Note 8 - Goodwill and Other Intangibles - Core Deposit Intangibles (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Core deposit intangible acquired in Peoples acquisition			$ 1,400,000
	$ 1,112,000	$ 1,259,000
Core Deposits [Member]
Core deposit intangible acquired in Peoples acquisition	1,418,000	1,418,000
Less accumulated amortization	306,000	159,000
	$ 1,112,000	$ 1,259,000

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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