Note 5 - Loans - Troubled Debt Restructurings (Details) $ in Thousands		3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications, Number of Contracts		1		1	1
Pre-modification outstanding recorded investment		$ 1,127		$ 1,127	$ 823
Post-modification outstanding recorded investment		$ 1,127		$ 1,127	$ 823
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Individual Tax Identification Number Loan [Member]
Financing Receivable, Modifications, Number of Contracts			3		6
Pre-modification outstanding recorded investment			$ 263		$ 522
Post-modification outstanding recorded investment			$ 209		$ 485
Financing Receivable, Modifications, Number of Contracts	118	1	3	1	7
Pre-modification outstanding recorded investment		$ 1,127	$ 263	$ 1,127	$ 1,345
Post-modification outstanding recorded investment		$ 1,127	$ 209	$ 1,127	$ 1,308

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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