Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2015

Equity [Abstract]

Convertible Preferred Stock

Convertible Preferred Stock

As of December 31, 2013, the Company had the following shares of preferred stock authorized and outstanding:

	Designated  Shares	Issued and Outstanding Shares	Aggregate  Liquidation Preference		Amount
Series A	68,025,100	66,100,340	$	17,599	$	17,402
Series B	65,642,104	65,577,300	12,268		12,164
Series C	62,486,436	62,486,436	24,490		24,388
Series D	36,030,712	36,030,712	32,044		31,943
Series E	14,285,712	10,000,000	17,500		17,347
Total convertible preferred stock	246,470,064	240,194,788	$	103,901	$	103,244

Shares of Common Stock Reserved for Future Issuance

As of December 31, 2015 and 2014, the Company had shares of common stock reserved for future issuance as follows:

December 31,	2015	2014
Options and unvested RSUs outstanding	52,652,310	57,386,829
Available for future stock option and RSU grants	33,560,939	36,561,469
Available for ESPP	2,589,991	3,000,000
Total reserved for future issuance	88,803,240	96,948,298