Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Restructured as TDRs, Excluding Loans Acquired, Segregated by Class of Loans (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Real estate:
Number of Loans	3	1
Balance Prior to TDR	$ 2,025,000	$ 321,000
Balance	1,427,000	311,000
Change in Maturity Date [Member] \| Real Estate Loans [Member]
Real estate:
Financial Impact	396,000
Change in Maturity Date [Member]
Real estate:
Financial Impact	396,000
Change in Rate [Member] \| Single Family Residential Loans [Member] \| Real Estate Loans [Member]
Real estate:
Financial Impact		311,000
Change in Rate [Member] \| Real Estate Loans [Member]
Real estate:
Financial Impact	1,031,000	311,000
Change in Rate [Member]
Real estate:
Financial Impact	1,031,000	311,000
Commercial [Member] \| Commercial Loans [Member]
Real estate:
Number of Loans	1
Balance Prior to TDR	598,000
Single Family Residential Loans [Member] \| Real Estate Loans [Member]
Real estate:
Number of Loans		1
Balance Prior to TDR		321,000
Balance		311,000
Real Estate Loans [Member]
Real estate:
Number of Loans	2	1
Balance Prior to TDR	1,427,000	321,000
Balance	1,427,000	311,000
Commercial Loans [Member]
Real estate:
Number of Loans	1
Balance Prior to TDR	$ 598,000

Financial impact on date of restructure.

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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=35738203&loc=SL6953676-111524

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+ References

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- Definition

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

+ References

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