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Note 3 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Non-impaired gross loans |  | $ 788,248 | $ 728,738
Real Estate Construction Portfolio Segment[Member] |  |  |
Non-impaired gross loans |  | 35,360 | 42,303
Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 181,949 | 180,713
Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 374,671 | 361,765
Commercial Non Real Estate Segment [Member] |  |  |
Non-impaired gross loans |  | 100,064 | 45,658
Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 34,354 | 34,535
Pass [Member] |  |  |
Non-impaired gross loans | [1] | 787,114 | 727,642
Pass [Member] | States Political Subdivisions [Member] |  |  |
Non-impaired gross loans | [1] | 61,850 | 63,764
Classified Excluding Impaired [Member] |  |  |
Non-impaired gross loans | [1] | 793 | 961
Special Mention [Member] |  |  |
Non-impaired gross loans | [1] | 341 | 135
Construction, 1-4 Family Residential [Member] | Pass [Member] | Real Estate Construction Portfolio Segment[Member] |  |  |
Non-impaired gross loans | [1] | 6,547 | 7,590
Construction, Other [Member] | Pass [Member] | Real Estate Construction Portfolio Segment[Member] |  |  |
Non-impaired gross loans | [1] | 28,792 | 34,713
Construction, Other [Member] | Classified Excluding Impaired [Member] | Real Estate Construction Portfolio Segment[Member] |  |  |
Non-impaired gross loans | [1] | 21 |
Equity Lines [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 15,982 | 16,435
Equity Lines [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 19 |
Closed End First Liens [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 92,419 | 94,814
Closed End First Liens [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 398 | 517
Closed End First Liens [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 69 |
Closed End Junior Liens [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 3,706 | 3,861
Closed End Junior Liens [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans |  | 83 |
Investor Owned Residential Real Estate [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 69,273 | 65,063
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] | 84,332 | 87,934
Multifamily Real Estate [Member] | Classified Excluding Impaired [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] |  | 94
Multifamily Real Estate [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 272 |
Commercial Real Estate, Owner Occupied [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 136,447 | 127,937
Commercial Real Estate, Owner Occupied [Member] | Classified Excluding Impaired [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 235 | 164
Commercial Real Estate Other [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 153,385 | 145,636
Commercial and Industrial [Member] | Pass [Member] | Commercial Non Real Estate Segment [Member] |  |  |
Non-impaired gross loans | [1] | 100,064 | 45,387
Commercial and Industrial [Member] | Classified Excluding Impaired [Member] | Commercial Non Real Estate Segment [Member] |  |  |
Non-impaired gross loans | [1] |  | 136
Commercial and Industrial [Member] | Special Mention [Member] | Commercial Non Real Estate Segment [Member] |  |  |
Non-impaired gross loans | [1] |  | 135
Credit Card Receivable [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 4,851 | 5,703
Automobile Loan [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 13,154 | 14,810
Automobile Loan [Member] | Classified Excluding Impaired [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 35 | 19
Other Consumer Loans [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | 16,312 | 13,995
Other Consumer Loans [Member] | Classified Excluding Impaired [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Non-impaired gross loans | [1] | $ 2 | $ 8
[1] | Excludes impaired, if any.

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