Note 7 - Embedded Derivatives Liabilities (Details Textual) shares in Thousands	3 Months Ended
Mar. 31, 2021 shares
Class of Warrant or Right, Issued During Period (in shares)	0

The number of warrants or rights issued during period.

No definition available.

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