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Note 5 - Loans - Average Balance and Interest Income Recognized Related to Impaired Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Average Recorded Investment | $ 71,371 | $ 72,740 |
Interest Income Recognized | 435 | 1,074 | $ 1,000
Commercial Portfolio Segment [Member] |  |  |
Average Recorded Investment | 28,109 | 21,453 |
Interest Income Recognized | 4 | 0 |
Commercial Real Estate Portfolio Segment [Member] |  |  |
Average Recorded Investment | 28,983 | 38,047 |
Interest Income Recognized | 405 | 1,044 |
Real Estate Construction Portfolio Segment [Member] |  |  |
Average Recorded Investment |  | 3,805 |
Interest Income Recognized |  | 0 |
Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |  |
Average Recorded Investment | 14,251 | 9,435 |
Interest Income Recognized | 26 | $ 30 |
Installment and Other Loans [Member ] |  |  |
Average Recorded Investment | 28 |  |
Interest Income Recognized | $ 0 |  |

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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524 + Details
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- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 + Details
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