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DEBT (Schedule of Short-Term Borrowings) (Details) - USD ($)
$ in Thousands
May 31, 2016
Aug. 31, 2015
Short-term Debt [Line Items]    
Total Amount of Facilities $ 64,993 $ 57,691
Facilities Available $ 45,608 $ 50,357
Short-term Borrowings Letters Of Credit Facilities Available [Member]    
Short-term Debt [Line Items]    
Weighted average interest rate 6.70% 5.90%
Short-term Borrowings    
Short-term Debt [Line Items]    
Line of credit, Current $ 10,127 $ 6,606
Letters of Credit    
Short-term Debt [Line Items]    
Line of credit, Current $ 9,258 $ 728