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DEBT (Schedule of Short-Term Borrowings) (Details) - Facilities [Member] - USD ($)
$ in Thousands
May 31, 2019
Aug. 31, 2018
Short-term Debt [Line Items]    
Total Amount of Facilities $ 69,000 $ 69,000
Facilities Available $ 66,276 68,368
Weighted average interest rate 6.50%  
Short-term Borrowings [Member]    
Short-term Debt [Line Items]    
Line of credit, Current $ 2,152  
Letters of Credit [Member]    
Short-term Debt [Line Items]    
Line of credit, Current $ 572 $ 632