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Note 12 - Fair Value - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Derivative Liabilities | $ 158 | $ 167
Securities available for sale | 157,854 | 165,579
Fair Value, Measurements, Recurring [Member] |  |
Fair value loans | 4,540 | 4,701
Deferred compensation assets | 3,199 | 3,224
Deferred compensation liabilities | 3,199 | 3,224
Derivative Liabilities | 158 | 167
Securities available for sale | 157,854 | 165,579
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value loans |  |
Deferred compensation assets | 3,199 | 3,224
Deferred compensation liabilities | 3,199 | 3,224
Derivative Liabilities |  |
Securities available for sale | 55 | 55
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value loans | 4,540 | 4,701
Deferred compensation assets |  |
Deferred compensation liabilities |  |
Derivative Liabilities | 158 | 167
Securities available for sale | 157,799 | 165,524
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value loans |  |
Deferred compensation assets |  |
Deferred compensation liabilities |  |
Derivative Liabilities |  |
Securities available for sale |  |
Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member] |  |
Securities available for sale | 16,980 |
Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Securities available for sale |  |
Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Securities available for sale | 16,980 |
Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Securities available for sale |  |
Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member] |  |
Securities available for sale | 1,300 | 1,345
Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Securities available for sale |  |
Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Securities available for sale | 1,300 | 1,345
Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Securities available for sale |  |
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Securities available for sale | 106,909 | 113,331
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Securities available for sale |  |
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Securities available for sale | 106,909 | 113,331
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Securities available for sale |  |
Fair Value, Measurements, Recurring [Member] | Single Issue Trust Preferred Securities [Member] |  |
Securities available for sale | 8,943 | 19,939
Fair Value, Measurements, Recurring [Member] | Single Issue Trust Preferred Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Securities available for sale |  |
Fair Value, Measurements, Recurring [Member] | Single Issue Trust Preferred Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Securities available for sale | 8,943 | 19,939
Fair Value, Measurements, Recurring [Member] | Single Issue Trust Preferred Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Securities available for sale |  |
Fair Value, Measurements, Recurring [Member] | Mortgage-backed Agency Securities [Member] |  |
Securities available for sale | 23,649 | 30,891
Fair Value, Measurements, Recurring [Member] | Mortgage-backed Agency Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Securities available for sale |  |
Fair Value, Measurements, Recurring [Member] | Mortgage-backed Agency Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Securities available for sale | 23,649 | 30,891
Fair Value, Measurements, Recurring [Member] | Mortgage-backed Agency Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Securities available for sale |  |
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member] |  |
Securities available for sale | 73 | 73
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Securities available for sale | 55 | 55
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Securities available for sale | 18 | 18
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Securities available for sale |  |

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
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