Long-Term Debt and Lines of Credit - Schedule of Interest Costs Expensed and Capitalized (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Debt Disclosure [Abstract]
Interest expense	$ 907	$ 1,603	$ 3,185	$ 4,599
Interest capitalized	389	320	1,050	892
Total	$ 1,296	$ 1,923	$ 4,235	$ 5,491