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Acquisitions (Details) (USD $)
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3 Months Ended | 9 Months Ended | 0 Months Ended | 6 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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Mar. 20, 2014
Utica Shale [Member]
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Feb. 15, 2013
Utica Shale [Member]
well
acre
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Sep. 30, 2014
Utica Shale [Member]
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Mar. 20, 2014
Utica Shale [Member]
acre
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Feb. 15, 2013
Utica Shale [Member]
acre
well
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Mar. 20, 2014
Utica Shale [Member]
Proved Properties [Member]
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Mar. 20, 2014
Utica Shale [Member]
Unproved Properties [Member]
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Mar. 20, 2014
Utica Shale [Member]
Unevaluated Properties [Member]
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| Business Acquisition [Line Items] | ||||||||||||
| Gas and oil acreage, undeveloped, net | 8,000 | 22,000 | ||||||||||
| Cash price of ownership interest | $ 184,000,000 | $ 220,000,000 | ||||||||||
| Amount put in escrow | 33,600,000 | |||||||||||
| Proceeds from issuance of common stock, net of offering costs and exercise of stock options | 654,000 | 359,040,000 | 325,800,000 | |||||||||
| Existing wells excluded | 14 | |||||||||||
| Future wells excluded | 16 | |||||||||||
| Purchase price | 179,000,000 | |||||||||||
| Cash, net of purchase price adjustments | 177,444,000 | |||||||||||
| Net revenues | 170,804,000 | 69,252,000 | 403,569,000 | 194,686,000 | 4,900,000 | |||||||
| Lease operating expenses | 11,883,000 | 7,297,000 | 36,192,000 | 18,347,000 | 700,000 | |||||||
| Fair value of net identifiable assets acquired | $ 177,444,000 | $ 32,005,000 | $ 6,263,000 | $ 139,176,000 | ||||||||