Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

+ Details

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

- Definition

The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

+ Details

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

- Definition

The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

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

- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Note 7 - Intangible Assets (Details Textual) - USD ($) $ in Thousands		12 Months Ended
	Sep. 21, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Payments to Acquire Intangible Assets		$ 9,170	$ (0)	$ (0)
Finite-Lived Intangible Assets, Net, Ending Balance		8,938	114
Gevo [Member]
Finite-Lived Intangible Assets, Net, Ending Balance		8,800
Agri-Energy [Member]
Finite-Lived Intangible Assets, Net, Ending Balance		100
Patents [Member]
Finite-Lived Intangible Assets, Net, Ending Balance		4,207	$ 114
Defensive Assets [Member]
Finite-Lived Intangible Assets, Net, Ending Balance		$ 4,731
Asset Purchase Agreement with Butamax [Member]
Payments to Acquire Intangible Assets	$ 9,200
Legal Fees	200
Asset Purchase Agreement with Butamax [Member] \| Patents [Member]
Payments to Acquire Intangible Assets	4,300
Asset Purchase Agreement with Butamax [Member] \| Defensive Assets [Member]
Payments to Acquire Intangible Assets	$ 4,900