Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Cash Flow, Operating Activities, Lessee [Abstract]
Operating cash flows from operating leases	$ 2,947	$ 2,116	$ 7,895	$ 5,715
Operating cash flows from finance leases	12		26	4
Financing cash flows from finance leases	$ 169	$ 43	$ 377	$ 360