v3.26.1
Note 2 - Loans and Allowance for Credit Losses - Allowance for Credit Losses on Unfunded Commitments (Details) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]      
Balance $ 9,892,000 $ 10,262,000 $ 10,262,000
Recovery of credit losses 260,000 322,000 63,000
Balance 10,047,000 10,422,000 9,892,000
Unfunded Loan Commitment [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Balance 298,000 251,000 251,000
Recovery of credit losses (16,000) (10,000)  
Balance $ 282,000 $ 241 $ 298,000