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DERIVATIVES AND RISK MANAGEMENT (Derivatives Not Designated as Hedging Instruments) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Feb. 28, 2019
Feb. 28, 2018
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) before income taxes for derivatives not designated as hedges $ (2,951) $ (1,762) $ (3,665) $ 1,174
Commodity | Cost of goods sold        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) before income taxes for derivatives not designated as hedges (2,425) (2) (3,265) 573
Foreign exchange | Cost of goods sold        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) before income taxes for derivatives not designated as hedges 0 (31) 0 (50)
Foreign exchange | SG&A expenses        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) before income taxes for derivatives not designated as hedges $ (526) $ (1,729) $ (400) $ 651