Convertible Subordinated Notes (Tables)
 9 Months Ended
Sep. 30, 2014
Convertible Subordinated Notes [Abstract]  
Schedule of Liability and Equity Components of Convertible Subordinated Notes
The carrying values of the liability and equity components of the Notes at September 30, 2014 are reflected in our Consolidated Balance Sheets as follows (in thousands):
 
September 30, 2014
Long-term liabilities:
 
Principal amount
$
143,750

Unamortized discount of liability component
(30,013
)
Carrying value of the liability component
$
113,737

 
 
Equity component carrying value
$
17,973