Note 13 - Segments - Information on Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Total revenues	$ 8,243	$ 5,616
Loss from operations	(4,999)	(7,182)
Interest expense	825	714
Depreciation and amortization	1,646	1,676
Acquisitions of plant, property and equipment	67	673
Assets	82,873		$ 88,853
Intersegment Eliminations [Member]
Assets	(146,046)		(148,412)
Gevo [Member]
Total revenues	25	90
Loss from operations	(2,476)	(3,065)
Interest expense	825	714
Depreciation and amortization	84	137
Acquisitions of plant, property and equipment		56
Gevo [Member] | Operating Segments [Member]
Assets	81,629		87,507
Gevo Development / Agri-Energy [Member]
Total revenues	8,218	5,526
Loss from operations	(2,523)	(4,117)
Interest expense
Depreciation and amortization	1,562	1,539
Acquisitions of plant, property and equipment	67	$ 617
Gevo Development / Agri-Energy [Member] | Operating Segments [Member]
Assets	$ 147,290		$ 149,758