Note 9 - Marketable Securities (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Proceeds from Sale and Maturity of Marketable Securities			$ 1,065,000	$ 5,255,145
Debt and Equity Securities, Realized Gain (Loss)	$ 0	$ 0	$ 0	$ 433,769