Note 10 - Marketable Securities (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Proceeds from Sale and Maturity of Marketable Securities			$ 7,301,264	$ 775,000
Debt and Equity Securities, Realized Gain (Loss)	$ (0)	$ (0)	$ (1,507)	$ (0)