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DEBT (Schedule of Long-Term Debt) (Details) - USD ($)
$ in Thousands
Aug. 31, 2017
Aug. 31, 2016
Debt Instrument [Line Items]    
Total $ 106,297 [1] $ 88,107 [2]
Less: current portion 18,358 14,565
Long-term debt, net of current portion 87,939 73,542
Long term debt with balloon payment [Member]    
Debt Instrument [Line Items]    
Total 18,200 21,945
Interest Rate Swap With Non-Cash Assets And/Or Cash Or Cash Equivalents [Member]    
Debt Instrument [Line Items]    
Total 49,424 32,258
Non-Cash Assets And/Or Cash Or Cash Equivalents [Member]    
Debt Instrument [Line Items]    
Total 17,585 9,717
Cross Currency Interest Rate Swap With Non-Cash Assets And/Or Cash Or Cash Equivalents [Member]    
Debt Instrument [Line Items]    
Total $ 21,088 $ 24,187
[1] The carrying amount on non-cash assets assigned as collateral for these loans was $128.4 million. No cash assets were assigned as collateral for these loans as of August 31, 2017.
[2] The carrying amount on non-cash assets assigned as collateral for these loans was $102.4 million. No cash assets were assigned as collateral for these loans.