Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Employee and Director Benefits (Details Textual)

v3.24.1.u1
Note 7 - Employee and Director Benefits (Details Textual) - USD ($)
3 Months Ended
Dec. 31, 2014
Mar. 31, 2024
Mar. 31, 2023
Share-Based Payment Arrangement, Expense   $ 958,000 $ 808,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)   0 0
Share-Based Payment Arrangement, Option [Member]      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 35,000  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)   6 months  
Restricted Stock [Member]      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 5,300,000  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)   1 year 9 months 18 days  
Performance Shares [Member]      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 1,200,000  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)   2 years 1 month 6 days  
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 (in shares) 5,550,000    
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) 10 years