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Acquisitions (Details) (USD $)
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0 Months Ended | 1 Months Ended | 12 Months Ended | 0 Months Ended | 23 Months Ended | |||||
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Dec. 24, 2012
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Feb. 28, 2011
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 21, 2012
Utica Shale [Member]
acre
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Dec. 18, 2012
Utica Shale [Member]
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Dec. 19, 2012
Utica Shale [Member]
acre
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Dec. 31, 2012
Utica Shale [Member]
acre
wells
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Dec. 17, 2012
Utica Shale [Member]
acre
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| Business Acquisition [Line Items] | ||||||||||
| Period allowed for refusal | 6 months | |||||||||
| Affiliates participation ratio | 50.00% | |||||||||
| Gas and oil areage, undeveloped, net | 37,000 | 7,000 | 106,000 | 30,000 | ||||||
| Cash price of ownership interest | $ 70,000,000 | $ 302,000,000 | $ 372,000,000 | $ 619,600,000 | ||||||
| Gas and oil areage, undeveloped, gross (acres) | 137,000 | |||||||||
| Amount put in escrow | 53,900,000 | |||||||||
| Number Of Wells Owned | 14 | |||||||||
| 发行普通股所得，扣除发行成本和行使股票期权所得 | $ 427,900,000 | $ 427,091,000 | $ 307,154,000 | $ 21,879,000 | ||||||
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- Definition
Affiliates participation in acquisition ratio No definition available.
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- Definition
Number Of Wells Owned No definition available.
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- Definition
Right of Refusal, Period Allowed No definition available.
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- Details
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- Definition
借款人向贷款人提供的资金的指定，以保证借款人将来支付与抵押财产有关的房地产税和保险义务. 托管存款可用于各种其他目的，如保证金和或有付款. 这一要素不包括替代准备金，这体育平台是美国公认会计准则分类中单独提供的托管. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
租赁区，在该租赁区拥有开采权益，且在该租赁区未钻探或未完成的油井达到可生产商业数量石油和天然气的程度，无论该租赁区体育平台是否含有已探明储量. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
基于开采权益或其他经济安排而拥有的租赁区域的部分权益，该区域的油井尚未钻探或完井，无论该区域体育平台是否包含已探明储量，都将允许生产商业数量的石油和天然气. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
现金流出用于购买长期使用的实物资产，用于正常的石油和天然气业务，以及购买石油和天然气资产的矿产权益，而不打算转售. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
向该实体追加出资的现金流入. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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