Stock-Based Compensation (Schedule Of Non-Vested Stock Award And DSU Activity) (Details)	12 Months Ended
Dec. 31, 2019 $ / shares shares
Restricted Stock Awards And Deferred Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested, shares or units \| shares	882,288
Non-vested, Weighted-Average Grant-Date Fair Value \| $ / shares	$ 19.12
Granted, shares or units \| shares	497,118
Granted, Weighted-Average Grant-Date Fair Value \| $ / shares	$ 15.40
Forfeited, shares or units \| shares	(138,110)
Forfeited, Weighted-Average Grant-Date Fair Value \| $ / shares	$ 17.55
Vested, shares or units \| shares	(489,981)
Vested, Weighted-Average Grant-Date Fair Value \| $ / shares	$ 18.31
Non-vested, shares or units \| shares	751,315
Non-vested, Weighted-Average Grant-Date Fair Value \| $ / shares	$ 17.48
Non-vested, Weighted-Average Remaining Vesting Term (in years)	1 year 7 months 6 days
Green Plains Partners LP [Member] \| Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested, shares or units \| shares	18,582
Non-vested, Weighted-Average Grant-Date Fair Value \| $ / shares	$ 16.96
Granted, shares or units \| shares	22,856
Granted, Weighted-Average Grant-Date Fair Value \| $ / shares	$ 14.00
Vested, shares or units \| shares	(18,582)
Vested, Weighted-Average Grant-Date Fair Value \| $ / shares	$ 16.96
Non-vested, shares or units \| shares	22,856
Non-vested, Weighted-Average Grant-Date Fair Value \| $ / shares	$ 14.00
Non-vested, Weighted-Average Remaining Vesting Term (in years)	6 months

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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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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