Supporting Financial Information - Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interest expense	$ 3,486	$ 3,821	$ 7,172	$ 7,831
Interest income	(33)		(42)	(23)
Interest income		(28)
Amortization of deferred financing costs	424	397	880	1,040
Interest expense	$ 3,877	$ 4,190	$ 8,010	$ 8,848