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FINANCIAL INSTRUMENTS (Tables)
12 Months Ended
Dec. 31, 2011
FINANCIAL INSTRUMENTS [Abstract]  
Fair value of financial instruments
Carrying values and fair values of the Company's debt at December 31, 2011, all of which was fixed-rate, were as follows (amounts in thousands):


   
Carrying value
  
Fair value
 
        
5% and 7.875% Senior Notes
 $895,905  $1,008,514 
Government-guaranteed Title XI Notes
  238,453   257,185 
   $1,134,358  $1,265,699