Summary of Significant Accounting Policies - (Details) gal in Millions	3 Months Ended
	Jan. 31, 2016 gal	Jan. 31, 2015 USD ($)
Plant production capacity	60.0
Measurement, Rolling Twelve Months	twelve
Production (Actual)	70.0
Prior Period Reclassification Adjustment | $		$ 3,359,225
Heron Lake Bioenergy [Member]
Plant production capacity	60.0
Production (Actual)	72.3
Equity Method Investment, Ownership Percentage	50.60%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	49.40%
Project Viking, LLC [Member]
Equity Method Investment, Ownership Percentage	100.00%
Agrinatural, LLC [Member]
Equity Method Investment, Ownership Percentage	73.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	27.00%