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Note 12 - Fair Value Measurements - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - Impaired Loans [Member] - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Assets, Fair Value | $ 3,630 | $ 3,595
Fair Value, Inputs, Level 1 [Member] |  |
Assets, Fair Value |  |
Fair Value, Inputs, Level 2 [Member] |  |
Assets, Fair Value |  |
Fair Value, Inputs, Level 3 [Member] |  |
Assets, Fair Value | $ 3,630 | $ 3,595

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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