Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Stockholders' Equity - Summary of Stock Option Activity (Details)

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Note 7 - Stockholders' Equity - Summary of Stock Option Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Outstanding, options (in shares) 22,474    
Outstanding, weighted average exercise price (in dollars per share) $ 85.5    
Outstanding, aggregate intrinsic value     $ 0
Granted, options (in shares) 0 0  
Granted, weighted average exercise price (in dollars per share) $ 0    
Exercised, options (in shares) 0    
Exercised, weighted average exercise price (in dollars per share) $ 0    
Cancelled/forfeited, options (in shares) 0    
Cancelled/forfeited, weighted average exercise price (in dollars per share) $ 0    
Expired, options (in shares) 0    
Expired, weighted average exercise price (in dollars per share) $ 0    
Outstanding, options (in shares) 22,474    
Outstanding, weighted average exercise price (in dollars per share) $ 85.5    
Outstanding, remaining term (Year) 9 years 2 months 12 days    
Expected to vest, options (in shares) 16,304    
Expected to vest, weighted average exercise price (in dollars per share) $ 85.5    
Expected to vest, remaining term (Year) 9 years 2 months 12 days    
Expected to vest, aggregate intrinsic value $ 0    
Exercisable, options (in shares) 6,170    
Exercisable, weighted average exercise price (in dollars per share) $ 85.5    
Exercisable, remaining term (Year) 9 years 2 months 12 days    
Exercisable, aggregate intrinsic value $ 0