CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Total revenues	$ 309	$ 120	$ 630	$ 479
Idle facility costs	2,330	0	2,330	0
Cost of production	318	2,378	5,242	4,896
Idle facility costs	2,330	0	2,330	0
Depreciation and amortization	1,250	1,104	3,429	3,374
Total cost of goods sold	3,898	3,482	11,001	8,270
Gross loss	(3,589)	(3,362)	(10,371)	(7,791)
Operating expenses
Research and development expense	1,562	1,495	4,720	4,205
Selling, general and administrative expense	11,144	9,287	29,205	17,947
Preliminary stage project costs	915	313	1,736	8,512
Other operations	1,303	0	3,814	0
Impairment loss	24,749	0	24,749	0
Loss on disposal of assets	0	183	0	5,137
Stock-based compensation	407	94	1,144	198
Total operating expenses	40,080	11,372	65,368	35,999
Loss from operations	(43,669)	(14,734)	(75,739)	(43,790)
Other income (expense)
Gain (loss) from change in fair value of derivative warrant liability	0	6	16	(4)
Interest expense	(712)	(67)	(716)	(78)
Investment income (loss)	874	233	1,204	354
Gain on forgiveness of SBA loan	0	0	0	641
Other income (expense), net	(279)	182	2,615	187
Total other income (expense), net	(117)	354	3,119	1,100
Net loss	$ (43,786)	$ (14,380)	$ (72,620)	$ (42,690)
Net loss per share - basic (in dollars per share)	$ (0.19)	$ (0.07)	$ (0.34)	$ (0.22)
Net loss per share - diluted (in dollars per share)	$ (0.19)	$ (0.07)	$ (0.34)	$ (0.22)
Weighted-average number of common shares outstanding - basic (in shares)	236,649,805	199,341,519	216,255,710	193,739,605
Weighted-average number of common shares outstanding - diluted (in shares)	236,649,805	199,341,519	216,255,710	193,739,605
Ethanol sales and related products, net
Revenue and cost of goods sold	$ 0	$ 16	$ 240	$ 16
Hydrocarbon revenue
Revenue and cost of goods sold	0	104	81	463
Renewable natural gas commodity
Revenue and cost of goods sold	$ 309	$ 0	$ 309	$ 0