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Note 9 - Fair Value - Fair Values for Investments (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Realized gains (losses)	$ 4,159	$ 1,063,730
Changes in fair values	266,628	1,029,051
Reported Value Measurement [Member]
Carrying amount	21,930,778	13,370,229
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Carrying amount	$ 21,930,778	$ 13,370,229

X

- Definition

Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

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Amount of realized gain (loss) on investment in debt and equity securities.

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