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Asset Retirement Obligations | 12 Months Ended
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Dec. 31, 2017
Asset Retirement Obligation Disclosure [Abstract] |
Asset Retirement Obligations |
9. | ASSET RETIREMENT OBLIGATIONS
The following is a reconciliation of the changes in the Company’s liabilities for asset retirement obligations for the years ended December 31, 2017 and 2016:
|  | 2017 |  |  | 2016 |
|  | Oil and Gas |  |  | Mining |  |  | Oil and Gas |  |  | Mining |
Balance, beginning of year |  | $ | 1,045 |  |  | $ | - |  |  | $ | 1,038 |  |  | $ | 204 |
Accretion |  |  | 32 |  |  |  | - |  |  |  | 33 |  |  |  | - |
Sold/Plugged |  |  | (167 | ) |  |  | - |  |  |  | (26 | ) |  |  | (204 | )
New drilled wells |  |  | 3 |  |  |  | - |  |  |  | - |  |  |  | - |
Liabilities incurred |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Balance, end of year |  | $ | 913 |  |  | $ | - |  |  | $ | 1,045 |  |  | $ | - |
As discussed further in Note 6, asset retirement obligations related to the Company’s mining segment are presented as discontinued operations in the accompanying balance sheets.

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- Definition The entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2175671 + Details
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