Leases - Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating	$ 873	$ 947
Short-term	50	43
Variable	37	31
Sublease income	(67)	(71)
Total lease costs	$ 893	$ 950