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Note 6 - Fair Value Measurements - Carrying Values and Estimated Values of Financial Instruments (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 01, 2022
--- | --- | --- | ---
Fair value, available for sale securities | $ 147,675 | $ 152,857 | $ 74,400
Restricted securities | 2,112 | 2,078 |
Bank owned life insurance | 24,652 | 24,902 |
Reported Value Measurement [Member] |  |  |
Cash and interest-bearing deposits in banks | 138,709 | 87,161 |
Fair value, available for sale securities | 147,675 | 152,857 |
Securities held to maturity | 125,825 | 148,244 |
Restricted securities | 2,112 | 2,078 |
Loans, net | 960,371 | 957,456 |
Bank owned life insurance | 24,652 | 24,902 |
Accrued interest receivable | 4,978 | 4,655 |
Derivatives - cash flow hedges | 2,672 | 2,488 |
Deposits | 1,259,137 | 1,233,726 |
Other borrowings | 50,000 | 50,000 |
Subordinated debt | 4,998 | 4,997 |
Junior subordinated debt | 9,279 | 9,279 |
Accrued interest payable | 864 | 764 |
Estimate of Fair Value Measurement [Member] |  |  |
Cash and interest-bearing deposits in banks | 138,709 | 87,161 |
Fair value, available for sale securities | 147,675 | 152,857 |
Securities held to maturity | 113,973 | 137,507 |
Restricted securities | 2,112 | 2,078 |
Loans, net | 922,604 | 919,266 |
Bank owned life insurance | 24,652 | 24,902 |
Accrued interest receivable | 4,978 | 4,655 |
Derivatives - cash flow hedges | 2,672 | 2,488 |
Deposits | 1,255,870 | 1,230,731 |
Other borrowings | 49,816 | 49,987 |
Subordinated debt | 5,487 | 5,412 |
Junior subordinated debt | 8,141 | 8,493 |
Accrued interest payable | 864 | 764 |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Cash and interest-bearing deposits in banks | 138,709 | 87,161 |
Fair value, available for sale securities | 0 | 0 |
Securities held to maturity | 0 | 0 |
Restricted securities | 0 | 0 |
Loans, net | 0 | 0 |
Bank owned life insurance | 0 | 0 |
Accrued interest receivable | 0 | 0 |
Derivatives - cash flow hedges | 0 | 0 |
Deposits | 0 | 0 |
Other borrowings | 0 | 0 |
Subordinated debt | 0 | 0 |
Junior subordinated debt | 0 | 0 |
Accrued interest payable | 0 | 0 |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Cash and interest-bearing deposits in banks | 0 | 0 |
Fair value, available for sale securities | 147,675 | 152,857 |
Securities held to maturity | 113,973 | 137,507 |
Restricted securities | 2,112 | 2,078 |
Loans, net | 0 | 0 |
Bank owned life insurance | 24,652 | 24,902 |
Accrued interest receivable | 4,978 | 4,655 |
Derivatives - cash flow hedges | 2,672 | 2,488 |
Deposits | 1,061,550 | 1,041,377 |
Other borrowings | 0 | 0 |
Subordinated debt | 0 | 0 |
Junior subordinated debt | 0 | 0 |
Accrued interest payable | 864 | 764 |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Cash and interest-bearing deposits in banks | 0 | 0 |
Fair value, available for sale securities | 0 | 0 |
Securities held to maturity | 0 | 0 |
Restricted securities | 0 | 0 |
Loans, net | 922,604 | 919,266 |
Bank owned life insurance | 0 | 0 |
Accrued interest receivable | 0 | 0 |
Derivatives - cash flow hedges | 0 | 0 |
Deposits | 194,320 | 189,354 |
Other borrowings | 49,816 | 49,987 |
Subordinated debt | 5,487 | 5,412 |
Junior subordinated debt | 8,141 | 8,493 |
Accrued interest payable | $ 0 | $ 0 |

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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. 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