Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Numerator:
Net loss	$ (2,097)	$ (2,023)	$ (3,138)	$ (5,919)
Denominator
Basic weighted average common shares outstanding (shares)	6,786	7,092	6,784	7,042
Effect of dilutive securities (shares)	0	0	0	0
Diluted weighted average common shares outstanding (shares)	6,786	7,092	6,784	7,042
Net loss per common share
Net loss per share — basic (usd per share)	$ (0.31)	$ (0.29)	$ (0.46)	$ (0.84)
Net loss per share — diluted (usd per share)	$ (0.31)	$ (0.29)	$ (0.46)	$ (0.84)