Quarterly report [Sections 13 or 15(d)]

Note 7 - Employee and Director Benefits (Details Textual)

v3.25.2
Note 7 - Employee and Director Benefits (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Dec. 31, 2014
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Share-Based Payment Arrangement, Expense   $ 836,000 $ 879,000 $ 1,700,000 $ 1,800,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares   0   0  
Restricted Stock [Member]          
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 6,100,000   $ 6,100,000  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)       2 years 6 months  
Performance Shares [Member]          
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 1,100,000   $ 1,100,000  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)       1 year 6 months  
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)       3 years  
Performance Shares [Member] | Minimum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Shares Vested Upon Certain Performance Metrics, Percentage       0.00%  
Performance Shares [Member] | Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Shares Vested Upon Certain Performance Metrics, Percentage       150.00%  
The 2009 Plan [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized 5,550,000        
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period 10 years