Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands		Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents		$ 6,337	$ 16,302
Accounts receivable		746	1,135
Inventories		2,480	3,201
Prepaid expenses and other current assets		3,793	3,590
Total current assets		13,356	24,228
Property, plant and equipment, net		64,689	66,696
Investment in Juhl		1,500	1,500
Deposits and other assets		556	935
Total assets	[1]	80,101	93,359
Current liabilities:
Accounts payable and accrued liabilities		3,999	5,678
2020/21 Notes embedded derivative liability		276
Loans payable - other (current)		603	516
Total current liabilities		19,171	20,094
Loans payable - other (long-term)		774	233
Other long-term liabilities		269	528
Total liabilities		20,214	20,855
Commitments and Contingencies (see Note 11)
Stockholders' Equity
Common stock, $0.01 par value per share; 250,000,000 authorized; 15,514,098 and 14,083,232 shares issued and outstanding at June 30, 2020 and December 31, 2019, respectively.		154	141
Additional paid-in capital		533,015	530,349
Accumulated deficit		(473,282)	(457,986)
Total stockholders' equity		59,887	72,504
Total liabilities and stockholders' equity		80,101	93,359
Convertible 2020/21 Notes [Member]
Current liabilities:
Notes (current), net		$ 14,293
Convertible 2020 Notes [Member]
Current liabilities:
Notes (current), net			$ 13,900

[1] All other significant non-cash items relate to the activities of Gevo.