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DEBT (Schedule of Short-Term Borrowings) (Details) - USD ($)
$ in Thousands
Nov. 30, 2017
Aug. 31, 2017
Short-term Debt [Line Items]    
Total Amount of Facilities $ 69,000 $ 69,000
Facilities Available 65,955 68,034
Short-term Borrowings [Member]    
Short-term Debt [Line Items]    
Line of credit, Current $ 2,483  
Weighted average interest rate 4.30%  
Letters of Credit [Member]    
Short-term Debt [Line Items]    
Line of credit, Current $ 562 $ 966