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DEBT (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands | Aug. 31, 2019 | Aug. 31, 2018 | Aug. 31, 2017
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Debt Instrument [Line Items] |  |  |  |  |  |
Total long-term loans | $ 89,586 | [1] | $ 102,575 | [2] | $ 106,297 | [3]
Less: current portion | 25,875 |  | 14,855 |  | 18,358 |
Long-term debt, net of current portion | 63,711 |  | 87,720 |  | $ 87,939 |
Long term debt with balloon payment [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Total long-term loans | 7,481 |  | 9,509 |  |  |
Interest Rate Swap With Non-Cash Assets And/Or Cash Or Cash Equivalents [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Total long-term loans | 53,544 |  | 60,849 |  |  |
Non-Cash Assets And/Or Cash Or Cash Equivalents [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Total long-term loans | 4,337 |  | 4,392 |  |  |
Cross Currency Interest Rate Swap With Non-Cash Assets And/Or Cash Or Cash Equivalents [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Total long-term loans | $ 24,224 |  | $ 27,825 |  |  |
[1] | The carrying amount on non-cash assets assigned as collateral for these loans was $111.3 million. No cash assets were assigned as collateral for these loans.
[2] | The carrying amount on non-cash assets assigned as collateral for these loans was $125.9 million. No cash assets were assigned as collateral for these loans.
[3] | The carrying amount on non-cash assets assigned as collateral for these loans was $128.4 million. No cash assets were assigned as collateral for these loans.

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