ASSET RETIREMENT OBLIGATION (Tables) |
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2017 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Asset Retirement Obligation Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Asset Retirement Obligations [Table Text Block] |
A reconciliation of the asset retirement obligation for the years ended December 31, 2015, 2016 and 2017 is as follows:
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- References No definition available.
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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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