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DERIVATIVE FINANCIAL INSTRUMENTS (Details)
bu in Millions
Jan. 31, 2017
USD ($)
bu
Jan. 31, 2016
bu
Disclosure Text Block Supplement [Abstract]    
Quantity Of Bushels Under Commodity Futures 0.7  
Quantity of Bushels under Forward Purchase Contract 5.3 0.7
Debt Instrument, Collateral Amount (in Dollars) | $ $ 131,000