Quarterly report pursuant to Section 13 or 15(d)

Debt and Debt-Related Parties - 2008 Loans (Details)

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Debt and Debt-Related Parties - 2008 Loans (Details) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified
1 Months Ended 6 Months Ended 1 Months Ended 1 Months Ended
Apr. 30, 2012
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Aug. 30, 2008
Convertible Loans Payable [Member]
2008 Loans, Including Related Pary Loans [Member]
Dec. 31, 2010
Convertible Loans Payable [Member]
2008 Loans, Including Related Pary Loans [Member]
Jun. 30, 2010
Convertible Loans Payable [Member]
2008 Loans, Including Related Pary Loans [Member]
Apr. 30, 2012
Scorpion Capital Partners, LP [Member]
Convertible Loans Payable [Member]
2008 Loans, Including Related Pary Loans [Member]
Jun. 30, 2012
Scorpion Capital Partners, LP [Member]
Convertible Loans Payable [Member]
2008 Loans, Including Related Pary Loans [Member]
Debt Instrument [Line Items]                  
Principal amount of debt         $ 250,000,000        
Debt instrument interest rate         12.00%        
Debt instrument interest rate during occurrence of certain event or default (percent)         14.00%        
Common units securing the 2008 Loans         12.0        
Restricted Cash and Cash Equivalents             63,600,000    
Prepaid Interest             60,900,000    
Prepaid loan principal             2,700,000    
Percentage of lenders           96.60%      
Percentage held in loan                 3.40%
Debt instrument conversion price (US$ per share)                 $ 5.00
Long-term debt-related parties   0   9,598,000          
Aggregate repayment amount               8,400,000  
Number of shares issued in exchange for debt 1.7                
Value of cash offered for debt exchange               1,400,000  
Loss on early extinguishment of debt   $ (15,097,000) $ 0