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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 | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Average recorded investment | $ 8,595 | $ 16,896 | $ 8,424 | $ 15,620
Interest income recognized | 58 | 268 | 138 | 373
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] |  |  |  |
Average recorded investment | 1,489 | 3,459 | 1,514 | 3,464
Interest income recognized | 15 | 32 | 31 | 65
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] |  |  |  |
Average recorded investment | 4,776 | 10,864 | 4,558 | 9,604
Interest income recognized | 23 | 209 | 67 | 258
Residential Portfolio Segment [Member] |  |  |  |
Average recorded investment | 1,227 | 1,206 | 1,257 | 1,230
Interest income recognized | 13 | 14 | 24 | 25
Commercial And Industrial [Member] |  |  |  |
Average recorded investment | 864 | 1,019 | 854 | 973
Interest income recognized | 6 | 11 | 13 | 21
Home Equity Lines of Credit [Member] |  |  |  |
Average recorded investment | 239 | 347 | 241 | 348
Interest income recognized | $ 1 | 2 | $ 3 | 4
Consumer Portfolio Segment [Member] |  |  |  |
Average recorded investment |  | 1 |  | 1
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=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 http://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524 + Details
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