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Net Loss per Share (Tables)
 9 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Schedule of Calculation of Basic and Diluted Net Loss Per Share
The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data): 
 
 
Three months ended September 30,
 
Nine months ended September 30,
 
 
2019
 
2018
 
2019
 
2018
Net loss
 
$
(272,035
)
 
$
(151,726
)
 
$
(654,362
)
 
$
(360,235
)
Weighted average common shares used for basic and diluted net loss per share computation
 
92,540

 
89,792

 
91,820

 
89,144

Net loss per common share:
 
 
 
 
 
 
 
 
Basic and Diluted
 
$
(2.94
)
 
$
(1.69
)
 
$
(7.13
)
 
$
(4.04
)