Net Income (Loss) Per Share (Tables)
 9 Months Ended
Sep. 30, 2016
Earnings Per Share [Abstract]  
Schedule of Computation of Earnings Per Share, Basic and Diluted
The following table presents the computation of basic and diluted net loss per share:    
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2016
 
2015
 
2016
 
2015
 
(in thousands, except per share amounts)
Net loss per share - basic and diluted
 
 
 
 
 
 
 
Net loss
$
(30,261
)
 
$
(13,373
)
 
$
(123,361
)
 
$
(42,379
)
Weighted average shares outstanding used to compute basic and diluted net loss per share
75,647

 
72,089

 
74,743

 
71,341

Net loss per share - basic and diluted
$
(0.40
)
 
$
(0.19
)
 
$
(1.65
)
 
$
(0.59
)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
The following shares subject to outstanding awards were excluded from the computation of diluted net loss per share for the periods presented as their effect would have been antidilutive:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2016
 
2015
 
2016
 
2015
 
(in thousands)
Shares subject to outstanding common stock awards
12,717

 
11,431

 
12,717

 
11,431