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Note 9 - Fair Value - Fair Values for Investments (Details)	3 Months Ended
	Mar. 31, 2023 USD ($)
Realized gains (losses)	$ 188,525
Changes in fair values	2,683,694
Reported Value Measurement [Member]
Carrying amount	66,141,951
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Carrying amount	$ 66,141,951

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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+ References

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