LEASES - Maturities of operating and finance lease (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Sep. 30, 2020
Maturities of operating lease liabilities
2021 (remainder of fiscal year)	$ 522
2022	1,069
2023	1,113
2024	1,231
2025	393
Thereafter	494
Total minimum future lease payments	4,822
Less interest	(540)
Total operating lease liabilities	4,282	$ 4,210
Maturities of finance lease liabilities
2021 (remainder of fiscal year)	4,777
2022	22
2023	16
2024	16
2025	5
Total minimum future lease payments	4,836
Less interest	(130)
Total finance lease liabilities	$ 4,706	$ 4,772