Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets (liabilities):
Deferred compensation plans	$ 200	$ 205
Allowance for loan losses	876	872
Accrued expenses	45	155
Unrealized loss on securities available for sale	1,335
Other	353	351
Deferred tax assets	2,809	1,583
Depreciation	(632)	(550)
Deferred loan fees and costs	(261)	(186)
FHLB stock dividends	(56)	(262)
Prepaid expenses	(295)	(258)
Acquisition purchase accounting adjustments	(304)	(181)
Unrealized gain on securities available for sale		(261)
Deferred tax liabilities	(1,548)	(1,698)
Net deferred tax liability	$ 1,261
Net deferred tax asset (liability)		$ (115)