Leases - Summary of Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Right-of-use operating lease costs	$ 73	$ 38	$ 111	$ 75
Short-term lease costs	66	75	140	151
Total	$ 139	$ 113	$ 251	$ 226