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Note 11 - Share-based Compensation (Details Textual)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2025
USD ($)
$ / shares
shares
Mar. 31, 2024
USD ($)
Dec. 31, 2024
Share-Based Payment Arrangement, Expense | $ $ 1.4 $ 0.9  
Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Nonemployee [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) 73,364    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares $ 24.54    
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 1 year    
Equivalent Stock Units (ESUs) [Member] | Share-Based Payment Arrangement, Employee [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) 47,330    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares $ 24.54    
Performance Stock Units (PSUs) [Member] | Share-Based Payment Arrangement, Employee [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) 32,507    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares $ 24.29    
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 3 years    
Performance Stock Units (PSUs) [Member] | Share-Based Payment Arrangement, Employee [Member] | March 2025 [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Percentile Relative TSR, Start Earning     25
Share-Based Compensation Arrangement by Share-Based Payment Award, Percentile Relative TSR, Earning 100 Percent     50
Share-Based Compensation Arrangement by Share-Based Payment Award, Percentile Relative TSR, Earning 125 Percent     75
Performance Stock Units (PSUs) [Member] | Share-Based Payment Arrangement, Employee [Member] | March 2025 [Member] | Minimum [Member]      
Share-based Compensation Award by Share-based Payment Arrangement, Number of Shares Upon Settlement (in shares) 0    
Performance Stock Units (PSUs) [Member] | Share-Based Payment Arrangement, Employee [Member] | March 2025 [Member] | Maximum [Member]      
Share-based Compensation Award by Share-based Payment Arrangement, Number of Shares Upon Settlement (in shares) 1.25