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RISKS AND UNCERTAINTIES (Details)
gal in Millions
1 Months Ended 12 Months Ended
Oct. 31, 2018
Oct. 31, 2019
Y
Dec. 19, 2019
gal
Conventional ethanol      
RISKS AND UNCERTAINTIES      
Renewable volume requirements     15,000
Advanced biofuels      
RISKS AND UNCERTAINTIES      
Renewable volume requirements     5,090
Cellulosic ethanol      
RISKS AND UNCERTAINTIES      
Renewable volume requirements     590
Renewable fuels      
RISKS AND UNCERTAINTIES      
Renewable volume requirements     20,090
Statutory renewable volume requirement     30,000
Percentage mandatory renewable fuel volumes are reduced   20.00%  
Number of consecutive years | Y   2  
Threshold percentage 20.00%    
Total revenues | Customer | Ethanol | Minimum      
RISKS AND UNCERTAINTIES      
Concentration percentage   75.00%  
Total revenues | Customer | Ethanol | Maximum      
RISKS AND UNCERTAINTIES      
Concentration percentage   85.00%  
Cost of goods sold | Product | Corn | Minimum      
RISKS AND UNCERTAINTIES      
Concentration percentage   70.00%  
Cost of goods sold | Product | Corn | Maximum      
RISKS AND UNCERTAINTIES      
Concentration percentage   90.00%