Annual report [Section 13 and 15(d), not S-K Item 405]

Note 8 - Stock-based Incentive Plans - Stock Option Activity (Details)

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Note 8 - Stock-based Incentive Plans - Stock Option Activity (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Outstanding, number of shares (in shares) 1,000  
Outstanding, weighted average exercise price per share (in dollars per share) $ 7,533.48  
Outstanding, Aggregate Intrinsic Value $ 0 $ 0
Granted, number of shares (in shares) 82,000  
Granted, weighted average exercise price per share (in dollars per share) $ 12.6  
Exercised, number of shares (in shares) 0  
Expired, number of shares (in shares) 0  
Expired, weighted average exercise price per share (in dollars per share) $ 0  
Canceled / forfeited, number of shares (in shares) (3,000)  
Canceled / forfeited, weighted average exercise price per share (in dollars per share) $ 1,854.96  
Canceled / forfeited, number of shares $ 0  
Outstanding, number of shares (in shares) 80,000  
Outstanding, weighted average exercise price per share (in dollars per share) $ 12.36  
Outstanding, Weighted Average Remaining Contractual Term (Year) 9 years 10 months 20 days  
Vested and exercisable, number of shares (in shares) 1,000  
Vested and exercisable, weighted average exercise price per share (in dollars per share) $ 40.56  
Vested and exercisable, Weighted Average Remaining Contractual Term (Year) 9 years 10 months 20 days  
Vested and exercisable, Aggregate Intrinsic Value $ 0