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Debt (Schedule Of Short-term And Long-term Borrowings) (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
May 31, 2022 | Aug. 31, 2021
Debt Instrument [Line Items] |  |  |
Total Borrowings |  | $ 126,566 | $ 115,740
Short-term portion of borrowings |  | (16,377) | (800)
Long-term borrowings |  | $ 110,189 | 114,940
Series A Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Issuance | [1] | Nov. 15, 2017 |
Maturity date |  | Nov. 15, 2032 |
Interest rate |  | 3.39% |
Total Borrowings | [1] | $ 16,400 | 17,200
Short term portion of long-term debt |  | $ 800 |
Principal payment frequency of periodic payment |  | semi-annually |
Periodic payment amount |  | $ 400 |
Periodic principal maturity |  | May 15, 2032 |
Remaining principal payment |  | $ 8,400 |
Series B Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Issuance | [2] | Sep. 30, 2020 |
Maturity date | [2] | Nov. 15, 2027 |
Interest rate |  | 2.50% |
Total Borrowings | [2] | $ 26,000 | 26,000
Series C Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Issuance | [2] | Sep. 30, 2020 |
Maturity date | [2] | Nov. 15, 2030 |
Interest rate |  | 2.69% |
Total Borrowings | [2] | $ 26,000 | 26,000
Series B and Series C Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Principal payment frequency of periodic payment |  | semi-annually |
Credit Agreement - Revolving Credit Facility [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Maturity date | [3] | Sep. 30, 2025 |
Total Borrowings | [3] | $ 58,166 | $ 46,540
Long-term borrowings |  | 42,600 |
Short term portion of long-term debt |  | $ 15,600 |
Minimum [Member] | Series A Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Maturity year | [1] | 2021 |
Maximum [Member] | Series A Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Maturity year | [1] | -2032 |
[1] | Principal payments are required semi-annually in May and November of each year in equal installments of $0.4 million through May 15, 2032, resulting in $0.8 million classified as short-term. The remaining outstanding principal in the amount of $8.4 million will become due on November 15, 2032.
[2] | Interest on notes is payable semi-annually in May and November of each year with no principal due until the maturity date.
[3] | The Company has the ability to refinance any draw under the line of credit with successive short-term borrowings through the maturity date. Outstanding draws for which management has the ability and intent to refinance with successive short-term borrowings for a period of at least twelve months are classified as long-term. As of May 31, 2022, $42.6 million on this facility is classified as long-term and is denominated in Euros and Pound Sterling, whereas $15.6 million is classified as short-term and is denominated in U.S. Dollar. Euro and Pound Sterling denominated draws will fluctuate in U.S. Dollars from period to period due to changes in foreign currency exchange rates.

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