Note 8 - Other Real Estate Owned - Changes in OREO (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Balance at beginning of year	$ 1,423	$ 502	$ 913
Additions to other real estate owned	147	4,059	688
Dispositions of other real estate owned	(745)	(3,138)	(809)
Valuation adjustments in the period	(66)		(290)
Balance at ending of year	$ 759	$ 1,423	$ 502