Note 20 - Fair Value Measurements and Fair Values of Financial Instruments - Additional Information on Assets Measured at Fair Value on a Nonrecurring Basis (Details) |
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
USD ($)
|
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|---|---|---|---|---|---|---|
| Other real estate owned, net | $ 360,000 | $ 0 | ||||
| Appraisal of Collateral [Member] | Fair Value, Inputs, Level 3 [Member] | ||||||
| Collateral-dependent loans, value | [1],[2] | 5,057,000 | $ 3,222,000 | |||
| Other real estate owned, net | [1],[2] | $ 360,000 | ||||
| Appraisal of Collateral [Member] | Fair Value, Inputs, Level 3 [Member] | Meaurement Input, Appraisal Adjustments Rate [Member] | ||||||
| Collateral-dependent loans, range | [1],[2] | 0.08 | 0.08 | |||
| Other real estate owned, range | [1],[2] | 0 | ||||
| Appraisal of Collateral [Member] | Fair Value, Inputs, Level 3 [Member] | Meaurement Input, Appraisal Adjustments Rate [Member] | Weighted Average [Member] | ||||||
| Collateral-dependent loans, range | [1],[2] | (0.08) | (0.08) | |||
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