Long-Term Debt and Lines of Credit - Schedule of interest costs expensed and capitalized (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Debt Disclosure [Abstract]
Interest expense	$ 4,848	$ 3,538
Interest capitalized	406	1,260
Total	$ 5,254	$ 4,798