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Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Aug. 31, 2025 | Aug. 31, 2024
Commitments And Contingencies [Line Items] |  |
Liabilities | $ 307,986 | $ 279,339
Lindsay, Nebraska Facility [Member] |  |
Commitments And Contingencies [Line Items] |  |
Current environmental remediation accrual | 10,600 |
Liabilities | $ 8,000 | $ 8,000
Liabilities discounted risk Free interest rate | 1.20% | 1.20%
Discounted portion of liabilities | $ 9,100 | $ 9,100

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