Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Cash Flow, Operating Activities, Lessee [Abstract]
Operating cash flows from operating leases	$ 1,950	$ 1,548	$ 3,599	$ 2,968
Operating cash flows from finance leases	1	12	4	27
Financing cash flows from finance leases	$ 127	$ 307	$ 312	$ 611