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ASSET RETIREMENT OBLIGATION (Tables)
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12 Months Ended | |||||||||||||||||||||
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Dec. 31, 2012
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| ASSET RETIREMENT OBLIGATION (Tables) | ||||||||||||||||||||||
| Changes in Asset Retirement Obligations |
A reconciliation of the asset retirement obligation for the years ended December 31, 2011 and 2012 is as follows:
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- Details
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- Definition
Tabular disclosure of the carrying amount of a liability for asset retirement obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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