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Note 12 - Fair Value Measurements - Balances of Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Fair value, available for sale securities | $ 123,193 | $ 120,983
Total liabilities | 31 |
Fair Value, Inputs, Level 1 [Member] |  |
Fair value, available for sale securities | 0 | 0
Total liabilities | 0 |
Fair Value, Inputs, Level 2 [Member] |  |
Fair value, available for sale securities | 123,193 | 120,983
Total liabilities | 31 |
Fair Value, Inputs, Level 3 [Member] |  |
Fair value, available for sale securities | 0 | 0
Total liabilities | 0 |
Fair Value, Recurring [Member] |  |
Derivatives - cash flow hedges | 31 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Derivatives - cash flow hedges | 0 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Derivatives - cash flow hedges | 31 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Derivatives - cash flow hedges | 0 |
US Agency and Mortgage-backed Securities [Member] |  |
Fair value, available for sale securities | 94,820 | 94,905
US Agency and Mortgage-backed Securities [Member] | Fair Value, Recurring [Member] |  |
Fair value, available for sale securities | 94,820 | 94,905
US Agency and Mortgage-backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value, available for sale securities | 0 | 0
US Agency and Mortgage-backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value, available for sale securities | 94,820 | 94,905
US Agency and Mortgage-backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value, available for sale securities | 0 | 0
Municipal Bonds [Member] |  |
Fair value, available for sale securities | 28,373 | 26,078
Municipal Bonds [Member] | Fair Value, Recurring [Member] |  |
Fair value, available for sale securities | 28,373 | 26,078
Municipal Bonds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value, available for sale securities | 0 | 0
Municipal Bonds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value, available for sale securities | 28,373 | 26,078
Municipal Bonds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value, available for sale securities | $ 0 | $ 0

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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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: 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=121558606&loc=SL82898722-210454 Reference 3: 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=121553693&loc=d3e26610-111562 Reference 4: 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=121645371&loc=d3e27161-111563 + 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://fasb.org/us-gaap/role/ref/legacyRef -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 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 + Details
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