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Asset Retirement Obligations (Details) (USD $)
In Thousands, unless otherwise specified |
9 Months Ended |
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Sep. 30, 2014
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| Asset Retirement Obligations | |
| Asset retirement obligations - beginning of period | $ 11,859 |
| Obligations incurred | 1,495 |
| Accretion expense | 931 |
| Asset retirement obligations - end of period | $ 14,285 |
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- Definition
Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of asset retirement obligations incurred during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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