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Long-Term Debt Long-Term Debt (Tables)
 9 Months Ended
Sep. 30, 2013
Debt Disclosure [Abstract]  
Long-Term Debt
Long-term debt consists of the following (in thousands):
 
September 30,
2013
 
December 31,
2012
Unsecured notes
$
250,000

 
$
250,000

Term loan
142,500

 
—

Unamortized discounts and issuance costs of unsecured notes
(1,337
)
 
(1,681
)
 
$
391,163

 
$
248,319

Current portion, long-term debt
$
15,000

 
$
—

Long-term debt
$
376,163

 
$
248,319