Leases - Supplemental Cash Flow Information and Non-Cash Activity Schedule (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash paid for amounts included in measurement of liabilities:
Operating cash flows from operating leases	$ 1,285	$ 1,525
Operating cash flows from finance leases	1	2
Financing cash flows from finance leases	18	44
Right-of-use assets obtained in exchange for new lease liabilities:
Operating leases	$ 0	$ 43