Note 13 - Common Stock (Tables)

12 Months Ended

Dec. 31, 2025

Notes Tables

Summary of Reserved Shares of Stock [Table Text Block]

		*2025*				*2024*
Warrants to purchase common stock			8,513,550				707,234
Options issued and outstanding			392,494				8,868
Restricted stock units outstanding			50,736				—
Shares available for future incentive plan grants			101,105				5,555
Shares available for the conversion of Series A Preferred Stock			237,200				—
Shares available for the conversion of Series B Preferred Stock			1,610,180				—
Shares available for the conversion of Series C Preferred Stock			9,371,123				—
Total			20,276,388				721,657