v3.26.1
Note N - Stock Options - Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Outstanding (in shares) 300 926  
Outstanding, weighted average exercise price (in dollars per share) $ 1,973.1 $ 3,112  
Outstanding, weighted average remaining life (Year) 8 months 8 days 1 year 1 month 20 days 11 months 15 days
Outstanding, aggregate intrinsic value $ 0 $ 0 $ 0
Granted (in shares) 0 0  
Granted, weighted average exercise price (in dollars per share) $ 0 $ 0  
Exercised (in shares) 0 0  
Exercised, weighted average exercise price (in dollars per share) $ 0 $ 0  
Forfeited (in shares) 0 (35)  
Forfeited, weighted average exercise price (in dollars per share) $ 0 $ 936  
Expired (in shares) (104) (591)  
Expired, weighted average exercise price (in dollars per share) $ 2,822.4 $ 3,805.1  
Outstanding (in shares) 196 300 926
Outstanding, weighted average exercise price (in dollars per share) $ 1,453.15 $ 1,973.1 $ 3,112
Vested or expected to vest (in shares) 0    
Vested or expected to vest, weighted average exercise price (in dollars per share) $ 0    
Vested or expected to vest, aggregate intrinsic value $ 0    
Exercisable (in shares) 0    
Exercisable, aggregate intrinsic value $ 0    
The 2015 Equity Incentive Plan [Member]      
Outstanding (in shares) 300 454  
Granted (in shares) 0 0  
Exercised (in shares) 0 0  
Forfeited (in shares) 0 (35)  
Expired (in shares) (104) (119)  
Outstanding (in shares) 196 300 454
Non Plan [Member]      
Outstanding (in shares) 0 472  
Granted (in shares) 0 0  
Exercised (in shares) 0 0  
Forfeited (in shares) 0 0  
Expired (in shares) 0 (472)  
Outstanding (in shares) 0 0 472