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Note 4 - Loans - Impaired Loans and Related Allowance for Credit Losses (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Loans with no related allowance, unpaid principal balance | $ 46,336 | $ 58,816
Loans with no related allowance, recorded investment | 38,401 | 53,578
Loans with related allowance, unpaid principal balance | 38,272 | 49,842
Loans with related allowance, recorded investment | 27,445 | 41,827
Allowance | 4,547 | 6,429
Unpaid principal balance | 84,608 | 108,658
Recorded investment | 65,846 | 95,405
Commercial Portfolio Segment [Member] |  |
Loans with no related allowance, unpaid principal balance | 15,879 | 23,784
Loans with no related allowance, recorded investment | 11,342 | 20,698
Loans with related allowance, unpaid principal balance | 14,294 | 13,703
Loans with related allowance, recorded investment | 5,217 | 6,372
Allowance | 894 | 1,030
Commercial Real Estate Portfolio Segment [Member] |  |
Loans with no related allowance, unpaid principal balance | 24,437 | 22,877
Loans with no related allowance, recorded investment | 21,209 | 22,287
Loans with related allowance, unpaid principal balance | 17,930 | 31,134
Loans with related allowance, recorded investment | 16,964 | 31,003
Allowance | 3,631 | 5,254
Real Estate Construction Portfolio Segment [Member] |  |
Loans with no related allowance, unpaid principal balance |  | 5,776
Loans with no related allowance, recorded investment |  | 4,286
Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |
Loans with no related allowance, unpaid principal balance | 6,020 | 6,379
Loans with no related allowance, recorded investment | 5,850 | 6,307
Loans with related allowance, unpaid principal balance | 6,048 | 5,005
Loans with related allowance, recorded investment | 5,264 | 4,452
Allowance | $ 22 | $ 145

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- Definition 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 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524 + Details
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