Quarterly report [Sections 13 or 15(d)]

Note 7 - Employee and Director Benefits (Details Textual)

v3.26.3
Note 7 - Employee and Director Benefits (Details Textual) - USD ($)
shares in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2014
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Share-Based Payment Arrangement, Expense   $ 950,000 $ 629,000 $ 2,500,000 $ 2,300,000
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   $ 6,200,000   $ 6,200,000  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition       2 years 4 months 24 days  
Performance Shares [Member]          
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 1,700,000   $ 1,700,000  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition       2 years 4 months 24 days  
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period       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 11,100        
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period 10 years