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Note 5 - Loans and Related Allowance for Loan and Lease Losses - Impaired Loans by Class (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Recorded investment, with no related allowance | $ 2,744 | $ 3,501
Unpaid principal balance, with no related allowance | 3,221 | 4,104
Recorded investment, with related allowance | 5,225 | 4,586
Unpaid principal balance, with related allowance | 5,765 | 4,863
Related allowance | 740 | 490
Recorded investment | 7,969 | 8,087
Unpaid principal balance | 8,986 | 8,967
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] |  |
Recorded investment, with no related allowance | 1,547 | 801
Unpaid principal balance, with no related allowance | 1,802 | 801
Recorded investment, with related allowance | 3,750 | 3,322
Unpaid principal balance, with related allowance | 4,277 | 3,596
Related allowance | 655 | 371
Recorded investment | 5,297 | 4,123
Unpaid principal balance | 6,079 | 4,397
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] |  |
Recorded investment, with no related allowance |  | 1,118
Unpaid principal balance, with no related allowance |  | 1,142
Recorded investment, with related allowance | 731 | 447
Unpaid principal balance, with related allowance | 731 | 447
Related allowance | 10 | 10
Recorded investment | 731 | 1,565
Unpaid principal balance | 731 | 1,589
Residential Portfolio Segment [Member] |  |
Recorded investment, with no related allowance | 820 | 941
Unpaid principal balance, with no related allowance | 874 | 1,013
Recorded investment, with related allowance | 284 | 378
Unpaid principal balance, with related allowance | 284 | 378
Related allowance | 17 | 20
Recorded investment | 1,104 | 1,319
Unpaid principal balance | 1,158 | 1,391
Commercial And Industrial [Member] |  |
Recorded investment, with no related allowance | 370 | 561
Unpaid principal balance, with no related allowance | 538 | 1,056
Recorded investment, with related allowance | 217 | 273
Unpaid principal balance, with related allowance | 230 | 276
Related allowance | 42 | 48
Recorded investment | 587 | 834
Unpaid principal balance | 768 | 1,332
Home Equity Lines of Credit [Member] |  |
Recorded investment, with no related allowance | 7 | 80
Unpaid principal balance, with no related allowance | 7 | 92
Recorded investment, with related allowance | 243 | 166
Unpaid principal balance, with related allowance | 243 | 166
Related allowance | 16 | 41
Recorded investment | 250 | 246
Unpaid principal balance | $ 250 | 258
Consumer Portfolio Segment [Member] |  |
Recorded investment, with no related allowance |  | 0
Unpaid principal balance, with no related allowance |  | 0
Related allowance |  | 0
Unpaid principal balance |  | $ 0

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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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- Definition Amount of allowance for credit losses related to recorded investment. + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 + Details
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