Common Stock (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Reserved Shares of Common Stock

As of June 30, 2017, and December 31, 2016, the Company’s certificate of incorporation authorizes the issuance of 500,000 shares of $0.001 par value common stock. Reserved shares of common stock are as follows:

	June 30,		December 31,
	2017		2016
Options or restricted stock units ("RSUs") available for future grant under stock option plans		8,554		5,875
Options outstanding under stock option plans		3,270		3,749
RSUs outstanding under stock option plans		2,559		3,003
Shares available for future issuance under employee stock purchase plan		1,472		1,190
Shares to be issued in connection with acquisition of SocialMoov		—		464
		15,855		14,281