The down payment on the total consideration to be paid for the business acquisition.

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The interest rate on the promissory note if the entire balance is not paid when due under the terms of the capital units subscription agreement.

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The maximum period of written notice by the creditor that the promissory note issued under the terms of the capital unit subscription becomes due.

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The amount of a promissory note issued in conjunction with the business acquisition.

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

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Measurement, Rolling Twelve Months

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- Definition

Plant production capacity

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Production (Actual)

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The percentage of revenues accounted for by the majority-owned subsidiary.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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No definition available.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Cumulative number of shares issued or sold by the subsidiary or equity method investee on all stock transactions.

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Summary of Significant Accounting Policies (Details) $ / shares in Units, gal in Millions		3 Months Ended	6 Months Ended
	Nov. 01, 2016 USD ($) $ / shares shares	Apr. 30, 2016 gal	Apr. 30, 2017 shares gal
Plant production capacity			60.0
Measurement, Rolling Twelve Months			twelve
Production (Actual)			70.0
Heron Lake BioEnergy, LLC
Plant production capacity			60.0
Production (Actual)			72.3
Equity Method Investment, Ownership Percentage			100.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners			49.30%
Granite Falls Energy, LLC
Equity Method Investment, Ownership Percentage			50.70%
Agrinatural, LLC [Member]
Equity Method Investment, Ownership Percentage			73.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners			27.00%
Agrinatural, LLC [Member] \| Maximum [Member]
Revenues of subsidiary, percentage			1.00%
Ring-neck Energy & Feed, LLC
Investment
Down payment \| $	$ 750,000
Promissory note \| $	$ 6,750,000
Period of written notice of creditor for promissory note to become due	20 days
Interest rate if promissory note amount is not paid in full when due	12.00%
Expected ethanol production capacity		80.0
Capital Units [Member] \| Ring-neck Energy & Feed, LLC
Investment
Subscribe to purchase capital units, in units \| shares	1,500		1,500
Price per unit paid \| $ / shares	$ 5,000
Total price \| $	$ 7,500,000