Note 8 - Other Real Estate Owned - Activity Within Other Real Estate Owned (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Balance beginning of period	$ 5,852	$ 13,224
Real estate acquired from borrowers	2,500	1,725
Valuation allowance	(200)	(1,100)
Properties sold	(5,458)	(7,997)
Balance end of period	$ 2,694	$ 5,852