v3.26.1
Note 7 - Subordinated Debentures and Other Borrowing Arrangements (Details Textual) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Dec. 20, 2019
Jun. 30, 2026
Dec. 31, 2025
Federal Funds Purchased, Average Rate Paid   3.75% 3.75%
Discount Window [Member]      
Federal Reserve Bank Borrowings, Outstanding   $ 0 $ 0
Federal Reserve Bank [Member] | Discount Window [Member]      
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged   977,500 853,900
Federal Home Loan Bank of San Francisco [Member]      
Advance from Federal Home Loan Bank   0  
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available   550,700 530,000
Federal Lines of Credit [Member]      
Line of Credit Facility, Maximum Borrowing Capacity   229,000 206,000
Long-Term Line of Credit   $ 0  
Federal Funds Purchased     $ 60,000
Subordinated Debt [Member]      
Debt Instrument, Face Amount $ 22,000    
Debt Instrument, Term (Year) 10 years    
Debt Instrument, Interest Rate, Stated Percentage 5.00%    
Debt Instrument, Basis Spread on Variable Rate 3.595%    
Debt Instrument, Interest Rate, Effective Percentage   7.33%