Note 2 - Earnings Per Share - 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	$ 773	$ 2,925
Basic (in shares)	5,431,199	5,432,856
Dilutive Effect of Common Stock Equivalents (Stock Options and Restricted Stock) (in shares)	25,668	18,622
Weighted-Average Diluted Common Shares and Common Stock Equivalents Outstanding (in shares)	5,456,867	5,451,478
EARNINGS PER SHARE
Basic (in dollars per share)	$ 0.14	$ 0.54
Diluted (in dollars per share)	$ 0.14	$ 0.54