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Asset Retirement Obligation (Tables) | 12 Months Ended
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Dec. 31, 2014
Schedule of Change in Asset Retirement Obligation |
| (In thousands) | Years Ended December 31,
|  | 2014 |  | 2013
Beginning balance | $ | 59,380 |  | $ | 56,849
| Adjustment due to changes in estimates |  | (5,391) |  |  | 806
| Accretion of liability |  | 7,858 |  |  | 5,106
| Liabilities settled |  | (5,802) |  |  | (3,323)
| Foreign Currency |  | (1,834) |  |  | (58)
Ending balance | $ | 54,211 |  | $ | 59,380

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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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