Note 6 - Loans (Details) - Gross Loans - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Note 6 - Loans (Details) - Gross Loans [Line Items]
Loans, gross	$ 824,008	$ 805,059	$ 753,049
Percentage of loans, gross	100.00%	100.00%
Commercial Real Estate Portfolio Segment [Member]
Note 6 - Loans (Details) - Gross Loans [Line Items]
Loans, gross	$ 425,154	$ 430,025	441,170
Percentage of loans, gross	51.60%	53.40%
Single Family ResidentialPortfolioSegment [Member]
Note 6 - Loans (Details) - Gross Loans [Line Items]
Loans, gross	$ 220,879	$ 204,439	177,179
Percentage of loans, gross	26.80%	25.40%
Commercial and Industrial Portfolio Segment[Member]
Note 6 - Loans (Details) - Gross Loans [Line Items]
Loans, gross	$ 88,489	$ 80,927	72,260
Percentage of loans, gross	10.70%	10.00%
Consumer Portfolio Segment [Member]
Note 6 - Loans (Details) - Gross Loans [Line Items]
Loans, gross	$ 76,359	$ 76,984	51,849
Percentage of loans, gross	9.30%	9.60%
Unallocated Financing Receivables [Member]
Note 6 - Loans (Details) - Gross Loans [Line Items]
Loans, gross	$ 13,127	$ 12,684	$ 10,591
Percentage of loans, gross	1.60%	1.60%