v3.26.1
Note 7 - Goodwill and Other Intangibles - Changes in Goodwill and Other Intangibles (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Balance $ 6,978,000  
Balance 7,026,000  
Amortization, other intangible (172,100) $ (77,400)
Amortization (8,000)  
Balance 6,978,000 6,978,000
Balance 7,018,000 7,026,000
Core Deposits [Member]    
Balance, other intangible 48,000  
Amortization, other intangible (8,000)  
Balance, other intangible $ 40,000 $ 48,000