Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
May 31, 2023	Aug. 31, 2022	May 31, 2022
Commitments And Contingencies [Line Items]
Liabilities	$ 286,822	$ 317,295	$ 331,146
Lindsay, Nebraska Facility [Member]
Commitments And Contingencies [Line Items]
Current environmental remediation accrual	13,100
Liabilities	$ 8,700
Liabilities discounted risk Free interest rate	1.20%
Discounted portion of liabilities	$ 9,800

Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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+ Details