Income (loss) per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income per Common Share [Abstract]
Basic net income per common share	$ 0.10	$ 0.06	$ 0.10	$ 0.10
Diluted net income per common share	$ 0.10	$ 0.06	$ 0.10	$ 0.10
Numerator:
Net income	$ 511	$ 323	$ 494	$ 520
Denominator:
Weighted average common shares outstanding	5,206	5,117	5,194	5,107
Dilutive potential common shares	13	11	0	0
Shares used in diluted net income per common share calculations	5,219	5,128	5,194	5,107
Shares excluded from diluted weighted shares outstanding	50,919	107,247	96,004	132,273