Note 5 - Loans (Details) - Internal Risk Rating by Loan Class - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	$ 716,639	$ 660,898
Pass [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	661,712	594,575
Watch [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	16,809	24,359
Special Mention [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	15,375	4,905
Substandard [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	22,743	37,059
Commercial Portfolio Segment [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	132,805	150,253
Commercial Portfolio Segment [Member] | Pass [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	108,696	121,282
Commercial Portfolio Segment [Member] | Watch [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	10,240	14,116
Commercial Portfolio Segment [Member] | Special Mention [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	9,587	4,018
Commercial Portfolio Segment [Member] | Substandard [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	4,282	10,837
Commercial Real Estate Portfolio Segment [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	427,992	364,306
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	28,319	30,099
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Pass [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	28,291	30,056
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Watch [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	28	43
Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	243,374	213,883
Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member] | Pass [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	234,177	201,155
Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member] | Watch [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	917	1,953
Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member] | Special Mention [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	1,588	869
Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member] | Substandard [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	6,692	9,906
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	156,299	120,324
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member] | Pass [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	149,327	111,689
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member] | Watch [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	3,864	5,864
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member] | Special Mention [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	1,687
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member] | Substandard [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	1,421	2,771
Residential Portfolio Segment [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	105,969	110,967
Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	45,473	44,981
Residential Portfolio Segment [Member] | Home Equity Loan [Member] | Pass [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	41,149	41,624
Residential Portfolio Segment [Member] | Home Equity Loan [Member] | Watch [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	1,760	2,380
Residential Portfolio Segment [Member] | Home Equity Loan [Member] | Special Mention [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	1,682
Residential Portfolio Segment [Member] | Home Equity Loan [Member] | Substandard [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	882	977
Residential Portfolio Segment [Member] | Individual Tax Identification Number Loan [Member] | Real Estate Loan [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	49,106	52,830
Residential Portfolio Segment [Member] | Individual Tax Identification Number Loan [Member] | Real Estate Loan [Member] | Pass [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	41,480	42,721
Residential Portfolio Segment [Member] | Individual Tax Identification Number Loan [Member] | Real Estate Loan [Member] | Substandard [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	7,626	10,109
Residential Portfolio Segment [Member] | Mortgage Receivable [Member] | Real Estate Loan [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	11,390	13,156
Residential Portfolio Segment [Member] | Mortgage Receivable [Member] | Real Estate Loan [Member] | Pass [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	9,041	10,769
Residential Portfolio Segment [Member] | Mortgage Receivable [Member] | Real Estate Loan [Member] | Special Mention [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	575
Residential Portfolio Segment [Member] | Mortgage Receivable [Member] | Real Estate Loan [Member] | Substandard [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	1,774	2,387
Consumer Portfolio Segment [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	49,873	35,372
Consumer Portfolio Segment [Member] | Pass [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	49,551	35,279
Consumer Portfolio Segment [Member] | Watch [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans		3
Consumer Portfolio Segment [Member] | Special Mention [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	256	18
Consumer Portfolio Segment [Member] | Substandard [Member]
Note 5 - Loans (Details) - Internal Risk Rating by Loan Class [Line Items]
Gross loans	$ 66	$ 72