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Note 11 - Fair Values (Details Textual) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022
Debt Securities, Available-for-Sale | $ 608,972,000 | $ 608,972,000 | $ 602,936,000
Loan, Mortgage, Held-for-Sale, Fair Value Disclosure | $ 12,200,000 | 12,200,000 | 3,600,000
Real Estate Dependent Loans and Foreclosed Assets Estimated Selling Costs [Member] |  |  |
Fair Value Inputs, Discount Factor | 10.00% |  |
Maximum [Member] | Real Estate Dependent Loans and Foreclosed Assets [Member] | Commercial Real Estate [Member] |  |  |
Fair Value Inputs, Discount Factor | 35.00% |  |
Maximum [Member] | Real Estate Dependent Loans and Foreclosed Assets [Member] | Residential Real Estate [Member] |  |  |
Fair Value Inputs, Discount Factor | 50.00% |  |
Minimum [Member] | Real Estate Dependent Loans and Foreclosed Assets [Member] | Commercial Real Estate [Member] |  |  |
Fair Value Inputs, Discount Factor | 25.00% |  |
Minimum [Member] | Real Estate Dependent Loans and Foreclosed Assets [Member] | Residential Real Estate [Member] |  |  |
Fair Value Inputs, Discount Factor | 25.00% |  |
Municipal General Obligation Bonds [Member] |  |  |
Debt Securities, Available-for-Sale | $ 157,565,000 | 157,565,000 | 154,433,000
Fair Value, Inputs, Level 1 [Member] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Municipal General Obligation Bonds [Member] | Maximum [Member] |  |  |
Debt Securities, Available-for-Sale, Decrease Due to Scheduled Maturities |  | 100,000 | 100,000
Available-for-Sale Securities [Member] |  |  |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Ending Balance | $ 0 | $ 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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