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财产及设备 (Narrative) (Details) (USD $)
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12个月结束 | 23个月结束 | 12个月结束 | 1月结束 | 12个月结束 | ||||||||||||
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12月. 31, 2012
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12月. 31, 2011
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12月. 31, 2010
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12月. 31, 2012
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12月. 31, 2012
菱形斑纹(成员)
顾问
member_of_board_of_directors
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10月. 23, 2012
菱形斑纹(成员)
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10月. 17, 2012
菱形斑纹(成员)
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10月. 11, 2012
菱形斑纹(成员)
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2012年5月7日
菱形斑纹(成员)
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1月. 31, 2013
菱形斑纹(成员)
Subsequent Event [Member]
Accounts Receivable - Related Party [Member]
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12月. 31, 2012
最低(成员)
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12月. 31, 2012
最大(成员)
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12月. 31, 2012
Colorado Properties [Member]
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12月. 31, 2012
Bakken Properties [Member]
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12月. 31, 2012
Southern Louisiana Properties [Member]
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12月. 31, 2012
Ohio Properties [Member]
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12月. 31, 2012
Other Properties [Member]
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| Property, Plant and Equipment [Line Items] | |||||||||||||||||
| 发生的一般费用和行政费用的累计资本化，并资本化到全部成本池 | $ 32,562,000 | $ 23,494,000 | $ 32,562,000 | ||||||||||||||
| Capitalized general and administrative costs | 9,068,000 | 5,368,000 | 4,117,000 | ||||||||||||||
| 不包括摊销的石油和天然气资产的资本化成本 | 626,295,000 | 138,623,000 | 626,295,000 | 5,998,000 | 295,000 | 774,000 | 619,182,000 | 46,000 | |||||||||
| Loss on disposal of Belize properties, net of tax | 3,465,000 | 0 | 0 | ||||||||||||||
| Expected number of years amortization will commence | 3年 | 5年 | |||||||||||||||
| 投资(股票) | 7,914,036 | ||||||||||||||||
| Promissory note receivable | 63,600,000 | ||||||||||||||||
| Payment received from Diamondback | (2,404,000) | 13,067,000 | 5,460,000 | 18,600,000 | |||||||||||||
| Gain on sale of oil and gas property | 7,300,000 | 0 | 0 | ||||||||||||||
| Oil and Gas property, decrease related to contribution | $ 213,000,000 | ||||||||||||||||
| Ownership requirement to meet agreement | 10.00% | ||||||||||||||||
| Number of directors allowed to serve on Board | 1 | ||||||||||||||||
| Number of 顾问s allowed to serve on Board | 1 | ||||||||||||||||
| 所有者权益 | 21.40% | 22.50% | 35.00% | ||||||||||||||