Note 5 - Loans (Details) - Troubled Debt Restructurings (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts	7	24	30
Troubled debt restructurings, pre-modification outstanding recorded investment	$ 9,368	$ 17,338	$ 7,782
Troubled debt restructurings, post-modification outstanding recorded investment	9,372	16,768	7,835
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts	2	3	4
Troubled debt restructurings, pre-modification outstanding recorded investment	9,070	6,837	579
Troubled debt restructurings, post-modification outstanding recorded investment	9,070	6,638	579
Residential One To Four Family [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts	4	15	18
Troubled debt restructurings, pre-modification outstanding recorded investment	263	1,286	1,974
Troubled debt restructurings, post-modification outstanding recorded investment	267	1,360	2,020
Consumer Other Financing Receivable [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts	1
Troubled debt restructurings, pre-modification outstanding recorded investment	35
Troubled debt restructurings, post-modification outstanding recorded investment	35
Commercial Real Estate Other Receivable [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts		4	4
Troubled debt restructurings, pre-modification outstanding recorded investment		9,050	4,968
Troubled debt restructurings, post-modification outstanding recorded investment		8,604	4,968
Residential Real Estate and Home Equities [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts		2	4
Troubled debt restructurings, pre-modification outstanding recorded investment		165	261
Troubled debt restructurings, post-modification outstanding recorded investment		$ 166	$ 268

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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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