Commitments And Contingencies (Terminated Acquisition Of Marcellus Assets) (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended	0 Months Ended
Mar. 31, 2014	Apr. 16, 2014
Loss Contingencies [Line Items]
Litigation settlement expense	$ 19,034,000us-gaap_LitigationSettlementExpense
SM Energy Litigation [Member]
Loss Contingencies [Line Items]
Amount of deposit forfeited		6,000,000
Settlement amount		5,000,000
Note issuance amount		$ 4,500,000
Number of common stock shares warrants can be converted into		2.1
Warrants exercise price		$ 5.29

Exercise price per share or per unit of warrants or rights outstanding.

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- Definition

Deposit Amount Forfeited

+ References

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(2))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Subparagraph 2

-Article 4

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

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Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

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Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

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