Represents the percentage charged for maintaining debt instruments.

No definition available.

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Represents the period of worth of debt for which the entity is required to make deposits regarding debt instruments.

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No definition available.

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The amount of the deposit on debt service payments.

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No definition available.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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Description of the frequency of periodic payments (monthly, quarterly, annual).

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of the required periodic payments including both interest and principal payments.

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- Definition

The effective interest rate at the end of the reporting period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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DEBT FACILITIES - Granite Falls Energy And Heron Lake BioEnergy (Details) - USD ($)			12 Months Ended
	Sep. 08, 2017	Aug. 02, 2017	Oct. 31, 2017	Oct. 31, 2016
Line of Credit Facility
Long-term Debt			$ 8,897,685	$ 1,883,726
Less: amounts due within one year			432,183	490,057
Net long term debt			$ 8,465,502	$ 1,393,669
Seasonal Revolving Loan \| Granite Falls Energy, LLC Excluding Heron Lake BioEnergy, LLC
Line of Credit Facility
Interest rate (as a percent)			3.99%
Revolving term note payable to lending institution \| Heron Lake BioEnergy, LLC
Line of Credit Facility
Interest rate (as a percent)			4.49%	3.45%
Assessments payable as part of water treatment agreement, with interest at 6.55%, due in 2021 \| Heron Lake BioEnergy, LLC
Line of Credit Facility
Long-term Debt			$ 1,241,171	$ 1,517,046
Payment			$ 189,393
Frequency of payment			semi-annual	semi-annual
Interest rate (as a percent)			6.55%
Period of worth of debt			1 year
Deposit on debt service payments			$ 364,000
Assessments payable as part of water supply agreement, with interest at 8.73%, due in 2019 \| Heron Lake BioEnergy, LLC
Line of Credit Facility
Long-term Debt			56,514	$ 97,930
Payment			$ 3,942
Frequency of payment			monthly	monthly
Interest rate (as a percent)			8.73%
Note payable to electrical company, due September 2017 \| Heron Lake BioEnergy, LLC
Line of Credit Facility
Long-term Debt				$ 68,750
Payment				$ 6,250
Frequency of payment				monthly
Interest rate (as a percent)				0.00%
Maintenance fee (as a percent)				1.00%
Note payable to noncontrolling interest member of Agrinatural, Interest One Month LIBOR plus 4.0 % \| Heron Lake BioEnergy, LLC
Line of Credit Facility
Long-term Debt			$ 100,000	$ 200,000
Interest rate (as a percent)			5.24%	4.53%
Project Hawkeye Loan \| Granite Falls Energy, LLC Excluding Heron Lake BioEnergy, LLC
Line of Credit Facility
Long-term Debt			$ 7,500,000
Interest rate (as a percent)			4.29%
One Month LIBOR \| Seasonal Revolving Loan \| Granite Falls Energy, LLC Excluding Heron Lake BioEnergy, LLC
Line of Credit Facility
Spread above variable interest rate	2.75%
One Month LIBOR \| Revolving term note payable to lending institution \| Heron Lake BioEnergy, LLC
Line of Credit Facility
Spread above variable interest rate			3.25%
One Month LIBOR \| Note payable to noncontrolling interest member of Agrinatural, Interest One Month LIBOR plus 4.0 % \| Heron Lake BioEnergy, LLC
Line of Credit Facility
Spread above variable interest rate			4.00%
One Month LIBOR \| Project Hawkeye Loan \| Granite Falls Energy, LLC Excluding Heron Lake BioEnergy, LLC
Line of Credit Facility
Spread above variable interest rate		3.05%