Credit Arrangements (Schedule of Principal Payments Due on Long-Term Debt) (Details) - USD ($) $ in Thousands	Aug. 31, 2021	Aug. 31, 2020
Debt Disclosure [Abstract]
1 year	$ 217
2 years	221
3 years	226
4 years	230
5 years	235
Thereafter	115,019
Total debt	$ 116,148	$ 116,344

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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