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Net Loss Per Share (Tables)
 12 Months Ended
Dec. 31, 2016
Earnings Per Share [Abstract]  
Schedule of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders

Basic and diluted net loss per share attributable to common stockholders was calculated as follows for the years ended December 31, 2016, 2015 and 2014:

 

 

 

Year ended December 31,

 

(In thousands)

 

2016

 

 

2015

 

 

2014

 

Numerator:

 

 

 

 

 

 

 

 

 

 

 

 

Net loss

 

$

(71,893,959

)

 

$

(46,315,451

)

 

$

(27,313,664

)

Net loss:

 

$

(71,893,959

)

 

$

(46,315,451

)

 

$

(27,313,664

)

Denominator:

 

 

 

 

 

 

 

 

 

 

 

 

Weighted average common shares outstanding, basic

   and diluted

 

 

25,296,527

 

 

 

21,497,119

 

 

 

13,893,961

 

Net loss per share, basic and diluted

 

$

(2.84

)

 

$

(2.15

)

 

$

(1.97

)