Note 6 - Loans (Details) - Troubled Debt Restructurings (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts	4	1
Troubled debt restructurings, pre-modification outstanding recorded investment	$ 1,082	$ 700
Troubled debt restructurings, post-modification outstanding recorded investment	1,098	700
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts	1	1
Troubled debt restructurings, pre-modification outstanding recorded investment	823	700
Troubled debt restructurings, post-modification outstanding recorded investment	823	700
Residential One to Four Family [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts	3
Troubled debt restructurings, pre-modification outstanding recorded investment	259
Troubled debt restructurings, post-modification outstanding recorded investment	$ 275

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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=35738203&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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