Quarterly report [Sections 13 or 15(d)]

Note 11 - Stock Based Compensation (Details Textual)

v3.25.3
Note 11 - Stock Based Compensation (Details Textual) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
May 24, 2023
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Employee Stock Ownership Plan (ESOP), Shares in ESOP, Total (in shares)   428,211 431,836 428,211 431,836     431,836
Employee Stock Ownership Plan (ESOP), Weighted Average Purchase Price of Shares Purchased (in dollars per share)           $ 10    
Employee Stock Ownership Plan (ESOP), Shares Contributed to ESOP (in shares)       0        
Employee Stock Ownership Plan (ESOP), Compensation Expense   $ 63,000 $ 52,000 $ 191,000 $ 154,000      
Share Price (in dollars per share)   $ 11.54 $ 10.35 $ 11.54 $ 10.35      
The 2023 Equity Plan [Member]                
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) 755,714              
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount   $ 1,000,000   $ 1,000,000        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares (in shares)   490,500   490,500        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Year)       7 years 10 months 24 days        
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        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)   14,018   14,018        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)       2 years 10 months 24 days        
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount   $ 1,000,000   $ 1,000,000        
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)             26,296  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)       2 years 10 months 24 days