Quarterly report pursuant to Section 13 or 15(d)

Debt and Debt-Related Parties Schedule of Long Term Debt (Details)

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Debt and Debt-Related Parties Schedule of Long Term Debt (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2012
Senior Notes [Member]
Dec. 31, 2010
Senior Notes [Member]
Mar. 31, 2012
Senior Notes [Member]
Long-term Debt Discount [Member]
Dec. 31, 2010
Senior Notes [Member]
Long-term Debt Discount [Member]
Mar. 31, 2012
Loans Payable [Member]
2007 Term Loan
Dec. 31, 2010
Loans Payable [Member]
2007 Term Loan
Mar. 31, 2012
Convertible Loans Payable [Member]
2008 Loans [Member]
Dec. 31, 2010
Convertible Loans Payable [Member]
2008 Loans [Member]
Mar. 31, 2012
Convertible Senior Unsecured Notes [Member]
Dec. 31, 2010
Convertible Senior Unsecured Notes [Member]
Mar. 31, 2012
Convertible Senior Unsecured Notes [Member]
Current Debt Discount [Member]
Dec. 31, 2010
Convertible Senior Unsecured Notes [Member]
Current Debt Discount [Member]
Debt Instrument [Line Items]                            
Current debt $ 204,630 $ 502,630         $ 0 $ 298,000     $ 204,630 $ 204,630    
Debt discount         (21,908) (23,082)             (5,700) (9,906)
Total current debt, net of discount 198,893 492,724                        
Long-term debt (including related parties) 2,497,793 2,497,793 2,215,500 2,215,500         282,293 282,293        
Total long-term debt, (including related parties), net of discount $ 2,475,885 $ 2,474,711