Leases - Supplemental Cash Flow Information and Non-Cash Activity Schedule (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash paid for amounts included in measurement of liabilities:
Operating cash flows from operating leases	$ 834	$ 1,097
Operating cash flows from finance leases	0	2
Financing cash flows from finance leases	15	29
Right-of-use assets obtained in exchange for new lease liabilities:
Operating leases	$ 0	$ 43