Note 5 - Other Real Estate Owned (Details) - Other Real Estate Owned - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Note 5 - Other Real Estate Owned (Details) - Other Real Estate Owned [Line Items]
Other Real Estate Owned	$ 21,843	$ 31,960	$ 37,826
Construction and Land Development OREO [Member]
Note 5 - Other Real Estate Owned (Details) - Other Real Estate Owned [Line Items]
Other Real Estate Owned	12,997	17,628
Residential Real Estate OREO [Member]
Note 5 - Other Real Estate Owned (Details) - Other Real Estate Owned [Line Items]
Other Real Estate Owned	960	2,219
Farmland and Other Commercial Enterprises OREO [Member]
Note 5 - Other Real Estate Owned (Details) - Other Real Estate Owned [Line Items]
Other Real Estate Owned	7,886	12,113
OREO [Member]
Note 5 - Other Real Estate Owned (Details) - Other Real Estate Owned [Line Items]
Other Real Estate Owned	$ 21,843	$ 31,960