v3.25.2
Note 13 - Segment Information - Schedule of Segment Reporting Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Revenues $ 52,243   $ 66,561   $ 95,129 $ 139,195  
Gross profit (loss) (3,355)   (1,806)   (8,435) (2,418)  
Net loss (23,395) $ (24,529) (29,174) $ (24,231) (47,924) (53,405)  
Interest expense including amortization of debt fees 12,330   11,724   26,023 22,237  
Accretion and other expenses of Series A preferred units 2,032   3,477   4,311 6,788  
Income tax (benefit) expense (529)   385   (7,312) 1,263  
Depreciation 2,350   2,049   4,708 3,847  
Stock-based compensation expense 1,433   1,977   3,741 4,946  
Other amortization 11   12   23 24  
EBITDA (5,768)   (5,906)   (16,430) (10,656)  
Capital expenditures 3,525   5,397   5,350 8,980  
Loss on asset disposals     3,644   0 3,644  
Total assets 240,016   259,302   240,016 259,302 $ 259,302
California Ethanol [Member] | Operating Segments [Member]              
Revenues 37,288   40,132   75,036 76,221  
Gross profit (loss) (3,806)   (3,921)   (8,744) (9,579)  
Net loss (12,611)   (17,254)   (27,521) (31,354)  
Interest expense including amortization of debt fees 8,001   7,919   16,462 14,896  
Accretion and other expenses of Series A preferred units 0   0   0 0  
Income tax (benefit) expense 1   0   1 0  
Depreciation 1,075   1,043   2,176 2,009  
Stock-based compensation expense 0   0   0 0  
Other amortization 11   12   23 24  
EBITDA (3,523)   (4,636)   (8,859) (10,781)  
Capital expenditures 339   323   382 430  
Loss on asset disposals     3,644     3,644  
Total assets 53,230   57,076   53,230 57,076  
California Dairy Renewable Natural Gas [Member] | Operating Segments [Member]              
Revenues 3,051   1,598   5,494 5,390  
Gross profit (loss) 855   (136)   1,160 2,074  
Net loss (3,533)   (5,349)   (1,771) (8,515)  
Interest expense including amortization of debt fees 939   730   1,887 1,366  
Accretion and other expenses of Series A preferred units 2,032   3,477   4,311 6,788  
Income tax (benefit) expense 0   2   (6,995) 36  
Depreciation 1,012   771   2,021 1,340  
Stock-based compensation expense 0   0   0 0  
Other amortization 0   0   0 0  
EBITDA 450   (369)   (547) 1,015  
Capital expenditures 2,836   4,306   4,093 7,149  
Loss on asset disposals     0     0  
Total assets 124,099   126,113   124,099 126,113  
India Biodiesel [Member] | Operating Segments [Member]              
Revenues 11,904   24,831   14,599 57,584  
Gross profit (loss) (404)   2,251   (851) 5,087  
Net loss (586)   1,210   (2,298) 2,524  
Interest expense including amortization of debt fees 291   204   747 629  
Accretion and other expenses of Series A preferred units 0   0   0 0  
Income tax (benefit) expense (530)   383   (329) 1,227  
Depreciation 198   180   382 388  
Stock-based compensation expense 0   0   0 0  
Other amortization 0   0   0 0  
EBITDA (627)   1,977   (1,498) 4,768  
Capital expenditures 60   14   439 318  
Loss on asset disposals     0     0  
Total assets 25,462   37,587   25,462 37,587  
Segment Reporting, All Other Segments, Including Corporate [Member]              
Revenues 0   0   0 0  
Gross profit (loss) 0   0   0 0  
Net loss (6,665)   (7,781)   (16,334) (16,060)  
Interest expense including amortization of debt fees 3,099   2,871   6,927 5,346  
Accretion and other expenses of Series A preferred units 0   0   0 0  
Income tax (benefit) expense 0   0   11 0  
Depreciation 65   55   129 110  
Stock-based compensation expense 1,433   1,977   3,741 4,946  
Other amortization 0   0   0 0  
EBITDA (2,068)   (2,878)   (5,526) (5,658)  
Capital expenditures 290   754   436 1,083  
Loss on asset disposals     0     0  
Total assets $ 37,225   $ 38,526   $ 37,225 $ 38,526