Supporting Financial Information - Interest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interest expense	$ 15,352	$ 14,153
Interest income	(38)	(64)
Amortization of deferred financing costs	1,839	2,182
Interest expense	$ 17,153	$ 16,271