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Accounting Policies (Tables)
3 Months Ended
Apr. 30, 2013
Schedule of Inventory, Current [Table Text Block] The components of inventory at April 30, 2013 and January 31, 2013 are as follows (amounts in thousands):
    April 30,
2013
    January 31,
2013
 
                 
Ethanol and other finished goods   $ 7,468     $ 7,306  
Work in process     4,744       4,414  
Grain and other raw materials     8,973       13,199  
Total   $ 21,185     $ 24,919