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DEBT (Summary of Changes in Long-Term Debt) (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Feb. 28, 2018 | Feb. 28, 2017 | Aug. 31, 2017
Debt Instrument [Line Items] |  |  |  |
Current portion of long-term debt |  | $ 18,358 |  |
Long-term debt (net of current portion) |  | 87,939 |  |
Total | [1] | 106,297 |  |
Proceeds from long-term debt total |  | 13,500 | $ 35,700 |
Regularly scheduled loan payments, Current |  | (1,731) |  |
Regularly scheduled loan payments, Noncurrent |  | (7,556) |  |
Regularly scheduled loan payments total |  | (9,287) |  |
Translation adjustments on foreign-currency debt of subsidiaries whose functional currency is not the U.S. dollar, Current | [2] | 133 |  |
Translation adjustments on foreign-currency debt of subsidiaries whose functional currency is not the U.S. dollar, Noncurrent | [2] | (108) |  |
Translation adjustments on foreign-currency debt of subsidiaries whose functional currency is not the U.S. dollar total | [2] | 25 |  |
Current portion of long-term debt |  | 14,160 |  |
Long-term debt (net of current portion) |  | 82,512 |  |
Total | [3] | 96,672 |  |
Honduras Subsidiary [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from long-term debt incurred during the period, Current |  | 1,350 |  |
Proceeds from long-term debt incurred during the period, Noncurrent |  | 12,150 |  |
Proceeds from long-term debt total |  | 13,500 |  |
Trinidad Subsidiary [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Repayments of long-term debt, Current |  | (1,500) |  |
Repayments of long-term debt, Noncurrent |  | (3,000) |  |
Repayments of long-term debt total |  | (4,500) |  |
Cash Asset [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Collateral amount |  | 0 |  | $ 0
NonCash Asset [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Collateral amount |  | 118,000 |  | $ 128,400
Scotiabank [Member] | Honduras Subsidiary [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Repayments of long-term debt, Current |  | (600) |  |
Repayments of long-term debt, Noncurrent |  | (850) |  |
Repayments of long-term debt total |  | (1,450) |  |
Citibank [Member] | Honduras Subsidiary [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Repayments of long-term debt, Current |  | (1,850) |  |
Repayments of long-term debt, Noncurrent |  | (6,063) |  |
Repayments of long-term debt total |  | $ (7,913) |  |
[1] | The carrying amount of non-cash assets assigned as collateral for these loans was $128.4 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 $118.0 million. No cash assets were assigned as collateral for these loans.

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