Note 12 - Earnings Per Common Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Weighted average number of common shares outstanding used in basic earnings per common share calculation (in shares)	4,598,234	4,236,861
Restricted stock awards, options, and warrants (in shares)	28,503	665,389
Weighted average number of shares outstanding adjusted for effect of dilutive securities (in shares)	4,626,737	4,902,250
Income available to common shareholders	$ 1,620	$ 1,445
Basic earnings per share (in dollars per share)	$ 0.35	$ 0.34
Diluted earnings per share (in dollars per share)	$ 0.35	$ 0.29