The expected volume of ethanol production capacity for the specified period.

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The number of directors the entity has the right to appoint with equity investment entity if equity investment entity accepts entity's subscription.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Investments (Details) $ / shares in Units, gal in Millions			12 Months Ended
	Aug. 02, 2017 USD ($)	Nov. 01, 2016 USD ($) director $ / shares shares gal	Oct. 31, 2017 USD ($) shares	Oct. 31, 2016 USD ($)	Oct. 31, 2015 USD ($)
Long-Lived Assets
Impairment of long-lived assets			$ 0	$ 0	$ 0
Investment
Payment for equity method investment			7,500,000
Proceeds from long-term debt			$ 7,500,000	$ 9,820,222	$ 13,440,989
Ringneck Energy and; Feed, LLC
Investment
Expected ethanol production capacity \| gal		80
Number of directors Company has the right to appoint \| director		1
Granite Falls Energy, LLC Excluding Heron Lake BioEnergy, LLC \| Ringneck Energy and; Feed, LLC
Investment
Units purchased \| shares		1,500
Price per unit (in dollars per unit) \| $ / shares		$ 5,000
Total cost		$ 7,500,000
Payment for equity method investment	$ 6,750,000	750,000
Note payable		$ 6,750,000
Granite Falls Energy, LLC Excluding Heron Lake BioEnergy, LLC \| Project Hawkeye Loan \| Ringneck Energy and; Feed, LLC
Investment
Units purchased \| shares			1,500
Proceeds from long-term debt			$ 7,500,000