Note 13 - Earnings Per Share - Calculation of Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net income	$ 2,063	$ 2,635
Basic (in shares)	20,172,498	18,720,502
Plus: Common share equivalents (in shares)	4,067	13,150
Diluted weighted-average number of common shares outstanding (in shares)	20,176,565	18,733,652
Basic (in dollars per share)	$ 0.10	$ 0.14
Diluted (in dollars per share)	$ 0.10	$ 0.14