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Convertible Notes
3 Months Ended
Mar. 31, 2013
Debt Disclosure [Abstract]  
Convertible Notes
Convertible Notes
The Company’s convertible notes are shown in the following table:
(Dollars in thousands)
 
As of March 31, 2013
 
As of December 31, 2012
5% Convertible Senior Notes due 2014 (the “2014 Notes”)
 
$
172,500

 
$
172,500

Unamortized discount
 
(21,013
)
 
(24,944
)
Total convertible notes
 
$
151,487

 
$
147,556

Less current portion
 

 

Total long-term convertible notes
 
$
151,487

 
$
147,556



Interest expense related to the notes for the three months ended March 31, 2013 and 2012 was as follows:
 
Three Months Ended
 
March 31,
 
2013
 
2012
 
(In thousands)
2014 Notes coupon interest at a rate of 5%
$
2,157

 
$
2,157

2014 Notes amortization of discount and debt issuance costs at an additional effective interest rate of 11.7%
4,089

 
3,510

Total interest expense on convertible notes
$
6,246

 
$
5,667