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Note 13 - Stock-based Compensation - Assumptions (Details)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Risk-free interest rate 4.60%  
Dividend yield 0.00% 0.00%
Minimum [Member]    
Risk-free interest rate   1.90%
Expected term (Year) 3 years 3 months 3 years 3 months
Expected volatility 33.50% 45.80%
Maximum [Member]    
Risk-free interest rate   4.30%
Expected term (Year) 3 years 6 months 6 years
Expected volatility 36.70% 48.10%