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INCOME TAXES (Narrative) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Aug. 31, 2018 | Aug. 31, 2017 | Aug. 31, 2016 | Aug. 31, 2015
Income Tax Contingency [Line Items] |  |  |  |
Provision for income taxes, percentage | 39.30% | 31.70% | 32.60% |
Favorable net impact resulting from the U.S. Tax Reform Transition Tax | 2.60% |  |  |
Unfavorable net impact resulting from the U.S. Tax Reform Transition Tax | 10.20% |  |  |
Net favorable impact | 2.40% |  |  |
Re-measurement of net deferred tax assets/liabilities | 0.20% |  |  |
Deferred Tax Assets, Net, Foreign | $ 9,900,000 | $ 9,400,000 |  |
Operating loss carryforwards (NOLs), annual limitation amount | 7,500,000 |  |  |
Undistributed foreign earnings | 45,200,000 | 544,600,000 |  |
Unrecognized tax benefits | 7,005,000 | 7,694,000 | $ 7,754,000 | $ 8,159,000
Deferred income taxes that could reduce unrecognized tax benefits | 4,500,000 |  |  |
Timing Adjustments | 400,000 |  |  |
Unrecognized tax benefitt, net amount if recognized would favorably affect the effective tax rate | 6,600,000 |  |  |
Expected change in unrecognized tax benefits reduction of taxes payable | 1,400,000 |  |  |
Income taxes receivable | 24,509,000 | 16,895,000 |  |
Income tax interest and/or penalties accrued | $ 2,100,000 | 214,000 |  |
Colombia Subsidiary [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Favorable tax impact | 1.60% |  |  |
Net favorable impact | 1.00% |  |  |
Barbados Subsidiary [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Favorable tax impact | 1.60% |  |  |
Aeropost, Inc [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Income tax interest and/or penalties accrued | $ 1,800,000 |  |  |
Federal and State Jurisdicition [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Operating loss carryforwards | 18,000,000 | $ 23,500,000 |  |
California State Jurisdiction [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Operating loss carryforwards | 5,500,000 |  |  |
Florida State Jurisdiction [Member] | Aeropost, Inc [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Operating loss carryforwards | 18,000,000 |  |  |
NOL expected to expire | 9,400,000 |  |  |
Unknown Country [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Deferred tax assets, net | 2,100,000 |  |  |
Income taxes receivable | $ 7,100,000 |  |  |

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