9. LEASES - Lease Costs (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Leases [Abstract]
Operating lease cost	[1]	$ 47	$ 79	$ 93	$ 159
Finance lease cost:
Depreciation expense of financed assets		41	39	82	119
Interest on lease obligations		$ 1	$ 4	$ 3	$ 10

[1] Included in general and administrative expenses