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Debt (Tables)
6 Months Ended
Jun. 30, 2014
Debt [Abstract]  
Par value and fair value of debt
The par value and fair value of our debt at June 30, 2014 and December 31, 2013 appears in the table below.

 
 
Par Value
  
Total Fair
Value
  
Quoted Prices in
Active Markets
for Identical
Assets (Level 1)
  
Significant
Other
Observable
Inputs
(Level 2)
  
Significant
Unobservable
Inputs
(Level 3)
 
 
 
(In thousands)
 
June 30, 2014
 
  
  
  
  
 
Liabilities:
 
  
  
  
  
 
Senior Notes
 
$
61,953
  
$
64,973
  
$
64,973
  
$
-
  
$
-
 
Convertible Senior Notes due 2017
  
345,000
   
403,650
   
403,650
   
-
   
-
 
Convertible Senior Notes due 2020
  
500,000
   
746,750
   
746,750
   
-
   
-
 
Convertible Junior Subordinated Debentures
  
389,522
   
482,033
   
-
   
482,033
   
-
 
Total Debt
 
$
1,296,475
  
$
1,697,406
  
$
1,215,373
  
$
482,033
  
$
-
 
 
                    
December 31, 2013
                    
Liabilities:
                    
Senior Notes
 
$
82,883
  
$
85,991
  
$
85,991
  
$
-
  
$
-
 
Convertible Senior Notes due 2017
  
345,000
   
388,988
   
388,988
   
-
   
-
 
Convertible Senior Notes due 2020
  
500,000
   
685,625
   
685,625
   
-
   
-
 
Convertible Junior Subordinated Debentures
  
389,522
   
439,186
   
-
   
439,186
   
-
 
Total Debt
 
$
1,317,405
  
$
1,599,790
  
$
1,160,604
  
$
439,186
  
$
-