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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, 2017 | Dec. 31, 2016
--- | --- | ---
Loans, collectively evaluated for impairment | $ 656,758 | $ 639,373
Real Estate Construction Portfolio Segment[Member] |  |
Loans, collectively evaluated for impairment | 31,812 | 36,075
Consumer Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 165,698 | 156,841
Commercial Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 333,898 | 328,675
Commercial Non Real Estate Segment [Member] |  |
Loans, collectively evaluated for impairment | 39,289 | 38,783
Consumer Non Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 34,618 | 33,525
Pass [Member] |  |
Loans, collectively evaluated for impairment | 651,706 | 622,802
Pass [Member] | States Political Subdivisions [Member] |  |
Loans, collectively evaluated for impairment | 51,443 | 45,474
Special Mention [Member] |  |
Loans, collectively evaluated for impairment | 3,361 | 13,519
Special Mention [Member] | States Political Subdivisions [Member] |  |
Loans, collectively evaluated for impairment | 0 | 0
Classified Excluding Impaired [Member] |  |
Loans, collectively evaluated for impairment | 1,691 | 3,052
Classified Excluding Impaired [Member] | States Political Subdivisions [Member] |  |
Loans, collectively evaluated for impairment | 0 | 0
Construction, 1-4 Family Residential [Member] | Pass [Member] | Real Estate Construction Portfolio Segment[Member] |  |
Loans, collectively evaluated for impairment | 10,396 | 11,635
Construction, 1-4 Family Residential [Member] | Special Mention [Member] | Real Estate Construction Portfolio Segment[Member] |  |
Loans, collectively evaluated for impairment | 0 | 3,648
Construction, 1-4 Family Residential [Member] | Classified Excluding Impaired [Member] | Real Estate Construction Portfolio Segment[Member] |  |
Loans, collectively evaluated for impairment | 0 | 0
Construction, Other [Member] | Pass [Member] | Real Estate Construction Portfolio Segment[Member] |  |
Loans, collectively evaluated for impairment | 21,416 | 20,972
Construction, Other [Member] | Special Mention [Member] | Real Estate Construction Portfolio Segment[Member] |  |
Loans, collectively evaluated for impairment | 0 | 0
Construction, Other [Member] | Classified Excluding Impaired [Member] | Real Estate Construction Portfolio Segment[Member] |  |
Loans, collectively evaluated for impairment | 0 | 0
Equity Lines [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 16,673 | 17,034
Equity Lines [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 39 | 82
Equity Lines [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 0 | 0
Closed End First Liens [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 85,975 | 83,658
Closed End First Liens [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 2,400 | 1,267
Closed End First Liens [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 355 | 580
Closed End Junior Liens [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 4,483 | 4,861
Closed End Junior Liens [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 29 | 15
Closed End Junior Liens [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 12 | 151
Investor Owned Residential Real Estate [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 55,410 | 48,277
Investor Owned Residential Real Estate [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 66 | 333
Investor Owned Residential Real Estate [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 256 | 583
Multifamily Real Estate [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 95,894 | 99,002
Multifamily Real Estate [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 127 | 1,733
Multifamily Real Estate [Member] | Classified Excluding Impaired [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment |  | 0
Commercial Real Estate, Owner Occupied [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 130,256 | 120,170
Commercial Real Estate, Owner Occupied [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 246 | 1,188
Commercial Real Estate, Owner Occupied [Member] | Classified Excluding Impaired [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 763 | 1,425
Commercial Real Estate Other [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 106,612 | 103,534
Commercial Real Estate Other [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 0 | 1,543
Commercial Real Estate Other [Member] | Classified Excluding Impaired [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 0 | 80
Commercial and Industrial [Member] | Pass [Member] | Commercial Non Real Estate Segment [Member] |  |
Loans, collectively evaluated for impairment | 38,904 | 35,521
Commercial and Industrial [Member] | Special Mention [Member] | Commercial Non Real Estate Segment [Member] |  |
Loans, collectively evaluated for impairment | 220 | 3,229
Commercial and Industrial [Member] | Classified Excluding Impaired [Member] | Commercial Non Real Estate Segment [Member] |  |
Loans, collectively evaluated for impairment | 165 | 33
Credit Card Receivable [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 5,493 | 5,978
Credit Card Receivable [Member] | Special Mention [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 0 | 0
Credit Card Receivable [Member] | Classified Excluding Impaired [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 0 | 0
Automobile Loan [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 16,059 | 14,457
Automobile Loan [Member] | Special Mention [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 218 | 25
Automobile Loan [Member] | Classified Excluding Impaired [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 116 | 192
Other Consumer Loans [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 12,692 | 12,229
Other Consumer Loans [Member] | Special Mention [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | 16 | 636
Other Consumer Loans [Member] | Classified Excluding Impaired [Member] | Consumer Non Real Estate Portfolio Segment [Member] |  |
Loans, collectively evaluated for impairment | $ 24 | $ 8

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