Note 9 - Intangible Assets (Details Textual) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
Mar. 31, 2016	Dec. 31, 2018
Goodwill, Impairment Loss		$ 0
Goodwill, Amortization period		15 years
Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life		8 years
Acquired Finite-lived Intangible Asset, Residual Value		$ 0
Finite-Lived Intangible Asset, Amortization Period		15 years
Bank of America Branches [Member]
Goodwill, Ending Balance	$ 665
Bank of America Branches [Member] \| Core Deposits [Member]
Finite-lived Intangible Assets Acquired	$ 1,800

The amortization period of finite-lived intangible assets for tax purposes.

No definition available.

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- Definition

The amortization period of goodwill for tax purposes.

+ References

No definition available.

+ Details

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- Definition

The aggregate expected value at the end of their useful life of a major finite-lived intangible asset class acquired during the period either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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