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Note 8 - Loans and Related Allowance for Loan and Lease Losses - Primary Segments of the Loan Portfolio (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Individually evaluated for impairment | $ 11,787 | $ 12,109
Collectively evaluated for impairment | 931,887 | 911,104
Total loans | 943,674 | 923,213
Commercial And Industrial [Member] |  |
Individually evaluated for impairment | 2,923 | 3,627
Collectively evaluated for impairment | 99,052 | 97,719
Total loans | 101,975 | 101,346
Real Estate Construction Porfolio Segment [Member] |  |
Individually evaluated for impairment |  | 44
Collectively evaluated for impairment | 45,647 | 46,973
Total loans | 45,647 | 47,017
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member] |  |
Individually evaluated for impairment | 2,652 | 2,824
Collectively evaluated for impairment | 318,206 | 315,333
Total loans | 320,858 | 318,157
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member] |  |
Individually evaluated for impairment | 6,209 | 5,610
Collectively evaluated for impairment | 450,841 | 432,337
Total loans | 457,050 | 437,947
Consumer Portfolio Segment [Member] |  |
Individually evaluated for impairment | 3 | 4
Collectively evaluated for impairment | 18,141 | 18,742
Total loans | $ 18,144 | $ 18,746

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- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- 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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