Description of Business and Basis of Presentation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Schedule of computation of basic and diluted net income (loss) per share
Net loss	$ (9,376)	$ (1,181)	$ (18,717)	$ (862)
Weighted-average common shares outstanding	30,323	29,206	29,886	29,127
Net loss per share
Basic and diluted (in dollars per share)	$ (0.31)	$ (0.04)	$ (0.63)	$ (0.03)