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DEBT (Summary of Changes in Long-Term Debt) (Details) - USD ($) | 9 Months Ended |
--- | --- | ---
May 31, 2021 | May 31, 2020 | Aug. 31, 2020
Debt Instrument [Line Items] |  |  |  |
Current portion of long-term debt |  | $ 19,437,000 |  |
Long-term debt (net of current portion) |  | 112,610,000 |  |
Total | [1] | 132,047,000 |  |
Proceeds from long-term debt incurred during the period, |  | 3,000,000 | $ 57,820,000 |
Regularly scheduled loan payments, Current portion of long-term debt |  | (1,164,000) |  |
Regularly scheduled loan payments, Long-term debt (net of current portion) |  | (11,971,000) |  |
Regularly scheduled loan payments total |  | (13,135,000) |  |
Reclassification of long-term debt due in the next 12 months, Current portion of long-term debt |  | 1,706,000 |  |
Reclassification of long-term debt due in the next 12 months, Long-term debt (net of current portion) |  | (1,706,000) |  |
Reclassification of long-term debt due in the next 12 months total |  |  |  |
Translation adjustments on foreign currency debt of subsidiaries whose functional currency is not the U.S. dollar, Current portion of long-term debt | [2] | 28,000 |  |
Translation adjustments on foreign currency debt of subsidiaries whose functional currency is not the U.S. dollar, Long-term debt (net of current portion) | [2] | (92,000) |  |
Translation adjustments on foreign currency debt of subsidiaries whose functional currency is not the U.S. dollar total | [2] | (64,000) |  |
Current portion of long-term debt |  | 20,554,000 |  |
Long-term debt (net of current portion) |  | 101,294,000 |  |
Total | [3] | 121,848,000 |  |
Cash Asset [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Collateral amount |  | 2,800,000 |  | $ 0
NonCash Asset [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Collateral amount |  | 143,700,000 |  | $ 158,600,000
Trinidad [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from long-term debt incurred during the period, Current portion of long-term debt |  | 547,000 |  |
Proceeds from long-term debt incurred during the period, Long-term debt (net of current portion) |  | 2,453,000 |  |
Proceeds from long-term debt incurred during the period, |  | $ 3,000,000 |  |
[1] | The carrying amount of non-cash assets assigned as collateral for these loans was $158.6 million. No cash assets were assigned as collateral for these loans.
[2] | These foreign currency translation adjustments are recorded within Other comprehensive loss.
[3] | The carrying amount of cash and non-cash assets assigned as collateral for these loans was $2.8 million and $143.7 million, respectively.

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