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Note B - Securities (Details Textual)
12 Months Ended
Dec. 31, 2022
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2021
USD ($)
Proceeds from Sale of Debt Securities, Available-for-Sale $ 0 $ 29,457,362  
Debt and Equity Securities, Realized Gain (Loss), Total   $ 539,023  
Asset Pledged as Collateral [Member] | Public Deposits, Federal Funds Purchased and Other Balances Required by Law [Member]      
Financial Instruments, Owned, at Fair Value, Total $ 398,673,043   $ 229,092,900
US Treasury Securities [Member]      
Securities In Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 33    
Securities, Qualitative Disclosure, Number of Positions 34    
Collateralized Mortgage-Backed Securities [Member]      
Securities In Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 44    
Securities, Qualitative Disclosure, Number of Positions 48    
Collateralized Mortgage Obligations [Member]      
Securities In Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 34    
Securities, Qualitative Disclosure, Number of Positions 34    
US States and Political Subdivisions Debt Securities [Member]      
Securities In Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 177    
Securities, Qualitative Disclosure, Number of Positions 196