Note 6 - Loans (Details) - Internal Risk Rating by Loan Class - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	$ 718,533	$ 660,898
Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	660,570	594,575
Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	17,532	24,359
Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	13,847	4,905
Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	26,584	37,059
Commercial Portfolio Segment [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	144,749	150,253
Commercial Portfolio Segment [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	119,969	121,282
Commercial Portfolio Segment [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	11,330	14,116
Commercial Portfolio Segment [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	6,644	4,018
Commercial Portfolio Segment [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	6,806	10,837
Commercial Real Estate Portfolio Segment [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	419,060	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	29,701	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	29,669	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	32	43
Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	237,597	213,883
Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	227,725	201,155
Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	694	1,953
Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	2,827	869
Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	6,351	9,906
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	151,762	120,324
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	143,882	111,689
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	3,752	5,864
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	1,848
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	2,280	2,771
Commercial Real Estate Portfolio Segment [Member] | Individual Tax Identification Number Loan [Member] | Real Estate Loan [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans		52,830
Residential Portfolio Segment [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	108,080	110,967
Residential Portfolio Segment [Member] | Commercial Non-owner Occupied [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	237,597
Residential Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	151,762
Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	45,733	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	41,416	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	1,724	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	910	977
Residential Portfolio Segment [Member] | Individual Tax Identification Number Loan [Member] | Real Estate Loan [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	50,162	52,830
Residential Portfolio Segment [Member] | Individual Tax Identification Number Loan [Member] | Real Estate Loan [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	41,908	42,721
Residential Portfolio Segment [Member] | Individual Tax Identification Number Loan [Member] | Real Estate Loan [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	8,254	10,109
Residential Portfolio Segment [Member] | Mortgage Receivable [Member] | Real Estate Loan [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	12,185	13,156
Residential Portfolio Segment [Member] | Mortgage Receivable [Member] | Real Estate Loan [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	9,694	10,769
Residential Portfolio Segment [Member] | Mortgage Receivable [Member] | Real Estate Loan [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	576
Residential Portfolio Segment [Member] | Mortgage Receivable [Member] | Real Estate Loan [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	1,915	2,387
Consumer Portfolio Segment [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	46,644	35,372
Consumer Portfolio Segment [Member] | Pass [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	46,307	35,279
Consumer Portfolio Segment [Member] | Watch [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans		3
Consumer Portfolio Segment [Member] | Special Mention [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	269	18
Consumer Portfolio Segment [Member] | Substandard [Member]
Note 6 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	$ 68	$ 72