Note 18 - Earnings Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 7,954	$ 4,211
Preferred stock dividends	182	91
Net income available to common stockholders	$ 7,772	$ 4,120
Average common shares outstanding (in shares)	2,699,397	2,377,277
Add: Dilutive effects of restricted stock awards (in shares)	19,349	18,400
Average shares and dilutive potential common shares (in shares)	2,718,746	2,395,677
Basic (in dollars per share)	$ 2.88	$ 1.73
Diluted (in dollars per share)	$ 2.86	$ 1.72
Restricted stock awards not considered in computing earnings per share because they were antidulitive (in shares)