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Note 14 - Equity Incentive Plan - Assumptions Used to Estimate Fair Value of Stock Options and Stock Appreciation Rights (Details) - $ / shares
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Risk-free interest rate 0.00% 0.00% 0.00%
Expected stock price volatility 0.00% 0.00% 0.00%
Expected life of options (in years) (Year) 4 years 6 months 4 years 6 months 4 years 6 months
Expected dividend yield 0.00% 0.00% 0.00%
Share-based Compensation Arrangement By Share based Payment Award Fair Value Per Option $ 5.13 $ 10.52 $ 11.45
Minimum [Member]      
Risk-free interest rate 3.71% 3.48% 3.52%
Expected stock price volatility 41.64% 41.54% 48.19%
Maximum [Member]      
Risk-free interest rate 3.99% 4.62% 4.64%
Expected stock price volatility 45.68% 48.19% 49.44%