Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Restructured as TDRs, Excluding Loans Acquired, Segregated by Class of Loans $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)
Consumer:
Number of loans	8	15	2
Balance Prior to TDR	$ 610	$ 1,338	$ 1,630
Balance	560	1,267	1,031
Extended Maturity [Member]
Consumer:
Modification type	$ 560	$ 1,267
Interest Rate Below Market Reduction [Member]
Consumer:
Modification type			$ 1,031
Consumer Portfolio Segment [Member]
Consumer:
Number of loans	1	1
Balance Prior to TDR	$ 14	$ 14
Balance	14	14
Consumer Portfolio Segment [Member] \| Extended Maturity [Member]
Consumer:
Modification type	$ 14	$ 14
Consumer Portfolio Segment [Member] \| Other Loans [Member]
Consumer:
Number of loans	1	1
Balance Prior to TDR	$ 14	$ 14
Balance	14	14
Consumer Portfolio Segment [Member] \| Other Loans [Member] \| Extended Maturity [Member]
Consumer:
Modification type	$ 14	$ 14
Commercial Real Estate Portfolio Segment [Member]
Consumer:
Number of loans	7	14	1
Balance Prior to TDR	$ 596	$ 1,324	$ 1,031
Balance	546	1,253	1,031
Commercial Real Estate Portfolio Segment [Member] \| Extended Maturity [Member]
Consumer:
Modification type	$ 546	$ 1,253
Commercial Real Estate Portfolio Segment [Member] \| Interest Rate Below Market Reduction [Member]
Consumer:
Modification type			$ 1,031
Commercial Real Estate Portfolio Segment [Member] \| Single Family Residential Loans [Member]
Consumer:
Number of loans	2	8	1
Balance Prior to TDR	$ 249	$ 958	$ 1,031
Balance	207	914	1,031
Commercial Real Estate Portfolio Segment [Member] \| Single Family Residential Loans [Member] \| Extended Maturity [Member]
Consumer:
Modification type	$ 207	$ 914
Commercial Real Estate Portfolio Segment [Member] \| Single Family Residential Loans [Member] \| Interest Rate Below Market Reduction [Member]
Consumer:
Modification type			$ 1,031
Commercial Real Estate Portfolio Segment [Member] \| Other Commercial Loans [Member]
Consumer:
Number of loans	5	6
Balance Prior to TDR	$ 347	$ 366
Balance	339	339
Commercial Real Estate Portfolio Segment [Member] \| Other Commercial Loans [Member] \| Extended Maturity [Member]
Consumer:
Modification type	$ 339	$ 339
Commercial Portfolio Segment [Member]
Consumer:
Number of loans			1
Balance Prior to TDR			$ 599
Commercial Portfolio Segment [Member] \| Commercial Loans [Member]
Consumer:
Number of loans			1
Balance Prior to TDR			$ 599

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- Definition

Financial impact on date of restructure.

+ References

No definition available.

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- Definition

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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