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Net loss per share
 9 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Net loss per share Net loss per share
Basic earnings per share is computed by dividing net loss by the weighted-average number of common shares outstanding. Diluted earnings per share is computed by dividing net loss by the weighted-average number of common shares plus the effect of any dilutive potential common shares outstanding during the period.
The following tables set forth the computation of basic and diluted net loss per share:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2019
 
2018
 
2019
 
2018
 
Numerator
 

 
 

 
 

 
 

 
Net loss
$
(59,997
)
 
$
(50,969
)
 
$
(173,899
)
 
$
(79,751
)
 
Denominator
 

 
 

 
 

 
 

 
Denominator for basic and diluted net loss per share
56,463,528

 
48,096,521

 
57,798,968

 
45,310,690

 
Net loss per share:
 

 
 

 
 

 
 

 
Basic and diluted
$
(1.06
)
*
$
(1.06
)
*
$
(3.01
)
*
$
(1.76
)
*
 
*In the three and nine months ended September 30, 2019 and 2018, the Company experienced a net loss and therefore did not report any dilutive share impact.
The following table shows historical dilutive common share equivalents outstanding, which are not included in the above historical calculation, as the effect of their inclusion is anti-dilutive during each period.
 
As of September 30,
 
2019
 
2018
Stock Options
10,743,181

 
9,545,522

Unvested restricted stock awards and units
650,103

 
580,347

Total
11,393,284

 
10,125,869