Earnings Per Share and Capital Transactions (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Computation of basic earnings per common share
Net income	$ 1,371	$ 2,105
Weighted average common shares outstanding	4,231,589	4,326,734
Net effect of dilutive common share equivalents	14,530	9,507
Adjusted average shares outstanding-dilutive	4,246,119	4,336,241
Basic earnings per share	$ 0.32	$ 0.49
Diluted earnings per share	$ 0.32	$ 0.49