Note 10 - Warrants (Details Textual) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Class of Warrant or Right, Outstanding (in shares)	4,587,002	4,587,002
Class of Warrant or Right, Weighted Average Remaining Contractual Term (Year)	3 years 10 months 9 days	4 years 1 month 9 days
Weighted Average [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 4.9	$ 4.9