Note 6 - Loans (Details) - Troubled Debt Restructurings $ in Thousands		3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)
Financing Receivable, Modifications [Line Items]
Number of contract	121	3	4	10	6
Pre-modification outstanding recorded investment		$ 274	$ 9,183	$ 1,619	$ 9,333
Post-modification outstanding recorded investment		$ 242	$ 9,183	$ 1,550	$ 9,337
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of contract		1	2	2	2
Pre-modification outstanding recorded investment		$ 49	$ 9,070	$ 872	$ 9,070
Post-modification outstanding recorded investment		$ 49	$ 9,070	$ 872	$ 9,070
Residential Portfolio Segment [Member] \| Individual Tax Identification Number Loan [Member] \| Real Estate Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of contract		2	2	8	4
Pre-modification outstanding recorded investment		$ 225	$ 113	$ 747	$ 263
Post-modification outstanding recorded investment		$ 193	$ 113	$ 678	$ 267

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

+ References

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=49124121&loc=SL6953676-111524

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