Long-Term Debt and Lines of Credit - Schedule of interest costs expensed and capitalized (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Debt Disclosure [Abstract]
Interest expense	$ 3,538	$ 4,911
Interest capitalized	1,260	1,439
Total	$ 4,798	$ 6,350