Annual report [Section 13 and 15(d), not S-K Item 405]

Note 11 - Stock Based Compensation (Details Textual)

v3.25.1
Note 11 - Stock Based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Dec. 19, 2024
Jun. 15, 2023
May 24, 2023
Jun. 30, 2023
Jan. 31, 2022
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2024
Dec. 31, 2023
Employee Stock Ownership Plan (ESOP), Shares in ESOP, Total (in shares)         431,836 430,239 431,836 430,239 431,836
Employee Stock Ownership Plan (ESOP), Weighted Average Purchase Price of Shares Purchased (in dollars per share)         $ 10        
Employee Stock Ownership Plan (ESOP), Vesting Percentage           100.00%   100.00%  
Employee Stock Ownership Plan (ESOP), Award Vesting, Period of Service (Year)               5 years  
Employee Stock Ownership Plan (ESOP), Compensation Expense               $ 214,000 $ 199,000
Share-Based Payment Arrangement, Expense, Tax Benefit               767,000 123,000
Share-Based Payment Arrangement, Expense               767,000 519,000
Director [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares (in shares)           18,400 23,000    
Restricted Stock [Member] | Director [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)           7,360 9,200    
Share-Based Payment Arrangement, Expense           $ 60,000 $ 77,000    
Share-Based Payment Arrangement, Option [Member]                  
Share-Based Payment Arrangement, Expense               $ 373,000 $ 252,000
Share-Based Payment Arrangement, Option [Member] | Director [Member]                  
Share-Based Payment Arrangement, Expense           57,000 $ 73,000    
The 2023 Equity Plan [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)     755,714            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)       465,500       58,000 465,500
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)               $ 4.38 $ 3.56
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount           $ 1,300,000   $ 1,300,000  
The 2023 Equity Plan [Member] | Restricted Stock [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)     215,918            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   5 years           5 years  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)           12,018   12,018  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)               3 years 7 months 6 days  
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) 16,700 187,200              
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Total Grant Date Fair Value $ 189,000 $ 1,800,000              
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount           $ 1,300,000   $ 1,300,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)               42,960 9,200
The 2023 Equity Plan [Member] | Share-Based Payment Arrangement, Option [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)     539,796            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)     5 years            
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)     10 years            
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)           16,296   16,296  
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year)               6 years 6 months 6 years 6 months
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate               4.38% 3.82%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate               28.00% 29.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate               0.00% 0.00%
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)               3 years 7 months 6 days  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares (in shares)           393,600   393,600  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Year)               8 years 7 months 6 days  
ESOP Loan [Member]                  
Debt Instrument, Term (Month)         25 years        
Employee Stock Ownership Plan (ESOP), Debt Structure, Direct Loan, Amount         $ 4,300,000        
Debt Instrument, Interest Rate, Stated Percentage         3.25%