Represents the amount of warrants or rights exercised in the period.

No definition available.

Name:	gevo_ClassOfWarrantOrRightExercisesInPeriod
Namespace Prefix:	gevo_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of warrants or rights issued during period.

+ References

No definition available.

+ Details

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Namespace Prefix:	gevo_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of embedded derivatives.

+ References

No definition available.

+ Details

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Namespace Prefix:	gevo_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Net fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as assets, net of those classified as liabilities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=117331979&loc=d3e41228-113958

+ Details

Name:	us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Net Increase or Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 15
-URI http://asc.fasb.org/subtopic&trid=2229187

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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Name:	us-gaap_DerivativeInstrumentRiskAxis=gevo_EmbeddedDerivative202021ConvertibleNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=gevo_Convertible2017NotesMember
Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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Note 7 - Embedded Derivatives Liabilities (Details Textual) shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) shares	Jun. 30, 2019 USD ($)	Jan. 31, 2020	Jan. 10, 2020	Dec. 31, 2019 USD ($)	Apr. 19, 2017
Embedded Derivative, Fair Value of Embedded Derivative, Net, Total		$ 300		$ 300				$ 0
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net, Total		(176)	$ 148	$ (276)	$ 394
Class of Warrant or Right, Issued During Period (in shares) \| shares				0
Class of Warrant or Right, Exercises in Period (in shares) \| shares				0
Embedded Derivative, 2020/21 Convertible Notes [Member]
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net, Total		$ 200	$ 100	$ 300	$ 400
Convertible 2020 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	12.00%								12.00%
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger	150.00%
Debt Instrument, Convertible, Threshold Consecutive Trading Days	10
Number of Embedded Derivative	1
Convertible 2017 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	12.00%
Convertible 2020/21 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage						12.00%	12.00%