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ACQUISITION (Narrative) (Details) - USD ($) |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Mar. 15, 2018 | Aug. 31, 2018 | May 31, 2018 | Aug. 31, 2017 | Aug. 31, 2016
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  | $ 46,329,000 |  | $ 35,642,000 | $ 35,637,000
Aeropost, Inc [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total cash consideration |  | $ 28,953,000 |  |  |
Period of employment from date of closing |  | 15 months |  |  |
Total consideration |  | $ 25,103,000 |  |  |
Deferred tax assets |  |  | $ 4,200,000 |  |
Deferred tax liabilities |  |  | 641,000 |  |
Goodwill |  | $ 11,230,000 | $ 4,800,000 |  |
Maximum [Member] | Aeropost, Inc [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total consideration | $ 5,000,000 |  |  |  |

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