v3.26.1
Note 4 - Investment Securities (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Proceeds from Sale of Debt Securities, Available-for-Sale $ 0 $ 0 $ 50,481 $ 0  
Debt Securities, Trading, and Equity Securities, FV-NI $ 0   $ 0   $ 0
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions 774   774    
Debt Securities, Available-for-Sale, Unrealized Loss Position, Percent of Securities Cost Basis 12.00%   12.00%    
Debt Securities, Available-for-Sale, Unrealized Loss Position, Percent of Amortized Cost of Investment Securities Portfolio 10.60%   10.60%    
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions 597   597    
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss $ 2,600   $ 2,600   $ 2,200
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Interest Receivable   Interest Receivable   Interest Receivable
Marketable Securities and Mutual Funds [Member]          
Equity Securities, FV-NI $ 4,100   $ 4,100   $ 3,400
Equity Securities, Held In Correspondent Banks [Member]          
Equity Securities, FV-NI 23,800   23,800   17,000
Asset Not Pledged as Collateral and Asset Pledged as Collateral without Right [Member]          
Debt Securities $ 125,200   125,200   $ 75,600
W F B [Member]          
Proceeds from Sale of Debt Securities, Available-for-Sale     $ 50,500