Leases - Schedule of Cash Flow, Supplemental Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from right-of-use leases	$ 1,160	$ 1,586
Operating cash flows from finance leases	75	59
Payments on financing lease obligations	$ 484	$ 388