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普通股期权、认股权证及资本化变动（详情）（美元）
以千为单位，共享新葡京除外，除非另有说明 |
6 Months Ended | 0 Months Ended | 0 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2013
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Jun. 30, 2012
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Feb. 15, 2013
Utica Shale [Member]
acre
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Dec. 24, 2012
Utica Shale [Member]
acre
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Dec. 19, 2012
Utica Shale [Member]
acre
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Dec. 17, 2012
Utica Shale [Member]
acre
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Feb. 15, 2013
Common Stock [Member]
Public Offering [Member]
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Jan. 07, 2013
Common Stock [Member]
Public Offering [Member]
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Dec. 24, 2012
Common Stock [Member]
Public Offering [Member]
|
|
| 普通股期权、限制性股票、认股权证及资本化变动[分项] | |||||||||
| 公开发行普通股（股份） | 8,912,500 | 11,750,000 | |||||||
| 股票期权，承销商可获得的部分（股份） | 1,650,000 | ||||||||
| 股票期权，归属于承销商的部分（股份） | 900,000 | 750,000 | |||||||
| Share price (usd per share) | $ 38.00 | $ 38.00 | |||||||
| 普通股发行所得，扣除发行成本 | $ 359,040 | $ 325,800 | $ 460,700 | $ 325,800 | $ 460,700 | ||||
| Gas and oil acreage, undeveloped, net | 22,000 | 37,000 | 7,000 | 30,000 | |||||