Net Income Per Common Share (Computation of Basic and Diluted Net Income Per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Numerator:
Net income	$ 1,222	$ 2,125
Denominator:
Weighted average number of shares of common stock outstanding	8,761,538	7,261,966
Weighted average effect of dilutive stock options and other stock compensation	98,987	231,006
Weighted average number of shares of common stock outstanding, as adjusted	8,860,525	7,492,972
Net income per common share:
Net income per common share - Basic	$ 0.14	$ 0.29
Net income per common share - Diluted	$ 0.14	$ 0.28