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Note 9 - Fair Value - Fair Values for Investments (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Realized gains (losses)	$ 18,016	$ 740,892
Changes in fair values	130,327	4,411,489
Reported Value Measurement [Member]
Carrying amount	15,949,009	49,322,696
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Carrying amount	$ 15,949,009	$ 49,322,696

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- 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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