v3.26.1
Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
Jun. 30, 2026
Dec. 31, 2025
Preferred stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Preferred stock, authorized (in shares) 50,000,000 50,000,000
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, authorized (in shares) 100,000,000 100,000,000
Common stock, issued (in shares) 24,243,646 16,067,435
Common stock, outstanding (in shares) 24,243,646 16,067,435
Convertible Series D Preferred Stock [Member]    
Preferred stock, authorized (in shares) 5,000,000 5,000,000
Preferred stock, issued (in shares) 3,825 3,825
Preferred stock, outstanding (in shares) 3,825 3,825
Preferred stock, liquidation value (in dollars per share) $ 0.0001 $ 0.0001
Convertible Series D-1 Preferred Stock [Member]    
Preferred stock, authorized (in shares) 5,000,000 5,000,000
Preferred stock, issued (in shares) 834 834
Preferred stock, outstanding (in shares) 834 834
Preferred stock, liquidation value (in dollars per share) $ 0.0001 $ 0.0001