted-average remaining lease term:
Operating leases	11 years 6 months	9 years 10 months 24 days	11 years 6 months	9 years 10 months 24 days
Finance leases	11 years 6 months	12 years 3 months 18 days	11 years 6 months	12 years 3 months 18 days
Weighted-average discount rate:
Operating leases	4.40%	3.12%	4.40%	3.12%
Finance leases	4.61%	4.58%	4.61%	4.58%