Common Stock (Tables)

6 Months Ended

Jun. 30, 2014

Equity [Abstract]

Reserved Shares of Common Stock

Reserved shares of common stock are as follows:

	June 30, 2014		December 31, 2013
Options available for future grant		3,925		4,585
Options outstanding		6,260		4,855
RSUs outstanding		363		—
Shares available for future issuance under ESPP		1,094		854
		11,642		10,294