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Note 6 - Fair Value Measurements - Carrying Values and Estimated Values of Financial Instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022 | Sep. 01, 2022
--- | --- | --- | ---
Fair value, available for sale securities | $ 148,175 | $ 162,907 | $ 74,400
Securities held to maturity, net | 150,079 | 153,158 |
Restricted securities | 2,077 | 1,908 |
Bank owned life insurance | 24,734 | 24,531 |
Reported Value Measurement [Member] |  |  |
Cash and interest-bearing deposits in banks | 50,099 | 66,914 |
Fair value, available for sale securities | 148,175 | 162,907 |
Securities held to maturity, net | 149,948 | 153,158 |
Restricted securities | 2,077 | 1,908 |
Loans, net | 943,603 | 913,077 |
Bank owned life insurance | 24,734 | 24,531 |
Accrued interest receivable | 4,502 | 4,543 |
Derivatives - cash flow hedges | 3,065 | 2,679 |
Deposits | 1,235,173 | 1,241,332 |
Subordinated debt | 4,997 | 4,995 |
Junior subordinated debt | 9,279 | 9,279 |
Accrued interest payable | 667 | 163 |
Estimate of Fair Value Measurement [Member] |  |  |
Cash and interest-bearing deposits in banks | 50,099 | 66,914 |
Fair value, available for sale securities | 148,175 | 162,907 |
Securities held to maturity, net | 134,728 | 141,797 |
Restricted securities | 2,077 | 1,908 |
Loans, net | 901,921 | 880,473 |
Bank owned life insurance | 24,734 | 24,531 |
Accrued interest receivable | 4,502 | 4,543 |
Derivatives - cash flow hedges | 3,065 | 2,679 |
Deposits | 1,230,713 | 1,235,787 |
Subordinated debt | 5,161 | 5,267 |
Junior subordinated debt | 6,290 | 6,067 |
Accrued interest payable | 667 | 163 |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Cash and interest-bearing deposits in banks | 50,099 | 66,914 |
Fair value, available for sale securities | 0 | 0 |
Securities held to maturity, net | 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 |
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 | 148,175 | 162,907 |
Securities held to maturity, net | 134,728 | 141,797 |
Restricted securities | 2,077 | 1,908 |
Loans, net | 0 | 0 |
Bank owned life insurance | 24,734 | 24,531 |
Accrued interest receivable | 4,502 | 4,543 |
Derivatives - cash flow hedges | 3,065 | 2,679 |
Deposits |  | 1,104,483 |
Subordinated debt | 0 | 0 |
Junior subordinated debt | 0 | 0 |
Accrued interest payable | 667 | 163 |
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, net | 0 | 0 |
Restricted securities | 0 | 0 |
Loans, net |  | 880,473 |
Bank owned life insurance | 0 | 0 |
Accrued interest receivable | 0 | 0 |
Derivatives - cash flow hedges | 0 | 0 |
Deposits |  | 131,304 |
Subordinated debt |  | 5,267 |
Junior subordinated debt |  | 6,067 |
Accrued interest payable | $ 0 | $ 0 |

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481830/320-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
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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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