Supporting Financial Information - Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interest expense	$ 3,821	$ 4,160	$ 7,831	$ 5,714
Interest income	(28)
Interest income		0	(23)	0
Amortization of deferred financing costs	397	605	1,040	881
Interest expense	$ 4,190	$ 4,765	$ 8,848	$ 6,595