Leases - Supplemental Cash Flow Information and Non-Cash Activity Schedule (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash paid for amounts included in measurement of liabilities:
Operating cash flows from operating leases	$ 551	$ 537
Operating cash flows from finance leases	1	2
Financing cash flows from finance leases	14	14
Right-of-use assets obtained in exchange for new lease liabilities:
Operating leases	$ 0	$ 0