v3.5.0.2
Net Loss Per Common Share (Tables)
9 Months Ended
Sep. 30, 2016
Earnings Per Share [Abstract]  
Historical Outstanding Anti-Dilutive Securities
Historical outstanding anti-dilutive securities not included in diluted net loss per share attributable to common stockholders calculation is as follows (in millions): 
 
Three Months Ended 
 September 30,
 
Nine Months Ended 
 September 30,
 
2016
 
2015
 
2016
 
2015
Options outstanding to purchase common stock
0.8

 
1.6

 
0.8

 
1.6

Unvested restricted stock units
3.7

 
4.2

 
3.7

 
4.2

Total
4.5

 
5.8

 
4.5

 
5.8