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Equity Method Investment (Details) (USD $) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 30, 2012 mi | Dec. 31, 2013 | Dec. 31, 2012
Equity Method Investment |  |  |
Length of pipeline to be constructed (in miles) | 120 |  |
Entity's equity interest in construction agreement (as a percent) | 25.00% |  |
Contribution cap | $ 250,000,000 |  |
Expected contribution in future years |  | 143,000,000 |
Number of year's investment expected for contribution |  | 3 years |
Contributions |  | 18,900,000 | 6,900,000
Net book value |  | $ 26,892,000 | $ 6,915,000

X
- Definition Represents the length of pipeline to be constructed under the development and construction agreement. + References No definition available. + Details
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- Definition Represents the contribution cap of investment. + References No definition available. + Details
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Balance Type: | debit
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X
- Definition Represents the contributions to fund the cost associated with the project for the period. + References No definition available. + Details
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- Definition Represents the amount of expected contribution to be made by the entity for fund cost associated with the jointly owned pipeline in future years. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition The proportionate share of interest (percent) in a jointly owned pipeline. + References No definition available. + Details
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- Definition Represents the period for which the investment is expected for contribution. + References No definition available. + Details
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33749-111570 + Details
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