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Accounting Policies (Tables)
9 Months Ended
Oct. 31, 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):
   October 31,
2021
   January 31,
2021
 
             
Ethanol and other finished goods        $7,135         $18,346 
Work in process     5,097      4,374 
Grain and other raw materials     17,521      14,706 
Total    $29,753     $37,426