v3.26.1
Note 3 - Net Loss Per Share - Antidilutive Securities (Details) - shares
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Antidilutive securities (in shares) 5,502,166 2,417,102
Share-Based Payment Arrangement, Option [Member]    
Antidilutive securities (in shares) 158,098 127,972
Warrant [Member]    
Antidilutive securities (in shares) 5,344,068 2,289,130