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Note 14 - Fair Value - Assets Measured at Fair Value on Nonrecurring Basis (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Impaired Loans [Member] | Non-covered Loans [Member]
Total Fair Value	$ 1,635	$ 3,618
Impaired Loans [Member] | Non-covered Loans [Member] | Fair Value, Inputs, Level 1 [Member]
Total Fair Value
Impaired Loans [Member] | Non-covered Loans [Member] | Fair Value, Inputs, Level 2 [Member]
Total Fair Value
Impaired Loans [Member] | Non-covered Loans [Member] | Fair Value, Inputs, Level 3 [Member]
Total Fair Value	1,635	3,618
OREO [Member] | Non-covered Loans [Member]
Total Fair Value	3,903	3,806
OREO [Member] | Non-covered Loans [Member] | Fair Value, Inputs, Level 1 [Member]
Total Fair Value
OREO [Member] | Non-covered Loans [Member] | Fair Value, Inputs, Level 2 [Member]
Total Fair Value
OREO [Member] | Non-covered Loans [Member] | Fair Value, Inputs, Level 3 [Member]
Total Fair Value	3,903	3,806
OREO [Member] | Covered Loans [Member]
Total Fair Value	152	32
OREO [Member] | Covered Loans [Member] | Fair Value, Inputs, Level 1 [Member]
Total Fair Value
OREO [Member] | Covered Loans [Member] | Fair Value, Inputs, Level 2 [Member]
Total Fair Value
OREO [Member] | Covered Loans [Member] | Fair Value, Inputs, Level 3 [Member]
Total Fair Value	$ 152	$ 32

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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

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