Note 13 - Fair Value Measurements - Schedule of Fair Value Assets Measured on Recurring Basis (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Number of shares owned (in shares)	2,421,180	2,421,180
Quoted market price (in dollars per share)	$ 0.06789	$ 0.04429
Fair value	$ 164,375	$ 107,234