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Long-Term Debt Long-Term Debt (Tables)
 12 Months Ended
Dec. 31, 2012
Debt Disclosure [Abstract]  
Long-term debt
Long-term debt consists of the following (in thousands):
 
December 31,
 
2012
 
2011
Unsecured notes
$
250,000

 
$
250,000

Unamortized issuance costs
(1,681
)
 
(2,139
)
 
$
248,319

 
$
247,861