Income Taxes - Provision (benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Current:
Federal	$ 4,912	$ 16,922	$ 8,553
State	3,350	5,954	3,121
Deferred:
Federal	2,248	(940)	1,176
State	809	(168)	383
Total	$ 11,319	$ 21,768	$ 13,233