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Working capital - current assets less current liabilities

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Percent Of Sum Of Total Commitment Plus Aggregate Seasonal Line Commitments

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Undrawn Availability of Revolving Credit Facility On A ProForma Basis

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

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Face (par) amount of debt instrument at time of issuance.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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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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Debt (Narrative - Agribusiness And Energy Services Segment) (Details)		12 Months Ended
	Jun. 27, 2019 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)
Debt Instrument [Line Items]
Short-term notes payable and other borrowings		$ 187,812,000		$ 163,751,000
Long-term debt, net		433,612,000
Agribusiness and Energy Services [Member] \| Green Plains Grain [Member]
Debt Instrument [Line Items]
Minimum working capital required for compliance		$ 18,000,000
Percent Of Sum Of Total Commitment Plus Aggregate Seasonal Line Commitments		18.00%
Minimum Net Worth Required For Compliance, Percent		21.00%
Fixed charge coverage ratio		1.25
Annual leverage ratio		6.00
Maximum Capital Expenditures Per Year Under Agreement		$ 8,000,000.0
Maximum Unused Amounts For Capital Expenditures Under Agreements		8,000,000.0
Maximum Long Term Indebtness Benchmark Under Agreement		$ 10,000,000.0
Maximum Long Term Debt Capitalization Under Agreement		40.00%
Short-term notes payable and other borrowings		$ 0
Agribusiness and Energy Services [Member] \| Green Plains Grain [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 125,000,000.0	$ 100,000,000.0
Debt Instrument, Maturity Date	Jul. 26, 2019	Jun. 28, 2022
Additional amounts available under facility, accordion feature		$ 75,000,000.0
Line of credit, maximum borrowing capacity		$ 225,000,000.0
Agribusiness and Energy Services [Member] \| Green Plains Grain [Member] \| Revolving Credit Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate, percentage		3.00%
Agribusiness and Energy Services [Member] \| Green Plains Grain [Member] \| Revolving Credit Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate, percentage		2.00%
Agribusiness and Energy Services [Member] \| Green Plains Grain [Member] \| Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Unused capacity fee, percentage		0.375%
Agribusiness and Energy Services [Member] \| Green Plains Grain [Member] \| Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Unused capacity fee, percentage		0.50%
Agribusiness and Energy Services [Member] \| Green Plains Grain [Member] \| Seasonal Borrowings [Member]
Debt Instrument [Line Items]
Additional amounts available under facility, accordion feature		$ 50,000,000.0
Agribusiness and Energy Services [Member] \| Green Plains Trade [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Additional amounts available under facility, accordion feature		70,000,000.0
Line of credit, maximum borrowing capacity		300,000,000.0
Minimum working capital required for compliance		$ 1,500,000
Fixed charge coverage ratio		1.15
Allowable dividends as percentage of net profit before taxes		50.00%
Undrawn availability of revolving credit facility on a pro forma basis		$ 10,000,000.0
Availability Benchmark Period Under Agreement		30 days
Unused capacity fee, percentage		0.375%
Agribusiness and Energy Services [Member] \| Green Plains Trade [Member] \| Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date		Jul. 28, 2022
Interest rate, basis spread on variable rate, percentage		2.25%
Line of credit, maximum borrowing capacity		$ 285,000,000
Agribusiness and Energy Services [Member] \| Green Plains Trade [Member] \| First-in-last-out (FILO) Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate, percentage		3.25%
Line of credit, maximum borrowing capacity		$ 15,000,000
Agribusiness and Energy Services [Member] \| Green Plains Commodity Management [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date		Apr. 30, 2023
Line of credit, maximum borrowing capacity		$ 30,000,000.0	$ 20,000,000.0
Agribusiness and Energy Services [Member] \| Green Plains Commodity Management [Member] \| Revolving Credit Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate, percentage		1.75%
$50.0 Million Inventory Financing [Member] \| Green Plains Grain [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 50,000,000.0