REVENUE - Revenue (Details) - USD ($)	3 Months Ended												12 Months Ended
	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Revenue Recognition
Total Revenues	$ 28,267,341	$ 27,367,787	$ 25,494,797	$ 25,697,520	$ 24,365,831	$ 26,252,916	$ 29,880,856	$ 27,972,451	$ 27,994,905	$ 28,541,889	$ 25,990,784	$ 27,390,074	$ 106,827,445	$ 108,472,054	$ 109,917,652
Payment terms													10 days
Ethanol production
Revenue Recognition
Total Revenues													$ 105,395,553
Natural gas pipeline
Revenue Recognition
Total Revenues													1,431,892
Ethanol
Revenue Recognition
Total Revenues													82,544,145
Ethanol | Ethanol production
Revenue Recognition
Total Revenues													82,544,145
Distillers' Grains
Revenue Recognition
Total Revenues													18,214,512
Distillers' Grains | Ethanol production
Revenue Recognition
Total Revenues													18,214,512
Corn Oil
Revenue Recognition
Total Revenues													3,513,679
Corn Oil | Ethanol production
Revenue Recognition
Total Revenues													3,513,679
Other
Revenue Recognition
Total Revenues													1,123,217
Other | Ethanol production
Revenue Recognition
Total Revenues													1,123,217
Natural Gas
Revenue Recognition
Total Revenues													$ 1,431,892
Payment terms													20 days
Natural Gas | Natural gas pipeline
Revenue Recognition
Total Revenues													$ 1,431,892