Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Securities (Details Textual)

v3.23.2
Note 2 - Securities (Details Textual)
3 Months Ended 6 Months Ended
Jan. 01, 2022
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
Proceeds From Sale Of Securities   $ 0 $ 0 $ 0 $ 0  
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions   454   454    
Debt Securities, Available-for-Sale, Unrealized Loss Position   $ 504,584,000   $ 504,584,000   $ 464,449,000
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss   $ 39,058,000   $ 39,058,000   40,143,000
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions   66   66    
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value   $ 296,110,000   $ 296,110,000   317,022,000
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss   15,245,000   15,245,000   16,530,000
Debt Securities, Available-for-Sale, Allowance for Credit Loss   0   0    
Debt Securities, Held-to-Maturity, Allowance for Credit Loss   0   0    
Asset Pledged as Collateral [Member] | Public Deposits Letters Of Credit And For Other Purposes [Member]            
Debt Securities   3,600,000   3,600,000   3,500,000
US Treasury Securities [Member]            
Number of Securities Reclassified 10          
Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Amortized Cost $ 123,500,000          
Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Unrealized Gain $ 113,000          
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value   238,104,000   238,104,000   237,630,000
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss   $ 13,162,000   $ 13,162,000   $ 13,677,000