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Miscellaneous Income, Net (Tables) | 12 Months Ended
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Dec. 31, 2017
Other Income and Expenses [Abstract] |
Schedule of miscellaneous income, net |
| Years ended December 31,
| 2017 |  | 2016 |  | 2015
Gains on sales of operating property and equipment | $ | 26,093 |  |  | 2,475 |  |  | 3,045 |
Insurance proceeds/recoveries | 1,734 |  |  | 966 |  |  | — |
Contract settlement | 1,600 |  |  | — |  |  | 55 |
Foreign currency transaction gains | 657 |  |  | 1,236 |  |  | 1,945 |
Rabbi trust investment income | 10,522 |  |  | 2,763 |  |  | 632 |
Other, net | 3,639 |  |  | 5,628 |  |  | 4,479 |
Total | $ | 44,245 |  |  | 13,068 |  |  | 10,156 |

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- Definition Tabular disclosure of the detailed components of other nonoperating income. May include methodology, assumptions and amounts for: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), and (d) miscellaneous other income items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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