v3.26.1
Note 3 - Investments (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 84 Months Ended
Jun. 30, 2026
Apr. 30, 2026
Mar. 26, 2026
Dec. 31, 2025
Mar. 31, 2024
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2025
Apr. 18, 2026
Income (Loss) from Equity Method Investments           $ (36,716)   $ (24,000) $ (288,560) $ 17,438      
Proceeds from Issuance of Debt                 0 10,000,000      
Gain (Loss) on Investments           (1,031,371)   0 (1,031,371) 0      
Research and Development Company [Member]                          
Income (Loss) from Equity Method Investments         $ 1,290,614 24,000   $ 24,000 48,000 17,438      
Payable, Investment, Purchase $ 1,314,205         1,314,205     1,314,205        
Payments to Acquire Equity Method Investments                 $ 0 0      
Gain (Loss) on Investments           $ (1,031,371)              
Conversion of Sierra Springs Advances Into Sierra Springs Common Stock [Member]                          
Payments to Acquire Investments 13,640,000 $ 237,415   $ 9,400,000     $ 5,750,000            
Debt Conversion, Original Debt, Amount $ 13,640,000 $ 237,415 $ 15,150,000                    
Debt Conversion, Converted Instrument, Shares Issued (in shares) 20,984,615 365,255 23,307,692                    
Debt Conversion, Conversion Rate, Price Per Share (in dollars per share) $ 0.65 $ 0.65 $ 0.65                    
Sierra Springs Opportunity Fund, Inc. (SSOF) [Member]                          
Payments to Acquire Investments                       $ 8,500,000  
Investment Owned, Balance, Shares (in shares) 55,893,673     11,236,111   55,893,673     55,893,673   11,236,111 11,236,111  
Subsidiary, Ownership Percentage, Noncontrolling Owner 47.63%     16.99%   47.63%     47.63%   16.99% 16.99%  
Income (Loss) from Equity Method Investments           $ 12,716     $ 240,560        
Proceeds from Issuance of Debt             5,750,000       $ 9,400,000    
Investment, Maximum Exposure to Loss $ 49,011,855         $ 49,011,855     $ 49,011,855        
Green Li-ion Pte, Ltd. [Member]                          
Investment Owned, Balance, Shares (in shares) 35,662     35,662   35,662     35,662   35,662 35,662  
Subsidiary, Ownership Percentage, Noncontrolling Owner 11.98%     13.34%   11.98%     11.98%   13.34% 13.34% 11.98%
Unrealized Gain (Loss) on Investments             $ 0     $ 0