Leases - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Finance lease cost:
Amortization of right of use asset	$ 430	$ 430
Interest on lease liabilities	784	806
Total finance lease cost	1,214	1,236
Operating lease costs:
Operating lease cost	1,100	1,687
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flow from finance leases	784	806
Operating cash flow from operating leases	1,100	1,687
Financing cash flows from finance leases	228	195
Total cash paid for amount included in measurement of lease liabilities	$ 2,112	$ 2,688