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MARKETABLE SECURITIES (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 14, 2018
Feb. 28, 2019
Feb. 28, 2019
Aug. 31, 2018
Statements [Line Items]        
Gain on fair value of marketable securities   $ (253) $ 609  
RBPlats [Member]        
Statements [Line Items]        
Number of equity instruments received       4,524,279
Amount received on shares sold $ 7,800      
Gain on fair value of marketable securities     $ 609