Earnings per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Numerator:
Net income	$ 2,006	$ 1,270
Denominator for basic earnings per share - weighted average shares outstanding	6,407	6,392
Effect of dilutive common shares	29	34
Denominator for diluted earnings per share - adjusted weighted average shares outstanding	6,436	6,426
Basic earnings per share (in dollars per share)	$ 0.31	$ 0.20
Diluted earnings per share (in dollars per share)	$ 0.31	$ 0.20
Antidilutive shares excluded from computation of average dilutive earnings per share	126	47