Restatement of Previously Issued Financial Statements - Condensed Consolidated Statement of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013		Sep. 30, 2014	Sep. 30, 2013
Statement of Cash Flows [Abstract]
Net (loss)	$ 197,499	$ (65,256)	[1]	$ 37,841	$ (587,858)	[1]
Changes in operating assets and liabilities				(157,615)	31,150
As Reported
Statement of Cash Flows [Abstract]
Net (loss)		(57,002)			(563,576)
Changes in operating assets and liabilities					$ 6,868

[1] Guarantor and Consolidated direct operating expenses have been restated to reflect accrual of the CO2 delivery shortfall penalty. See Note 2.