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Note 8 - Loans and Related Allowance for Loan and Lease Losses - Additional Information on Impaired Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Average recorded investment | $ 18,721 | $ 14,914 | $ 15,850 | $ 14,968
Interest income recognized | 172 | 129 | 535 | 368
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] |  |  |  |
Average recorded investment | 2,893 | 3,548 | 3,173 | 3,891
Interest income recognized | 0 | 35 | 55 | 107
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] |  |  |  |
Average recorded investment | 12,912 | 7,796 | 9,988 | 6,426
Interest income recognized | 129 | 60 | 387 | 179
Residential Portfolio Segment [Member] |  |  |  |
Average recorded investment | 1,242 | 1,632 | 1,229 | 1,713
Interest income recognized | 14 | 14 | 39 | 37
Commercial And Industrial [Member] |  |  |  |
Average recorded investment | 1,376 | 1,786 | 1,136 | 1,992
Interest income recognized | 28 | 20 | 49 | 44
Home Equity Lines of Credit [Member] |  |  |  |
Average recorded investment | 298 | 150 | 323 | 134
Interest income recognized | 1 | 0 | 5 | 1
Consumer Portfolio Segment [Member] |  |  |  |
Average recorded investment | 0 | 2 | 1 | 2
Interest income recognized | $ 0 | 0 | $ 0 | 0
Construction and Other [Member] |  |  |  |
Average recorded investment |  | 0 |  | 810
Interest income recognized |  | $ 0 |  | $ 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 http://asc.fasb.org/extlink&oid=121611835&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 http://asc.fasb.org/extlink&oid=121611835&loc=d3e5258-111524 + Details
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