Leases - Summary of Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Leases [Abstract]
Right-of-use operating lease costs	$ 68	$ 73	$ 136	$ 111
Short-term lease costs	52	66	96	140
Total	$ 120	$ 139	$ 232	$ 251