v3.26.1
Note 7 - Commitments and Contingencies (Details Textual)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Jun. 29, 2026
USD ($)
Mar. 31, 2026
USD ($)
Unused Commitments to Extend Credit $ 262,000,000   $ 262,000,000   $ 189,800,000    
Off-Balance-Sheet, Credit Loss, Liability 762,300   762,300   829,100    
Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) 0 $ 306,000 66,800 $ 439,000      
Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability 262,000,000   262,000,000   189,800,000    
Deposits 1,759,603,000   1,759,603,000   1,758,669,000    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,031,361,000   2,031,361,000   2,035,227,000    
Cannabis-related Loan [Member]              
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 50,900,000   $ 50,900,000   $ 47,000,000    
Customer Concentration Risk [Member] | Deposits [Member]              
Number of Major Customers     2   2    
Cannabis Customers [Member]              
Deposits 61,100,000   $ 61,100,000   $ 61,900,000    
Cannabis Customers [Member] | Customer Concentration Risk [Member] | Deposits [Member]              
Concentration Risk, Percentage     3.50%   3.50%    
Two Customers [Member] | Customer Concentration Risk [Member] | Deposits [Member]              
Concentration Risk, Percentage     27.10%   30.70%    
Standby Letters of Credit [Member]              
Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability $ 600,000   $ 600,000   $ 600,000    
Municipal Letter of Credit [Member]              
Line of Credit Facility, Maximum Borrowing Capacity           $ 110,000,000  
Short-Term Debt             $ 0