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Note 3 - Loans and Allowance for Credit Losses - Financial Effect by Type of Modification (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Modified in period |  | $ 7,350
Commercial Portfolio Segment [Member] |  |
Modified in period |  | 6,593
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Modified in period |  | 6,593
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
Modified in period |  | 0
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
Modified in period |  | 0
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
Modified in period |  | 0
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
Modified in period |  | 0
Retail Portfolio Segment [Member] |  |
Modified in period |  | $ 757
Contractual Interest Rate Reduction [Member] |  |
Modified in period | $ 0 |
Contractual Interest Rate Reduction [Member] | Commercial Portfolio Segment [Member] |  |
Modified in period | 0 |
Contractual Interest Rate Reduction [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Modified in period | 0 |
Contractual Interest Rate Reduction [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
Modified in period | 0 |
Contractual Interest Rate Reduction [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
Modified in period | 0 |
Contractual Interest Rate Reduction [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
Modified in period | 0 |
Contractual Interest Rate Reduction [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
Modified in period | 0 |
Contractual Interest Rate Reduction [Member] | Retail Portfolio Segment [Member] |  |
Modified in period | 0 |
Contractual Interest Rate Reduction [Member] | Retail Portfolio Segment [Member] | Loans Categorized as 1-4 Family Mortgages [Member] |  |
Modified in period | 0 |
Contractual Interest Rate Reduction [Member] | Retail Portfolio Segment [Member] | Other Consumer Loans [Member] |  |
Modified in period | 0 |
Extended Maturity [Member] |  |
Modified in period | 28,813 |
Extended Maturity [Member] | Commercial Portfolio Segment [Member] |  |
Modified in period | 28,813 |
Extended Maturity [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Modified in period | 17,919 |
Extended Maturity [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
Modified in period | 0 |
Extended Maturity [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
Modified in period | 0 |
Extended Maturity [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
Modified in period | 10,894 |
Extended Maturity [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
Modified in period | 0 |
Extended Maturity [Member] | Retail Portfolio Segment [Member] |  |
Modified in period | 0 |
Extended Maturity [Member] | Retail Portfolio Segment [Member] | Loans Categorized as 1-4 Family Mortgages [Member] |  |
Modified in period | 0 |
Extended Maturity [Member] | Retail Portfolio Segment [Member] | Other Consumer Loans [Member] |  |
Modified in period | 0 |
Principal Forgiveness [Member] |  |
Modified in period | 0 |
Principal Forgiveness [Member] | Commercial Portfolio Segment [Member] |  |
Modified in period | 0 |
Principal Forgiveness [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Modified in period | 0 |
Principal Forgiveness [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
Modified in period | 0 |
Principal Forgiveness [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
Modified in period | 0 |
Principal Forgiveness [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
Modified in period | 0 |
Principal Forgiveness [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
Modified in period | 0 |
Principal Forgiveness [Member] | Retail Portfolio Segment [Member] |  |
Modified in period | 0 |
Principal Forgiveness [Member] | Retail Portfolio Segment [Member] | Loans Categorized as 1-4 Family Mortgages [Member] |  |
Modified in period | 0 |
Principal Forgiveness [Member] | Retail Portfolio Segment [Member] | Other Consumer Loans [Member] |  |
Modified in period | $ 0 |

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- Definition Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-42 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 33 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-33 + Details
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