Goodwill and Other Intangible Assets - Definite-lived intangible assets (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Licenses	$ 28,886	$ 27,725
Software	2,354	2,355
Leases acquired in-place	826	826
Discounted leases	432	297
Non-compete agreements	1,100	1,100
Distribution agreements	317	317
Total definite-lived intangibles	33,915	32,620
Less accumulated amortization and impairment	(15,131)	(12,769)
Definite-lived intangibles, net	$ 18,784	$ 19,851	$ 23,599