Commitments and Contingencies (Summary of Undiscounted Environmental Remediation Liability Classifications) (Details) - USD ($) $ in Thousands	Feb. 28, 2025	Aug. 31, 2024	Feb. 29, 2024
Commitments and Contingencies Disclosure [Abstract]
Other current liabilities	$ 509	$ 462	$ 460
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current	Other Liabilities, Current
Other noncurrent liabilities	$ 10,123	$ 10,167	$ 10,172
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Total environmental remediation liabilities	$ 10,632	$ 10,629	$ 10,632