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Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands | 9 Months Ended |  |
--- | --- | --- | ---
May 31, 2024 | Aug. 31, 2023 | May 31, 2023
Commitments And Contingencies [Line Items] |  |  |
Liabilities | $ 278,105 | $ 290,009 | $ 286,822
Lindsay, Nebraska Facility [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Current environmental remediation accrual | 10,600 |  |
Liabilities | $ 8,000 |  |
Liabilities discounted risk Free interest rate | 1.20% |  |
Discounted portion of liabilities | $ 9,000 |  |

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