Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.

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Minimum amount to be expended to satisfy the terms of arrangements in which the entity has agreed to expend funds to procure goods or services, excluding long-term purchase commitments or unconditional purchase obligations.

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Commitments and Contingencies Narrative (Details) (USD $)	3 Months Ended		9 Months Ended			9 Months Ended		1 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014 Drilling Rig Leasing Contracts [Member]	Oct. 29, 2014 Subsequent Event [Member]	Oct. 27, 2014 Subsequent Event [Member] Drilling Rig Leasing Contracts [Member]	Sep. 30, 2014 Gooseneck Prospect Acquisition [Member]	Oct. 15, 2014 Gooseneck Prospect Acquisition [Member] Subsequent Event [Member]
Long-term Purchase Commitment [Line Items]
Potential Deficiency Payment									$ 24,400,000	$ 42,600,000
Commitments and Contingencies
Long-term Purchase Commitment, Amount						110,500,000		24,500,000
Purchase Commitment, Remaining Minimum Amount Committed						72,300,000
Liabilities Subject to Compromise, Early Contract Termination Fees	42,500,000		42,500,000				14,400,000
Gain (Loss) Related to Litigation Settlement	$ 1,579,000	$ 11,320,000	$ 31,509,000	$ 50,765,000