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DEBT - Short-term (Details) (USD $)
In Thousands, unless otherwise specified
Nov. 30, 2014
Aug. 31, 2014
Line of Credit Facility [Line Items]    
Total Amount of Facilities $ 60,558us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity $ 61,869us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Facilities Available 43,388us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity 61,433us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Debt, Weighted Average Interest Rate 4.55%us-gaap_DebtWeightedAverageInterestRate  
Short-term Borrowings    
Line of Credit Facility [Line Items]    
Facilities Used 17,066us-gaap_LineOfCredit
/ us-gaap_LineOfCreditFacilityAxis
= us-gaap_LineOfCreditMember
0us-gaap_LineOfCredit
/ us-gaap_LineOfCreditFacilityAxis
= us-gaap_LineOfCreditMember
Letters of Credit    
Line of Credit Facility [Line Items]    
Facilities Used $ 104us-gaap_LineOfCredit
/ us-gaap_LineOfCreditFacilityAxis
= us-gaap_LetterOfCreditMember
$ 436us-gaap_LineOfCredit
/ us-gaap_LineOfCreditFacilityAxis
= us-gaap_LetterOfCreditMember