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Note 11 - Fair Value Measurement - Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Loans individually evaluated | $ 81,871 | $ 70,735
Other real estate owned and repossessed assets | 490 | 995
Total assets at fair value | 82,361 | 71,730
Fair Value, Inputs, Level 1 [Member] |  |
Loans individually evaluated | 0 | 0
Other real estate owned and repossessed assets | 0 | 0
Total assets at fair value | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Loans individually evaluated | 0 | 0
Other real estate owned and repossessed assets | 0 | 0
Total assets at fair value | 0 | 0
Fair Value, Inputs, Level 3 [Member] |  |
Loans individually evaluated | 81,871 | 70,735
Other real estate owned and repossessed assets | 490 | 995
Total assets at fair value | $ 82,361 | $ 71,730

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