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Asset Retirement Obligations (Tables) | 12 Months Ended
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Dec. 31, 2015
Asset Retirement Obligation [Abstract] |
Reconciliation of the company's asset retirement obligation | A reconciliation of the Company's liability, which is included in other accrued liabilities and other liabilities on the Consolidated Balance Sheets, for the years ended December 31 was as follows:
| 2015 |  | 2014 |
| (In thousands)
Balance at beginning of year | $ | 27,211 |  | $ | 27,327 |
Liabilities incurred | 2,751 |  | 1,697 |
Liabilities settled | (1,708 | ) | (3,231 | )
Accretion expense | 1,163 |  | 1,112 |
Revisions in estimates | 211,836 |  | (73 | )
Other | 971 |  | 379 |
Balance at end of year | $ | 242,224 |  | $ | 27,211 |

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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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