Note 5 - Other Real Estate Owned - Change in OREO (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Balance, Beginning	$ 4,256	$ 6,439
Additions	674	1,725
Sales of OREO	(2,718)	(3,787)
Gains (Losses) on Sale	162	213
Provision for Losses	(201)	(334)
Balance, Ending	$ 2,173	$ 4,256