v3.26.1
Note 3 - Net Loss Per Share - Antidilutive Securities (Details) - shares
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Antidilutive securities (in shares) 19,246,501 2,453,803
Share-Based Payment Arrangement, Option [Member]    
Antidilutive securities (in shares) 569,098 172,710
Warrant [Member]    
Antidilutive securities (in shares) 18,677,403 2,281,093