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Accounting Policies (Tables)
6 Months Ended
Jul. 31, 2013
Accounting Policies [Abstract]  
Schedule of Inventory, Current [Table Text Block] The components of inventory at July 31, 2013 and January 31, 2013 are as follows (amounts in thousands):

    July 31,
2013
    January 31,
2013
Ethanol and other finished goods   $ 6,982     $ 7,306
Work in process     4,483       4,414
Grain and other raw materials     17,907       13,199
Total   $ 29,372     $ 24,919