Net Loss Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
BASIC AND DILUTED
Weighted average number of common shares outstanding	39,233	34,135	38,587	33,825
Number of shares for computation of net loss per share	39,233	34,135	38,587	33,825
Net loss	$ (3,874)	$ (3,120)	$ (7,882)	$ (6,690)
Net loss per share - basic and diluted	$ (0.10)	$ (0.09)	$ (0.20)	$ (0.20)