Preferred Stock (Tables)

12 Months Ended

Dec. 31, 2015

Equity [Abstract]

Components of Convertible and Redeemable Convertible Preferred Stock

The convertible and redeemable convertible preferred stock as of December 31, 2014 consisted of the following:

	December 31, 2014
	Shares Authorized		Shares Issued and Outstanding		Net Carrying Value		Liquidation Price Per Share		Aggregate Liquidation Preference		Redemption Value
	(in thousands, except share and per share data)
Convertible Preferred Stock:
Series A		1,843,894		224,564	$	2,543	$	11.324	$	2,543	$	—
Redeemable Convertible Preferred Stock:
Series B		13,134,880		1,752,634	$	19,504	$	12.268	$	21,502	$	19,504
Series B-1		16,122,618		1,392,300		6,979		3.656		5,091		6,979
Series C		19,812,349		2,487,770		21,052		5.642		14,035		21,052
Series D		85,000,000		11,409,360		94,297		5.510		62,865		94,297
Total redeemable convertible preferred stock		134,069,847		17,042,064	$	141,832			$	103,493	$	141,832
Total preferred stock		135,913,741		17,266,628	$	144,375			$	106,036	$	141,832

Change in Redemption Value of Convertible Preferred Stock

The following table sets forth the total adjustment to redemption value of each series of redeemable convertible preferred stock recognized during the following periods:

	Year Ended December 31,
	2015		2014		2013
	(in thousands)
Redeemable Convertible Preferred Stock
Series B	$	46,976	$	6,447	$	—
Series B-1		36,961		2,836		28
Series C		52,832		2,449		5,685
Series D		237,246		38,117		—
Total adjustment to redemption value on redeemable convertible preferred stock	$	374,015	$	49,849	$	5,713