Note 9 - Other Real Estate Owned - Other Real Estate Owned (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Other Real Estate Owned	$ 4,031	$ 5,489	$ 6,187	$ 10,673
Construction and Land Development OREO [Member]
Other Real Estate Owned	3,050	4,433
Residential Real Estate OREO [Member]
Other Real Estate Owned		157
Farmland and Other Commercial Enterprises OREO [Member]
Other Real Estate Owned	981	899
OREO [Member]
Other Real Estate Owned	$ 4,031	$ 5,489