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VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2018
Aug. 31, 2017
Aug. 31, 2016
VALUATION AND QUALIFYING ACCOUNTS [Abstract]      
Balance at Beginning of Period $ 7 $ 7
Aeropost Acquisition 452
Charged to Costs and Expenses 114 9 25
Deductions (476) (9) (18)
Balance at End of Period $ 97 $ 7 $ 7