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Note 8 - Stock-based Compensation (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)     0  
Deferred Compensation Plan for Directors [Member]        
Deferred Compensation Arrangement with Individual, Compensation Expense     $ 0 $ 0
The 2014 Long-term Incentive Plan [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) 0   0  
The 2014 Long-term Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year) 10 years      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) 0      
The 2014 Long-term Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Tranche One [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 50.00%      
The 2014 Long-term Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Tranche Two [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 25.00%      
The 2014 Long-term Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Tranche Three [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 25.00%      
The 2014 Long-term Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 972   $ 972  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)     1 year 4 months 17 days  
The 2014 Long-term Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 2 years      
The 2014 Long-term Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 4 years      
The 2014 Long-term Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Tranche One, If Look-Back RSUs Awarded [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage     33.33%  
The 2014 Long-term Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Tranche Two, If Look-Back RSUs Awarded [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage     33.33%  
The 2014 Long-term Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Tranche Three, If Look-Back RSUs Awarded [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage     33.33%  
The 2014 Long-term Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Vesting If Total Revenue RSU, New Business Growth RSU, or Operating Income Growth RSU Awarded [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage     100.00%  
The 2014 Long-term Incentive Plan [Member] | Restricted Stock [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value     $ 462  
The 2024 Plan [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) 2,600,000   2,600,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) 2,600,000   2,600,000  
Share-Based Payment Arrangement, Expense, Tax Benefit $ 0 $ 0 $ 0 $ 0