Asset Retirement Obligation (Details Narrative) - USD ($) $ in Thousands |
3 Months Ended | ||
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Mar. 31, 2018 |
Dec. 31, 2017 |
Mar. 31, 2017 |
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| Asset retirement obligation | $ 712 | $ 701 | $ 670 |
| Accretion expense | $ 11 | ||
| Other Assets [Member] | |||
| Contributed to the Trust Fund | 450 | ||
| Contributed to the Trust Fund will be due on October 31, 2018 | $ 220 |
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- Definition Refers to contribution of fund. No definition available.
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- Definition Refers to contribution of fund. No definition available.
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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 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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- Details
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