Note 4 - Loans, Allowance for Loan Losses and Other Real Estate Owned - Troubled Debt Restructurings (Details) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)
Number of Contracts	11	13
Pre-Modification Carrying Value	$ 10,882	$ 11,752
Financing Receivable, Troubled Debt Restructuring	7,434	8,579
Period-End Individual Impairment Allowance	$ 19	$ 19
Commercial Portfolio Segment [Member]
Number of Contracts	4	4
Pre-Modification Carrying Value	$ 2,274	$ 2,274
Financing Receivable, Troubled Debt Restructuring	708	811
Period-End Individual Impairment Allowance	$ 19	$ 19
Commercial Real Estate Portfolio Segment [Member]
Number of Contracts	6	8
Pre-Modification Carrying Value	$ 8,367	$ 9,237
Financing Receivable, Troubled Debt Restructuring	6,531	7,568
Period-End Individual Impairment Allowance	$ 0	$ 0
Residential Portfolio Segment [Member]
Number of Contracts	1	1
Pre-Modification Carrying Value	$ 241	$ 241
Financing Receivable, Troubled Debt Restructuring	195	200
Period-End Individual Impairment Allowance	$ 0	$ 0

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

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Amount, before troubled debt restructuring, of financing receivable to be modified.

+ References

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Amount of financing receivable modified as troubled debt restructuring.

+ 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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554

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