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Note 3 - Investments - Summary of Investments (Details) - USD ($) | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Equity Method Investments | $ 38,202,527 | $ 21,304,371
Alternative Measurement Method Investments | 18,201,065 | 18,201,065
Total Investments | 56,403,592 | 39,505,436
Sierra Springs Opportunity Fund, Inc. (SSOF) [Member] |  |
Equity Method Investments | $ 37,147,156 | $ 20,225,000
Ownership percentage | 40.66% | 16.99%
Green Li-ion Pte, Ltd. [Member] |  |
Ownership percentage | 13.34% | 13.34%
Alternative Measurement Method Investments | $ 18,201,065 | $ 18,201,065
Research and Development Company [Member] |  |
Equity Method Investments | $ 1,055,371 | $ 1,079,371
Ownership percentage | 40.00% | 40.00%

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