Quarterly report pursuant to Section 13 or 15(d)

Note 13 - Employee Stock Plans (Details Textual)

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Note 13 - Employee Stock Plans (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Feb. 01, 2024
May 31, 2010
Share-Based Payment Arrangement, Expense $ 355 $ 957    
Restricted Stock Units (RSUs) [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) $ 28.82      
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] | Performance Shares [Member]        
Share-Based Payment Arrangement, Expense $ 1,069 417    
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) $ 26.6      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 924      
The 2010 Stock Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]        
Share-Based Payment Arrangement, Expense 1,424 1,374    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount 4,998      
The 2024 Stock Incentive Plan [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)     1,227,660  
The 2024 Stock Incentive Plan [Member] | Equity Awards [Member]        
Share-Based Payment Arrangement, Expense $ 314 $ 1,020    
The 2024 Stock Incentive Plan [Member] | Minimum [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period (Year) 10 years