v3.23.1
Note 16 - Stockholders Equity - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Outstanding, number of shares (in shares) 5,977,179  
Outstanding, weighted average exercise price (in dollars per share) $ 3.72  
Outstanding, weighted average remaining contractual term (Year) 8 years 2 months 23 days 7 years 2 months 12 days
Outstanding, aggregate intrinsic value $ 209 $ 136
Options granted, number of shares (in shares) 8,238,250  
Options granted, weighted average exercise price (in dollars per share) $ 0.62  
Options granted, aggregate intrinsic value $ 209  
Options exercised, number of shares (in shares) (16,464)  
Options exercised, weighted average exercise price (in dollars per share) $ 1.59  
Options exercised, aggregate intrinsic value $ 0 $ 92
Options forfeited/cancelled, number of shares (in shares) (1,457,571)  
Options forfeited/cancelled, weighted average exercise price (in dollars per share) $ 4.15  
Options forfeited/cancelled, aggregate intrinsic value (in dollars per share) $ 0  
Outstanding, number of shares (in shares) 12,741,394 5,977,179
Outstanding, weighted average exercise price (in dollars per share) $ 1.67 $ 3.72
Exercisable, number of shares (in shares) 3,376,223  
Exercisable, weighted average exercise price (in dollars per share) $ 3.78  
Exercisable, weighted average remaining contractual term (Year) 5 years 4 months 28 days  
Exercisable, aggregate intrinsic value $ 0  
Expected to vest, number of shares (in shares) 9,365,171  
Expected to vest, weighted average exercise price (in dollars per share) $ 0.91  
Expected to vest, weighted average remaining contractual term (Year) 9 years 2 months 26 days  
Expected to vest, aggregate intrinsic value $ 209