8. LEASES - Lease costs (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Leases [Abstract]
Operating lease cost (1)	[1]	$ 62	$ 194	$ 221	$ 250
Finance lease cost:
Depreciation expense financed assets		37	94	156	284
Interest on lease obligations		$ 20	$ 9	$ 30	$ 30

[1] Included in general and administrative expenses