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Note 5 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Non-impaired gross loans |  | $ 765,124 | $ 728,738
Real Estate Construction Portfolio Segment[Member] |  |  |
Non-impaired gross loans |  | 42,266 | 42,303
Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 181,588 | 180,713
Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 389,259 | 361,765
Commercial Non Real Estate Segment [Member] |  |  |
Non-impaired gross loans |  | 77,920 | 45,658
Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 33,108 | 34,535
Pass [Member] |  |  |
Non-impaired gross loans | [1] | 756,616 | 727,642
Pass [Member] | States Political Subdivisions [Member] |  |  |
Non-impaired gross loans |  | 40,983 | 63,764
Special Mention [Member] |  |  |
Non-impaired gross loans | [1] | 8,035 | 135
Classified Excluding Impaired [Member] |  |  |
Non-impaired gross loans | [1] | 473 | 961
Construction, 1-4 Family Residential [Member] | Pass [Member] | Real Estate Construction Portfolio Segment[Member] |  |  |
Non-impaired gross loans | [1] | 8,195 | 7,590
Construction, Other [Member] | Pass [Member] | Real Estate Construction Portfolio Segment[Member] |  |  |
Non-impaired gross loans | [1] | 34,071 | 34,713
Equity Lines [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 13,903 | 16,435
Closed End First Liens [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 92,241 | 94,814
Closed End First Liens [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 66 |
Closed End First Liens [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 284 | 517
Closed End Junior Liens [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 3,003 | 3,861
Investor Owned Residential Real Estate [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 71,450 | 65,063
Investor Owned Residential Real Estate [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 641 |
Investor Owned Residential Real Estate [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] |  | 23
Multifamily Real Estate [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 87,455 | 87,934
Multifamily Real Estate [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 265 |
Multifamily Real Estate [Member] | Classified Excluding Impaired [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] |  | 94
Commercial Real Estate, Owner Occupied [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 146,900 | 127,937
Commercial Real Estate, Owner Occupied [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 543 |
Commercial Real Estate, Owner Occupied [Member] | Classified Excluding Impaired [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 140 | 164
Commercial Real Estate Other [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 147,436 | 145,636
Commercial Real Estate Other [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 6,520 |
Commercial and Industrial [Member] | Pass [Member] | Commercial Non Real Estate Segment [Member] |  |  |
Non-impaired gross loans | [1] | 77,892 | 45,387
Commercial and Industrial [Member] | Special Mention [Member] | Commercial Non Real Estate Segment [Member] |  |  |
Non-impaired gross loans | [1] |  | 135
Commercial and Industrial [Member] | Classified Excluding Impaired [Member] | Commercial Non Real Estate Segment [Member] |  |  |
Non-impaired gross loans | [1] | 28 | 136
Credit Card Receivable [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 4,665 | 5,703
Automobile Loan [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 12,024 | 14,810
Automobile Loan [Member] | Classified Excluding Impaired [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 6 | 19
Other Consumer Loans [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 16,398 | 13,995
Other Consumer Loans [Member] | Classified Excluding Impaired [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | $ 15 | $ 8
[1] | Excludes impaired, if any.

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