Quarterly report [Sections 13 or 15(d)]

Note 13 - Employee Stock Plans (Details Textual)

v3.25.1
Note 13 - Employee Stock Plans (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Feb. 29, 2024
May 31, 2010
Share-Based Payment Arrangement, Expense $ 2,150 $ 355      
Restricted Stock Units (RSUs) [Member]          
Share-Based Payment Arrangement, Accelerated Cost $ 158 314      
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) $ 27.08        
The 2010 Stock Incentive Plan [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)         2,130,000
The 2010 Stock Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]          
Share-Based Payment Arrangement, Expense $ 1,589 $ 1,424      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 6,663        
The 2010 Stock Incentive Plan [Member] | Performance Shares [Member]          
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) $ 29.13 $ 29.39 $ 26.16    
Share-Based Payment Arrangement, Expense $ 561        
Share-Based Payment Arrangement, Reversal of Expense   $ 1,069      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 1,362        
The 2024 Stock Incentive Plan [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)       1,277,660  
The 2024 Stock Incentive Plan [Member] | Minimum [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period (Year) 10 years