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Accounting Policies (Details) - Schedule of components of inventory (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2014
Jan. 31, 2014
Schedule of components of inventory [Abstract]    
Ethanol and other finished goods $ 3,764 $ 3,517
Work in process 2,679 3,017
Grain and other raw materials 10,844 12,836
Total $ 17,287 $ 19,370