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7. Agreements (Tables)
6 Months Ended
Jun. 30, 2018
Disclosure 7.Agreements Tables Abstract  
Schedule of working capital agreement activity
   

 As of and for the three

months ended June 30,

   

 As of and for the six

months ended June 30,

 
    2018     2017     2018     2017  
Ethanol sales   $ 30,129     $ 28,130     $ 58,341     $ 51,675  
Wet distiller's grains sales     8,499       6,457       16,327       12,038  
Corn oil sales     893       852       1,816       1,650  
Corn/milo purchases     28,760       26,338       56,505       49,727  
Accounts receivable     852       384       852       384  
Accounts payable     2,241       1,719       2,241       1,719