Note 1 - Description of Business and Summary of Significant Accounting Policies - Summary of Deferred Revenue (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Deferred revenues, beginning of period	$ 0	$ 17,647
Deferred revenues, end of period	0	0
Revenue recognized in the period from amounts included in deferred revenues at the beginning of the period	$ 0	$ 17,647