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Note 4 - Fair Value Measurements - Fair Value Quantitative Information (Details) - Fair Value, Nonrecurring [Member] $ in Thousands | Jun. 30, 2025 USD ($) | Dec. 31, 2024 USD ($)
--- | --- | ---
Collateral dependent loans, fair value | $ 3,766 | $ 385
Fair Value, Inputs, Level 3 [Member] |  |
Collateral dependent loans, fair value | 3,766 | 385
Impaired Loan [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] |  |
Collateral dependent loans, fair value | $ 3,766 | $ 385
Impaired Loan [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Minimum [Member] | Measurement Input Valuation Adjustments [Member] |  |
Collateral dependent loans | 0 | 0
Impaired Loan [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Maximum [Member] |  |
Collateral dependent loans | 0.25 |
Impaired Loan [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Maximum [Member] | Measurement Input Valuation Adjustments [Member] |  |
Collateral dependent loans |  | 0.25

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