Convertible Preferred Stock (Tables)

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Schedule of Convertible Preferred Stock

Convertible preferred stock (“preferred stock”) as of December 31, 2013 consisted of the following (in thousands, except share and per share data):

At December 31, 2013 -

					Per Share
	Shares				Liquidation		Carrying
Series	Authorized		Outstanding		Preference		Value
Series A		22,000,000		22,000,000	$	0.45	$	9,900
Series B		46,425,950		44,425,953		0.45		18,631
Series C		36,444,444		36,444,444		0.56		19,301
Series D-1		17,777,777		17,777,777		0.56		9,665
Series D-2		13,168,291		—		0.76		—
		135,816,462		120,648,174			$	57,497