Note 22 - Subsequent Events	12 Months Ended
Dec. 31, 2021
Notes to Financial Statements
Subsequent Events [Text Block]	22. Subsequent Events On January 27, 2022, the Company’s stockholders voted approved to amend the Certificate of Incorporation to increase the total number of authorized shares of common stock from 250,000,000 shares to 500,000,000 shares. On February 7, 2022, an incident occurred at one of the anaerobic digesters that is part of Gevo's RNG project that resulted in the accidental discharge of a mixture of water and manure into the environment. The Company promptly notified the Iowa Department of Natural Resources (the "DNR") and began mitigation work to minimize the impact of the discharge. The DNR has issued Gevo a notice of violation in connection with the discharge. There is a possibility that the Iowa Department of Natural Resources will initiate an enforcement action that could result in a monetary sanction against Gevo for the accidental discharge. Gevo does not believe that any such monetary sanction would be material or exceed $300,000.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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