Value of input used to measure alternative investment.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
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Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 14A
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Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Amount of expense related to loss from loan transactions.

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-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
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Note 8 - Fair Value (Details Textual)	3 Months Ended		6 Months Ended	9 Months Ended
Note 8 - Fair Value (Details Textual)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2018 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Provision for Loan Losses Expensed	$ 300,000	$ 270,000		$ 980,000	$ 633,000
Other Real Estate, Ending Balance	0			0		$ 0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales				25,000
Fair Value, Measurements, Nonrecurring [Member]
Other Real Estate, Ending Balance	$ 0			$ 0		0
Fair Value, Inputs, Level 3 [Member] \| Equity Securities [Member]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales			$ 25,000
Measurement Input, Discount Rate [Member]
Alternative Investment, Measurement Input	0.1			0.1
Real Estate Loan [Member]
Impaired Financing Receivable, Unpaid Principal Balance, Total	$ 62,000			$ 62,000		68,000
Home Equity Loan [Member]
Impaired Financing Receivable, Unpaid Principal Balance, Total	6,000			6,000		8,000
Market and Income Approach Valuation Technique [Member]
Impaired Financing Receivable, Recorded Investment, Total	0			0		$ 0
Market and Income Approach Valuation Technique [Member] \| Impaired Loans [Member]
Provision for Loan Losses Expensed	$ 0	$ 0		$ 0	$ 0