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Note 10 - Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

December 31,

 
  2021  

2020

 

Raw materials

        

Corn

 $301  $ 

Enzymes and other inputs

  183   133 
Nutrients  3   1 
Palladium  265   235 

Finished goods

        

SAF, Isooctane and Isooctene

  335   756 

Isobutanol

  223    

Ethanol

  96    

Work in process

        

Agri-Energy

  83    

Gevo

     5 

Spare parts

  1,262   1,361 
         

Total inventories

 $2,751  $2,491