Note 5 - Other Real Estate Owned - Change in OREO (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Balance, Beginning	$ 4,256	$ 6,439
Additions	597	1,725
Sales of OREO	(1,215)	(3,787)
Gains (Losses) on Sale	114	213
Provision for Losses	(157)	(334)
Balance, Ending	$ 3,595	$ 4,256