Income per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income per Common Share [Abstract]
Basic net income per common share	$ 0.16	$ 0.17	$ 0.26	$ 0.27
Diluted net income per common share	$ 0.16	$ 0.17	$ 0.26	$ 0.27
Numerator:
Net income	$ 851	$ 870	$ 1,345	$ 1,390
Denominator:
Weighted average common shares outstanding	5,212	5,138	5,200	5,117
Dilutive potential common shares	32	13	6	4
Shares used in diluted net income per common share calculations	5,244	5,151	5,206	5,121
Shares excluded from diluted weighted shares outstanding	22,065	100,196	64,041	132,247