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Accounting Policies (Tables)
3 Months Ended
Apr. 30, 2021
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):
   April 30,
2021
       January 31,
2021
       
Ethanol and other finished goods  $6,102  $18,346
Work in process   5,213   4,374
Grain and other raw materials   15,372   15,160
Total  $26,687  $37,880