Debt and Debt-Related Parties - 2008 Loans (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended			1 Months Ended		9 Months Ended			1 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Apr. 30, 2012 Convertible Loans Payable [Member] 2008 Loans, Including Related Pary Loans [Member]	Aug. 30, 2008 Convertible Loans Payable [Member] 2008 Loans, Including Related Pary Loans [Member]	Sep. 30, 2012 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%
Debt instrument conversion price (US$ per share)												$ 5.00
Long-term debt-related parties	0		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	0	0		0				(15,098,000)
Loss on early extinguishment of debt			$ (15,095,000)	$ 0