Note 14 - Earnings Per Share - Computations of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Basic weighted average shares outstanding (in shares)	6,419,654	5,426,605
Dilutive effect of stock compensation (in shares)	17,950	63,742
Diluted weighted average shares outstanding (in shares)	6,437,604	5,490,347
Net income available to common shareholders	$ 10,872	$ 4,982
Basic earnings per share (in dollars per share)	$ 1.69	$ 0.92
Diluted earnings per share (in dollars per share)	$ 1.69	$ 0.91