Net Loss Per Share - Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Net loss	$ (605)	$ (269)	$ (1,316)	$ (503)
Less: preferred stock dividends	3	5	6	10
Net loss attributable to common stockholders	$ (608)	$ (274)	$ (1,322)	$ (513)
Weighted average shares outstanding - basic and diluted (in shares)	35,492	35,400	35,474	35,466
Basic and diluted net loss per share (in dollars per share)	$ (0.02)	$ (0.01)	$ (0.04)	$ (0.01)