LEASES - Supplemental cash flow information (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 8,277	$ 8,906
Operating cash flows from finance leases	218	68
Financing cash flows from finance leases	235	15
Non-cash lease activity:
ROU assets obtained in exchange for new operating lease liabilities	3,205	12,858
ROU assets obtained in exchange for new finance lease liabilities	$ 2,294	$ 191