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Note 4 - Loans and Allowance for Loan Losses (Details Textual) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018	Jun. 30, 2019 USD ($)	Jun. 30, 2018	Dec. 31, 2018 USD ($)
Increase (Decrease) in Other Loans			$ 1,202
Change In Troubled Debt Restructurings			13.90%
Impaired Financing Receivable, Related Allowance	$ 34		$ 34		$ 98
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend	$ 1,268		$ 1,268		758
Financing Receivable, Modifications, Number of Contracts	2	0	2	0
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	$ 0		$ 0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0	0	0
Minimum Loan Balance For Loans Evaluated by Risk Categories	$ 750		$ 750
Troubled Debt Restructurings [Member]
Impaired Financing Receivable, Related Allowance	$ 27		$ 27		$ 98
Unsecured [Member]
Percentage of Loan Portfolio	4.75%		4.75%		5.02%
Residential Portfolio Segment [Member]
Real Estate Acquired Through Foreclosure	$ 77		$ 77		$ 77
Mortgage Loans in Process of Foreclosure, Amount	2,009		2,009		$ 2,375
Impaired Financing Receivable, Related Allowance	$ 7		$ 7
Financing Receivable, Modifications, Number of Contracts	1		1

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- Definition

The change during the period in loans modified as troubled debt restructurings.

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Minimum loan balance for impaired loans on nonaccrual status or nonperforming in nature.

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The percentage of the loan portfolio.

+ References

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

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Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953682-111524

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Reflects the amount of the write-down related to a troubled debt restructuring.

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-SubTopic 40
-Section 50
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Amount of allowance for credit losses related to recorded investment.

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Amount of increase (decrease) in loans classified as other.

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Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring.

+ References

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-Publisher FASB
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Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

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