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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2016
Accounting Policies [Abstract] |
Schedule of Change in Asset Retirement Obligation | The following summarizes the changes in asset retirement obligations:
| Year-End
| 2016 |  | 2015
| (In thousands)
Beginning balance | $ | 1,758 |  |  | $ | 1,807 |
Additions | 6 |  |  | 65 |
Oil and gas working interest property dispositions | (1,610 | ) |  | (119 | )
Liabilities settled | (107 | ) |  | (139 | )
Accretion expense | 56 |  |  | 144 |
| $ | 103 |  |  | $ | 1,758 |
Schedule of Property, Plant and Equipment | We depreciate these assets using the straight-line method over their estimated useful lives as follows:
| Estimated |  | Year-End
| Useful Lives |  | 2016 |  | 2015
|  |  | (In thousands)
Buildings and building improvements | 10 to 40 years |  | $ | 2,700 |  |  | $ | 4,044 |
Property and equipment | 2 to 10 years |  | 4,957 |  |  | 12,230 |
|  |  | 7,657 |  |  | 16,274 |
Less: accumulated depreciation |  |  | (4,541 | ) |  | (5,542 | )
|  |  | $ | 3,116 |  |  | $ | 10,732 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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