Note 3 - Regulatory Matters (Details) - Actual Capital Positions and Ratios - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Parent Company [Member]
Note 3 - Regulatory Matters (Details) - Actual Capital Positions and Ratios [Line Items]
Tier I common equity	$ 54,542
Tier I capital	64,542	$ 59,930
Total risk-based capital	83,341	93,521
Total risk-weighted assets	718,203	683,956
Total average assets (for Tier I leverage ratio)	972,512	990,346
Subordinated notes	9,800	25,000
Allowable portion of allowance for loan losses	8,999	8,591
Total tier II capital	18,799	$ 33,591
Subsidiaries [Member]
Note 3 - Regulatory Matters (Details) - Actual Capital Positions and Ratios [Line Items]
Tier I common equity	90,171
Tier I capital	90,171	$ 96,816
Total risk-based capital	99,165	105,403
Total risk-weighted assets	717,805	683,576
Total average assets (for Tier I leverage ratio)	971,944	990,407
Allowable portion of allowance for loan losses	8,994	8,587
Total tier II capital	$ 8,994	$ 8,587