Note 6 - Loans (Details) - Internal Risk Rating by Loan Class (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	$ 699,229	$ 660,898
Commercial Portfolio Segment [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	126,455	124,986
Commercial Portfolio Segment [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	15,052	14,116
Commercial Portfolio Segment [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	3,547	4,018
Commercial Portfolio Segment [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	7,990	10,837
Commercial Portfolio Segment [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	153,044	153,957
Commercial Real Estate Construction Financing Receivable [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	29,088	30,056
Commercial Real Estate Construction Financing Receivable [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	39	43
Commercial Real Estate Construction Financing Receivable [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	29,127	30,099
Commercial Real Estate Other Receivable [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	343,744	309,140
Commercial Real Estate Other Receivable [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	5,678	7,817
Commercial Real Estate Other Receivable [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	2,097	869
Commercial Real Estate Other Receivable [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	11,144	12,677
Commercial Real Estate Other Receivable [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	362,663	330,503
Residential One to Four Family [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	52,312	53,490
Residential One to Four Family [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	12,035	12,496
Residential One to Four Family [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	64,347	65,986
Residential Real Estate and Home Equities [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	42,405	41,624
Residential Real Estate and Home Equities [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	1,103	2,380
Residential Real Estate and Home Equities [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	1,271
Residential Real Estate and Home Equities [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	971	977
Residential Real Estate and Home Equities [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	45,750	44,981
Consumer Portfolio Segment [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	44,211	35,279
Consumer Portfolio Segment [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	3	3
Consumer Portfolio Segment [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	14	18
Consumer Portfolio Segment [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	70	72
Consumer Portfolio Segment [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	44,298	35,372
Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	638,215	594,575
Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	21,875	24,359
Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	6,929	4,905
Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Loans	$ 32,210	$ 37,059