Note 3 - Revenues From Contracts Wtih Customers Other Revenues - Dissagregated Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue	$ 8,243	$ 5,584
Other revenues		32
Total revenues	8,243	5,616
UNITED STATES
Revenue	8,243	5,494
Other revenues		32
Total revenues	8,243	5,526
All Other Countries [Member]
Revenue		90
Other revenues
Total revenues		90
Gevo [Member]
Revenue	25	90
Other revenues
Total revenues	25	90
Gevo Development / Agri-Energy [Member]
Revenue	8,218	5,494
Other revenues		32
Total revenues	8,218	5,526
Transferred at Point in Time [Member]
Revenue	8,218	5,584
Other revenues
Total revenues	8,218	5,584
Transferred over Time [Member]
Revenue	25
Other revenues		32
Total revenues	25	32
Ethanol Sales and Related Products [Member]
Revenue	8,218	5,494
Other revenues
Total revenues	8,218	5,494
Hydrocarbon [Member]
Revenue		90
Other revenues
Total revenues		90
Grant and Other [Member]
Revenue	25
Other revenues		32
Total revenues	$ 25	$ 32