Note 14 - Common Stock (Tables)

3 Months Ended

Mar. 31, 2026

Notes Tables

Summary of Reserved Shares of Stock [Table Text Block]

		*March 31,*				*December 31,*
		*2026*				*2025*
		(unaudited)
Warrants to purchase common stock			8,950,562				8,513,550
Options issued and outstanding			321,650				392,494
Restricted stock units outstanding			32,631				50,736
Shares available for future incentive plan grants			297,751				101,105
Shares available for the conversion of Series A Preferred Stock			237,200				237,200
Shares available for the conversion of Series B Preferred Stock			2,748,549				1,610,180
Shares available for the conversion of Series C Preferred Stock			15,996,346				9,371,123
Total			28,584,689				20,276,388