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NET LOSS PER SHARE
 6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
NET LOSS PER SHARE
NET LOSS PER SHARE

We compute basic net loss per share by dividing net loss attributable to our common stockholders by the weighted average number of shares of common stock outstanding during the period. We exclude all outstanding options and unvested restricted stock as such securities are anti-dilutive for all periods presented.

Basic and diluted net loss per share is calculated as follows (in thousands, except per share amounts):
 
 
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
 
2017
 
2016
 
2017
 
2016
Net loss attributable to common stock
 
$
(19,283
)

$
(10,693
)
 
$
(27,513
)

$
(20,336
)
Weighted average shares outstanding, basic and diluted
 
79,507

 
52,062

 
71,971


52,241

 
 


 


 


 


Net loss per share, basic and diluted
 
$
(0.24
)
 
$
(0.21
)
 
$
(0.38
)
 
$
(0.39
)
Anti-dilutive securities excluded from diluted net loss per share calculation for stock-based compensation plans
 
6,255

 
6,084

 
6,255

 
6,084