LEASES - Supplemental cash flow information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
Cash flows included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 2,205	$ 4,927
Operating cash flows from finance leases	5	18
Finance cash flows from finance leases	1	2
Non-cash lease activity:
Right-of-use assets obtained in exchange for new operating lease liabilities	7,658	25,747
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 0	$ 9