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Accounting Policies (Tables)
 6 Months Ended
Jul. 31, 2016
Accounting Policies [Abstract]  
Schedule of Inventory, Current [Table Text Block] The components of inventory are as follows as of the dates presented (amounts in thousands):

   July 31,
2016		   January 31,
2016		 
           
Ethanol and other finished goods  $5,469   $3,105 
Work in process   2,912    2,652 
Grain and other raw materials   15,252    11,421 
Total  $23,633   $17,178