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Note 11 - Fair Value and Interest Rate Risk - Financial Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Available-for-sale securities | $ 40,275 | $ 39,496
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Available-for-sale securities | 19,976 | 20,473
Corporate Debt Securities [Member] |  |
Available-for-sale securities | 12,828 | 12,974
Subordinated Notes [Member] |  |
Available-for-sale securities | 5,980 | 4,564
US Treasury Securities [Member] |  |
Available-for-sale securities | 1,491 | 1,485
Fair Value, Recurring [Member] |  |
Available-for-sale securities | 40,275 | 39,496
Impaired PCI Loans, net | 439 | 615
Contingent consideration liability | 86 | 707
Interest swap receivable | 417 | 286
Interest swap liability | 417 | 286
Fair Value, Recurring [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Available-for-sale securities | 19,976 | 20,473
Fair Value, Recurring [Member] | Corporate Debt Securities [Member] |  |
Available-for-sale securities | 12,828 | 12,974
Fair Value, Recurring [Member] | Subordinated Notes [Member] |  |
Available-for-sale securities | 5,980 | 4,564
Fair Value, Recurring [Member] | US Treasury Securities [Member] |  |
Available-for-sale securities | 1,491 | 1,485
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |  |
Available-for-sale securities |  |
Impaired PCI Loans, net |  |
Contingent consideration liability |  |
Interest swap receivable |  |
Interest swap liability |  |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Available-for-sale securities |  |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] |  |
Available-for-sale securities |  |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Subordinated Notes [Member] |  |
Available-for-sale securities |  |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member] |  |
Available-for-sale securities |  |
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |  |
Available-for-sale securities | 40,275 | 39,496
Impaired PCI Loans, net |  |
Contingent consideration liability |  |
Interest swap receivable | 417 | 286
Interest swap liability | 417 | 286
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Available-for-sale securities | 19,976 | 20,473
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] |  |
Available-for-sale securities | 12,828 | 12,974
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Subordinated Notes [Member] |  |
Available-for-sale securities | 5,980 | 4,564
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member] |  |
Available-for-sale securities | 1,491 | 1,485
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] |  |
Available-for-sale securities |  |
Impaired PCI Loans, net | 439 | 615
Contingent consideration liability | 86 | 707
Interest swap receivable |  |
Interest swap liability |  |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Available-for-sale securities |  |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] |  |
Available-for-sale securities |  |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Subordinated Notes [Member] |  |
Available-for-sale securities |  |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member] |  |
Available-for-sale securities |  |

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118954083&loc=d3e26610-111562 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 + Details
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