Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents		$ 16,201	$ 78,338
Marketable securities (current)		285,236	0
Restricted cash (current)		49,804	0
Accounts receivable, net		513	527
Inventories		2,341	2,491
Prepaid expenses and other current assets		7,243	1,914
Total current assets		361,338	83,270
Property, plant and equipment, net		102,163	66,408
Long-term marketable securities		101,003	0
Long-term restricted cash		70,168	0
Operating right-of-use assets		1,591	133
Finance right-of-use assets		27,665	176
Intangible assets, net		9,098	114
Deposits and other assets		2,329	1,998
Total assets	[1]	675,355	152,099
Current liabilities
Accounts payable and accrued liabilities		24,582	3,943
Operating lease liabilities (current)		0	172
Finance lease liabilities (current)		2,727	10
Loans payable - other (current)		165	807
Total current liabilities		27,474	4,932
2021 Bonds payable (long-term)		66,303	0
Loans payable - other (long-term)		357	447
Operating lease liabilities (long-term)		1,732	0
Finance lease liabilities (long-term)		19,598	162
Other long-term liabilities		91	179
Total liabilities		115,555	5,720
Commitments and Contingencies (See Note 12)
Stockholders' Equity
Common stock, $0.01 par value per share; 250,000,000 authorized; 201,879,978 and 128,138,311 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively.		2,019	1,282
Additional paid-in capital		1,098,939	643,269
Accumulated other comprehensive loss		(296)	0
Accumulated deficit		(540,862)	(498,172)
Total stockholders' equity		559,800	146,379
Total liabilities and stockholders' equity		$ 675,355	$ 152,099

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