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Note 8 - Loans and Related Allowance for Loan and Lease Losses - Classes of the Loan Portfolio Summarized by Credit Quality (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Loans, total | $ 932,374 | $ 923,213
Commercial And Industrial [Member] |  |
Loans, total | 99,809 | 101,346
Real Estate Construction Porfolio Segment [Member] |  |
Loans, total | 48,687 | 47,017
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member] |  |
Loans, total | 316,856 | 318,157
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member] |  |
Loans, total | 448,766 | 437,947
Consumer Portfolio Segment [Member] |  |
Loans, total | 18,256 | 18,746
Pass [Member] |  |
Loans, total | 900,140 | 897,759
Pass [Member] | Commercial And Industrial [Member] |  |
Loans, total | 87,415 | 95,621
Pass [Member] | Real Estate Construction Porfolio Segment [Member] |  |
Loans, total | 48,687 | 46,995
Pass [Member] | Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member] |  |
Loans, total | 310,965 | 312,176
Pass [Member] | Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member] |  |
Loans, total | 434,991 | 424,225
Pass [Member] | Consumer Portfolio Segment [Member] |  |
Loans, total | 18,082 | 18,742
Special Mention [Member] |  |
Loans, total | 17,876 | 11,829
Special Mention [Member] | Commercial And Industrial [Member] |  |
Loans, total | 8,955 | 1,942
Special Mention [Member] | Real Estate Construction Porfolio Segment [Member] |  |
Loans, total |  |
Special Mention [Member] | Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member] |  |
Loans, total | 715 | 723
Special Mention [Member] | Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member] |  |
Loans, total | 8,206 | 9,164
Substandard [Member] |  |
Loans, total | 14,358 | 13,625
Substandard [Member] | Commercial And Industrial [Member] |  |
Loans, total | 3,439 | 3,783
Substandard [Member] | Real Estate Construction Porfolio Segment [Member] |  |
Loans, total |  | 22
Substandard [Member] | Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member] |  |
Loans, total | 5,176 | 5,258
Substandard [Member] | Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member] |  |
Loans, total | 5,569 | 4,558
Substandard [Member] | Consumer Portfolio Segment [Member] |  |
Loans, total | 174 | $ 4
Doubtful [Member] |  |
Loans, total |  |
Doubtful [Member] | Commercial And Industrial [Member] |  |
Loans, total |  |
Doubtful [Member] | Real Estate Construction Porfolio Segment [Member] |  |
Loans, total |  |
Doubtful [Member] | Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member] |  |
Loans, total |  |
Doubtful [Member] | Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member] |  |
Loans, total |  |

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 + Details
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