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NET SALES AND REVENUE (Tables)
 12 Months Ended
Jan. 31, 2017
Net Sales And Revenue [Abstract]  
Revenue from External Customers by Products and Services [Table Text Block] The following table summarizes sales for each product and service group for the periods presented (amounts in thousands):

   Fiscal Year 
Product or Service Category  2016   2015   2014 
             
Ethanol  $358,349   $333,200   $452,831 
Dried distillers grains   71,204    81,116    96,328 
Non-food grade corn oil   18,518    15,510    16,985 
Modified distillers grains   5,326    5,999    4,814 
Other   402    663    1,272 
Total  $453,799   $436,488   $572,230