The amount of the correction of an immaterial error from a prior period.

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- Definition

Measurement, Rolling Twelve Months

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No definition available.

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- References

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- Definition

Plant production capacity

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- Definition

Production (Actual)

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No definition available.

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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- Definition

The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

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

+ References

No definition available.

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

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Summary of Significant Accounting Policies Narrative (Details) gal in Millions	12 Months Ended			36 Months Ended
	Oct. 31, 2016 USD ($) gal	Oct. 31, 2015 USD ($)	Oct. 31, 2014 USD ($)	Oct. 31, 2016 USD ($)
Correction of immaterial error, amount \| $	$ 3,359,000		$ 606,000
Environmental liability expense \| $				$ 0
Impairment of goodwill \| $				$ 0
Other Intangibles
Economic useful life of other intangibles	15 years
Amortization of Intangible Assets \| $	$ 38,000	$ 38,000	$ 58,000
Heron Lake BioEnergy, LLC [Member]
Equity Method Investment, Ownership Percentage	50.60%			50.60%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	49.40%			49.40%
Plant production capacity \| gal	60.0
Heron Lake BioEnergy, LLC [Member] \| Maximum [Member]
Plant production capacity \| gal	72.3
Agrinatural, LLC [Member]
Equity Method Investment, Ownership Percentage	73.00%			73.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	27.00%			27.00%
Granite Falls Energy, LLC [Member]
Plant production capacity \| gal	60.0
Production (Actual) \| gal	70.0
Measurement, Rolling Twelve Months	twelve