LEASES - Additional information related to leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 1,819	$ 1,601
Operating cash flows from finance leases	223	236
Financing cash flows from finance leases	$ 355	327
Right-of-use assets obtained in exchange for operating lease liabilities
Operating leases		$ 13,964
Weighted-average remaining lease term:
Operating leases	11 years 1 month 6 days	11 years 7 months 6 days
Finance leases	11 years 1 month 6 days	11 years 8 months 12 days
Weighted-average discount rate:
Operating leases	4.50%	4.40%
Finance leases	4.70%	4.60%