Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash Flow, Operating Activities, Lessee [Abstract]
Operating cash flows from operating leases	$ 10,949	$ 7,977
Operating cash flows from finance leases	40	5
Financing cash flows from finance leases	$ 578	$ 393