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Fair Value Fair Value (Tables)
 9 Months Ended
Sep. 30, 2016
Fair Value Disclosures [Abstract]  
Fair Value Measurements, Nonrecurring
The fair value of our senior notes is based on Level 1 inputs and was as follows at September 30, 2016, and December 31, 2015, (in thousands):
 
 
September 30, 2016
 
December 31, 2015
 
 
Carrying Value
 
Fair Value
 
Difference
 
Carrying Value
 
Fair Value
 
Difference
6.625% senior notes
 
$
292,740

 
$
282,494

 
$
(10,246
)
 
$
292,740

 
$
248,097

 
$
(44,643
)
4.75% senior notes
 
250,000

 
211,250

 
(38,750
)
 
250,000

 
183,125

 
(66,875
)
Total
 
$
542,740

 
$
493,744

 
$
(48,996
)
 
$
542,740

 
$
431,222

 
$
(111,518
)