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Note 15 - Fair Value - Assets Measured at Fair Value on Nonrecurring Basis (Details) - Fair Value, Nonrecurring [Member] - Non-covered Loans [Member] $ in Thousands	Sep. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Impaired Loans [Member]
Total Fair Value	$ 3,114	$ 1,828
Impaired Loans [Member] | Fair Value, Inputs, Level 1 [Member]
Total Fair Value	0	0
Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member]
Total Fair Value	0	0
Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member]
Total Fair Value	$ 3,114	$ 1,828
Impaired loans, non-covered	0.25	0.26
Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member]
Impaired loans, non-covered	0.03	0.22
Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member]
Impaired loans, non-covered	0.42	0.36
OREO [Member]
Total Fair Value	$ 2,103	$ 3,969
OREO [Member] | Fair Value, Inputs, Level 1 [Member]
Total Fair Value	0	0
OREO [Member] | Fair Value, Inputs, Level 2 [Member]
Total Fair Value	0	0
OREO [Member] | Fair Value, Inputs, Level 3 [Member]
Total Fair Value	$ 2,103	$ 3,969
OREO	0.24	0.08
OREO [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member]
OREO	0	0.15
OREO [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member]
OREO	0.77	1

X

- Definition

The measurement input for non-covered impaired loans.

+ References

No definition available.

+ Details

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- Definition

The measurement input for non-covered other real estate owned.

+ References

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X

- 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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