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LONG-TERM DEBT (Details 2) (USD $)
In Thousands
Jun. 30, 2011
Dec. 31, 2010
Aggregate maturities of long term debt, including current portion    
2011 $ 17,500  
2012 100,000  
2014 114,782  
Thereafter 4,350,000  
Total gross maturities 4,582,282  
Unamortized discounts (35,493)  
Total long-term debt $ 4,546,789 $ 3,595,277