Note 8 - Other Real Estate Owned (Details) - Other Real Estate Owned - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Note 8 - Other Real Estate Owned (Details) - Other Real Estate Owned [Line Items]
Other Real Estate Owned	$ 22,868	$ 31,960	$ 34,766	$ 37,826
Construction and Land Development OREO [Member]
Note 8 - Other Real Estate Owned (Details) - Other Real Estate Owned [Line Items]
Other Real Estate Owned	13,576	17,628
Residential Real Estate OREO [Member]
Note 8 - Other Real Estate Owned (Details) - Other Real Estate Owned [Line Items]
Other Real Estate Owned	1,084	2,219
Farmland and Other Commercial Enterprises OREO [Member]
Note 8 - Other Real Estate Owned (Details) - Other Real Estate Owned [Line Items]
Other Real Estate Owned	8,208	12,113
OREO [Member]
Note 8 - Other Real Estate Owned (Details) - Other Real Estate Owned [Line Items]
Other Real Estate Owned	$ 22,868	$ 31,960