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8. Agreements (Tables)
9 Months Ended
Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]  
Schedule of working capital agreement activity
   

As of and for the three months ended

September 30,

   

As of and for the nine months ended

September 30,

 
    2020      2019      2020      2019   
Ethanol sales   $ -     $ 27,456     $ 26,049     $ 84,453  
Wet distiller's grains sales     7,143       8,783       22,983       26,119  
Corn oil sales     827       934       2,806       2,586  
Corn purchases     25,513       30,446       77,268       90,426  
Accounts receivable     161       1,066       161       1,066  
Accounts payable     1,978       2,484       1,978       2,484