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Net Loss Per Share
12 Months Ended
Dec. 31, 2017
Earnings Per Share [Abstract]  
Net Loss Per Share

10.

Net Loss Per Share

The following securities were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the three years presented (in thousands):

 

 

 

Years Ended December 31,

 

 

 

2017

 

 

2016

 

 

2015

 

Employee stock options

 

 

11,550

 

 

 

13,660

 

 

 

13,583

 

RSUs outstanding

 

 

1,562

 

 

 

1,211

 

 

 

865

 

Warrants

 

 

4

 

 

 

4

 

 

 

7

 

 

 

 

13,116

 

 

 

14,875

 

 

 

14,455