Net Income (Loss) Per Share
 6 Months Ended
Jun. 30, 2015
Earnings Per Share [Abstract]  
Net Income (Loss) Per Share
Net Income (Loss) Per Share
The following table presents the computation of basic and diluted net loss per share:    
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2015
 
2014
 
2015
 
2014
 
(in thousands, except per share amounts)
Net loss per share - basic and diluted
 
 
 
 
 
 
 
Net loss
$
(18,979
)
 
$
(4,574
)
 
$
(29,006
)
 
$
(10,203
)
Weighted average shares used to compute basic and diluted net loss per share
71,426

 
68,292

 
70,961

 
65,882

Net loss per share - basic and diluted
$
(0.27
)
 
$
(0.07
)
 
$
(0.41
)
 
$
(0.15
)

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 June 30,
 
Six Months Ended June 30,
 
2015
 
2014
 
2015
 
2014
 
(in thousands)
Shares subject to outstanding common stock awards
11,326

 
11,430

 
11,326

 
11,430