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
3 Months Ended 12 Months Ended
Mar. 31, 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 10 months 2 days 1 year 6 months 10 days
Granted, number of shares (in shares) 1,032,200  
Granted, weighted average unit price (in dollars per share) $ 0.88  
Granted, weighted average remaining contractual term (Year) 1 month 2 days  
Vested, number of shares (in shares) (1,082,159)  
Vested, weighted average unit price (in dollars per share) $ 0.96  
Vested, weighted average remaining contractual term (Year) 10 days  
Forfeited, number of shares (in shares) (178,103)  
Forfeited, weighted average unit price (in dollars per share) $ 1.45  
Forfeited, weighted average remaining contractual term (Year) 1 year 5 months 23 days  
Outstanding balance, number of shares (in shares) 426,078 654,140
Outstanding balance, weighted average unit price (in dollars per share) $ 1.5 $ 1.57