CONCENTRATIONS (Details) - customer	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
CONCENTRATIONS
Number of major customers	3	3	3
Total revenues | Customer
CONCENTRATIONS
Number of major customers	3	3	3
Total revenues | Customer | Eco-Energy, Inc. | Ethanol production
CONCENTRATIONS
Concentration percentage	77.30%	76.30%	81.30%
Total revenues | Customer | Gavilon Ingredients, LLC | Distiller's grains
CONCENTRATIONS
Concentration percentage	16.90%	18.30%	13.70%
Total revenues | Customer | RPMG, Inc. | Corn Oil
CONCENTRATIONS
Concentration percentage	3.30%	3.70%	4.50%
Accounts receivable | Credit
CONCENTRATIONS
Number of major customers	3	3	3
Accounts receivable | Credit | Eco-Energy, Inc. | Ethanol production
CONCENTRATIONS
Concentration percentage	80.00%	77.60%
Accounts receivable | Credit | Gavilon Ingredients, LLC | Distiller's grains
CONCENTRATIONS
Concentration percentage	15.30%	15.40%
Accounts receivable | Credit | RPMG, Inc. | Corn Oil
CONCENTRATIONS
Concentration percentage	2.80%	2.60%