Leases - Supplemental Cash Flow Information and Non-Cash Activity Schedule (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash paid for amounts included in measurement of liabilities:
Operating cash flows from operating leases	$ 1,693	$ 1,952
Operating cash flows from finance leases	3	2
Financing cash flows from finance leases	53	59
Right-of-use assets obtained in exchange for new lease liabilities:
Finance leases	206	0
Operating leases	$ 236	$ 43