Net Loss Per Common Share (Tables)
9 Months Ended
Sep. 30, 2016
Earnings Per Share [Abstract]  
Shares Outstanding Excluded from Calculation of Diluted Net Loss Per Share

The shares outstanding at the end of the respective periods presented in the table below were excluded from the calculation of diluted net loss per share due to their anti-dilutive effect (in thousands):

 

 

 

Three and Nine Months Ended September 30,

 

 

 

2016

 

 

2015

 

Convertible senior notes

 

 

4,646

 

 

 

4,646

 

Common shares under options and awards

 

 

3,772

 

 

 

5,232

 

Total potential dilutive shares

 

 

8,418

 

 

 

9,878