Operating Leases - Lease Expense and Cash Payments & Weighted-Average Remaining Lease Term and Discount Rate (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease expense	$ 1,081	$ 1,001
Cash payments on lease liabilities	$ 973	$ 1,141
Weighted-average remaining lease term	6 years 10 months 24 days	4 years 3 months 18 days
Weighted-average discount rate	6.03%	4.41%