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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	Jun. 30, 2021	Dec. 31, 2020
Assets, Fair Value	$ 1,456	$ 3,595
Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value	0	0
Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value	0	0
Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value	$ 1,456	$ 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=123874694&loc=d3e19207-110258

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