Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Employee and Director Benefits (Details Textual)

v3.23.3
Note 7 - Employee and Director Benefits (Details Textual) - USD ($)
3 Months Ended 9 Months Ended 48 Months Ended
Dec. 31, 2014
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Share-Based Payment Arrangement, Expense   $ 929,000 $ 804,000 $ 2,700,000 $ 2,400,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)           0
Share-Based Payment Arrangement, Option [Member]            
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   77,000   $ 77,000   $ 77,000
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   4,600,000   $ 4,600,000   4,600,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)       2 years    
Performance Shares [Member]            
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 895,000   $ 895,000   $ 895,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)       1 year 3 months 18 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