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Note 7 - Commitments and Contingencies (Details Textual) - USD ($) | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability | $ 143,466,000 | $ 132,344,000
Off-Balance-Sheet, Credit Loss, Liability | 1,150,000 |
Financial Standby Letter of Credit [Member] |  |
Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability | 0 | 0
Performance Guarantee [Member] |  |
Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability | 1,038,000 | 1,038,000
Unfunded Loan Commitment [Member] |  |
Off-Balance-Sheet, Credit Loss, Liability |  | 1,200,000
Derivative [Member] |  |
Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability | $ 0 | $ 0

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