Leases - Summary of Maturities of Lease Liabilities (Detail) $ in Thousands	Sep. 30, 2020 USD ($)
Lessee Disclosure [Abstract]
Operating Leases 2021	$ 134
Operating Leases 2022	162
Operating Leases 2023	84
Operating Leases Total lease payments	380
Operating Leases Less: Imputed interest	(23)
Operating Leases Total	357
Finance Leases 2021	1
Finance Leases 2022	1
Finance Leases 2023	1
Finance Leases 2024	1
Finance Leases 2025	1
Finance Leases Total lease payments	5
Finance Leases Less: Imputed interest	(1)
Finance Leases Total	$ 4