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Fair Value Of Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2011
Schedule of Investments [Abstract]  
Fair Value, by Balance Sheet Grouping
The following table presents the supplemental fair value information about long-term debt at December 31, 2011 and 2010 (amounts in thousands):
 
December 31, 2011
 
December 31, 2010
 
Carrying
Amount
 
Fair
Value
 
Carrying
Amount
 
Fair
Value
Total debt
$
419,600

 
$
443,309

 
$
280,938

 
$
308,630