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DEBT (Summary of Changes in Long-Term Debt) (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
May 31, 2017 | May 31, 2016 | Aug. 31, 2016
Debt Instrument [Line Items] |  |  |  |
Current portion of long-term debt |  | $ 14,565 |  |
Long-term debt (net of current portion) |  | 73,542 |  |
Total | [1] | 88,107 |  |
Proceeds from long-term debt total |  | 47,700 | $ 7,370 |
Regularly scheduled loan payments, Current |  | (225) |  |
Regularly scheduled loan payments, Noncurrent |  | (10,784) |  |
Regularly scheduled loan payments total |  | (11,009) |  |
Translation adjustments on foreign-currency debt of subsidiaries whose functional currency is not the U.S. dollar, Current | [2] | 36 |  |
Translation adjustments on foreign-currency debt of subsidiaries whose functional currency is not the U.S. dollar, Noncurrent | [2] | (120) |  |
Translation adjustments on foreign-currency debt of subsidiaries whose functional currency is not the U.S. dollar | [2] | (84) |  |
Current portion of long-term debt |  | 20,376 |  |
Long-term debt (net of current portion) |  | 104,338 |  |
Total | [3] | 124,714 |  |
Cash Asset [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Collateral amount |  | 0 |  | $ 0
NonCash Asset [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Collateral amount |  | 124,100 |  | $ 102,400
Union Bank [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from long-term debt incurred during the period, Noncurrent |  | 35,700 |  |
Proceeds from long-term debt total |  | 35,700 |  |
Trinidad [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from long-term debt incurred during the period, Current |  | 6,000 |  |
Proceeds from long-term debt incurred during the period, Noncurrent |  | 6,000 |  |
Proceeds from long-term debt total |  | $ 12,000 |  |
[1] | The carrying amount of non-cash assets assigned as collateral for these loans was $102.4 million. No cash assets were assigned as collateral for these loans.
[2] | These foreign currency translation adjustments are recorded within Other comprehensive income.
[3] | The carrying amount of non-cash assets assigned as collateral for these loans was $124.1 million. No cash assets were assigned as collateral for these loans.

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