LEASES - Components of lease expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating lease costs:
Fixed operating lease costs	$ 1,083	$ 229
Short-term lease costs	25	10
Variable lease costs		2
Lease income	(177)	(160)
Finance lease costs:
Amortization of right-of-use asset expense	6	37
Interest on finance lease liability	1	69
Total lease cost	$ 938	$ 187