Note 6 - Loans (Details) - Internal Risk Rating by Loan Class - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	$ 699,774	$ 660,898
Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	640,092	594,575
Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	18,063	24,359
Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	12,462	4,905
Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	29,157	37,059
Commercial Portfolio Segment [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	143,088	150,253
Commercial Portfolio Segment [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	117,745	121,282
Commercial Portfolio Segment [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	12,606	14,116
Commercial Portfolio Segment [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	4,601	4,018
Commercial Portfolio Segment [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	8,136	10,837
Commercial Real Estate Portfolio Segment [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	402,214	364,306
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	27,858	30,099
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	27,822	30,056
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	36	43
Commercial Real Estate Portfolio Segment [Member] | Other Loan [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	374,356	334,207
Commercial Real Estate Portfolio Segment [Member] | Other Loan [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	355,529	312,844
Commercial Real Estate Portfolio Segment [Member] | Other Loan [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	3,673	7,817
Commercial Real Estate Portfolio Segment [Member] | Other Loan [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	5,317	869
Commercial Real Estate Portfolio Segment [Member] | Other Loan [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	9,837	12,677
Residential Portfolio Segment [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	109,921	110,967
Residential Portfolio Segment [Member] | Real Estate Loan [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	63,458	65,986
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	52,728	53,490
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	579
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	10,151	12,496
Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	46,463	44,981
Residential Portfolio Segment [Member] | Home Equity Loan [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	42,071	41,624
Residential Portfolio Segment [Member] | Home Equity Loan [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	1,745	2,380
Residential Portfolio Segment [Member] | Home Equity Loan [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	1,683
Residential Portfolio Segment [Member] | Home Equity Loan [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	964	977
Consumer Portfolio Segment [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	44,482	35,210
Consumer Portfolio Segment [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	44,197	35,279
Consumer Portfolio Segment [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	3	3
Consumer Portfolio Segment [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	282	18
Consumer Portfolio Segment [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	$ 69	$ 72