LEASES - SUPPLEMENTAL LEASE INFORMATION (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating cash flows from operating leases	$ 133	$ 189
Operating lease, weighted average remaining lease term (in years)	2 years 10 months 24 days	3 years 4 months 24 days
Operating lease, weighted average discount rate	5.19%	5.85%