LEASES - Weighted average remaining lease (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019
Cash flows included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 74	$ 212
Operating cash flows from finance leases	40	115
Finance cash flows from finance leases	51	130	$ 0
Non-cash lease activity:
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 0	$ 448
Operating lease, weighted-average remaining lease term (in years)	4 years 11 months 12 days	4 years 11 months 12 days
Finance lease, weighted-average remaining lease term (in years)	1 month 21 days	1 month 21 days
Operating lease, weighted-average discount rate (in percentages)	5.22%	5.22%
Finance lease, weighted-average discount rate (in percentages)	5.89%	5.89%