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Note 15 - Commitments and Unfunded Credits - Financial Instruments Representing Credit Risk (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Commitments to Extend Credit [Member] |  |
Contract amounts represent credit risk | $ 114,892 | $ 92,528
Standby Letters of Credit [Member] |  |
Contract amounts represent credit risk | $ 10,675 | $ 10,950

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- Definition The fair value of financial assets, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: 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 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |