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Equity Investments (Grizzly and Diamondback Income Statement Disclosures) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||
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Mar. 31, 2013
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Mar. 31, 2012
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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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Grizzly Oil Sands ULC [Member]
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| Schedule of Equity Method Investments [Line Items] | |||||
| Gross revenue | $ 0 | $ 0 | $ 0 | ||
| Net income (loss) | (6,050) | (6,605) | (3,234) | ||
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Diamondback Energy LLC [Member]
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| Schedule of Equity Method Investments [Line Items] | |||||
| Gross revenue | 28,909 | 16,351 | 74,962 | 49,366 | 27,253 |
| Income from operations | 8,662 | 6,737 | |||
| Income from operations | 17,307 | 15,147 | 9,181 | ||
| Net income (loss) | $ 5,396 | $ 1,477 | $ (36,521) | $ (386) | $ 8,231 |
| X | ||||||||||
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- Definition
The amount of income (loss) from continuing operations before extraordinary items reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of net income (loss) reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity. No definition available.
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- Definition
Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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