v3.26.1
Note 9 - Equity Incentive Plan - Summary of RSU activity (Details) - The 2017 Equity Award Plan [Member] - Restricted Stock Units (RSUs) [Member] - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Outstanding balance, number of shares (in shares) 654,140  
Outstanding balance, weighted average unit price (in dollars per share) $ 1.57  
Outstanding, weighted average remaining contractual term (Year) 1 year 4 months 24 days 1 year 6 months 10 days
Granted, number of shares (in shares) 3,213,833  
Granted, weighted average unit price (in dollars per share) $ 0.87  
Granted, weighted average remaining contractual term (Year) 11 months 23 days  
Vested, number of shares (in shares) (1,111,108)  
Vested, weighted average unit price (in dollars per share) $ 0.97  
Vested, weighted average remaining contractual term (Year) 18 days  
Forfeited, number of shares (in shares) (375,047)  
Forfeited, weighted average unit price (in dollars per share) $ 1.33  
Forfeited, weighted average remaining contractual term (Year) 1 year 5 months 23 days  
Outstanding balance, number of shares (in shares) 2,381,818 654,140
Outstanding balance, weighted average unit price (in dollars per share) $ 0.95 $ 1.57