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%

Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund.

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+ Details

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References + Details