Note 5 - Loans (Details) - Gross Loans (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Note 5 - Loans (Details) - Gross Loans [Line Items]
Loans, gross	$ 832,029	$ 805,059	$ 755,878
Percentage of loans, gross	100.00%	100.00%
Commercial Real Estate Loans [Member]
Note 5 - Loans (Details) - Gross Loans [Line Items]
Loans, gross	430,098	430,025	445,153
Percentage of loans, gross	51.70%	53.40%
Single Family Residential [Member]
Note 5 - Loans (Details) - Gross Loans [Line Items]
Loans, gross	217,174	204,439	176,454
Percentage of loans, gross	26.10%	25.40%
Commercial and Industrial [Member]
Note 5 - Loans (Details) - Gross Loans [Line Items]
Loans, gross	96,237	80,927	72,477
Percentage of loans, gross	11.60%	10.00%
Consumer [Member]
Note 5 - Loans (Details) - Gross Loans [Line Items]
Loans, gross	75,921	76,984	51,319
Percentage of loans, gross	9.10%	9.60%
Other Financing Receivable [Member]
Note 5 - Loans (Details) - Gross Loans [Line Items]
Loans, gross	$ 12,599	$ 12,684
Percentage of loans, gross	1.50%	1.60%