Note 3 - Acquisition Activity - Pro Forma Financial Information (Details) - The Peoples Bank [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Summary of Operations
Net interest income	$ 37,630	$ 35,104
Provision for loan and lease losses	2,622	2,242
Net interest income after provision for loan and lease losses	35,008	32,862
Non-interest income	5,786	5,472
Non-interest expense	35,251	32,666
Income before income taxes	5,543	5,668
Provision for income taxes	1,440	4,037
Net income	$ 4,103	$ 1,631
Basic net income per share (in dollars per share)	$ 0.66	$ 0.26
Diluted net income per share (in dollars per share)	$ 0.62	$ 0.24