Quarterly report [Sections 13 or 15(d)]

Note 13 - Stock-based Compensation - Schedule of Stock Option Activity (Details)

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Note 13 - Stock-based Compensation - Schedule of Stock Option Activity (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Outstanding, shares (in shares) 1,500 1,500 1,500  
Outstanding, Weighted Average Exercise Price (in dollars per share) $ 44.6 $ 44.6 $ 44.6  
Outstanding, Weighted average remaining contractual term (Year) 2 years 10 months 24 days 3 years 10 months 24 days 3 years 10 months 24 days 4 years 2 months 12 days
Outstanding, Intrinsic Value $ 0 $ 0 $ 0 $ 0
Granted, shares (in shares) 0 0    
Granted, Weighted Average Exercise Price (in dollars per share) $ 0 $ 0    
Exercised, shares (in shares) 0 0    
Exercised, Weighted Average Exercise Price (in dollars per share) $ 0 $ 0    
Forfeited, shares (in shares) 0 0    
Forfeited, Weighted Average Exercise Price (in dollars per share) $ 0 $ 0    
Outstanding, shares (in shares) 1,500 1,500 1,500 1,500
Outstanding, Weighted Average Exercise Price (in dollars per share) $ 44.6 $ 44.6 $ 44.6 $ 44.6
Exercisable, shares (in shares) 1,500 1,500    
Exercisable, Weighted Average Exercise Price (in dollars per share) $ 44.6 $ 44.6    
Exercisable, Weighted average remaining contractual term (Year) 2 years 10 months 24 days 3 years 10 months 24 days    
Exercisable, Intrinsic Value $ 0 $ 0