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Segment Information (Tables) | 12 Months Ended
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Dec. 31, 2017
Segment Reporting [Abstract] |
Disclosure Of Segment Financial Information | The following table summarizes our segment information (in thousands):
| Years Ended December 31,
| 2017 |  | 2016 |  | 2015
Revenues |  |  |  |  |
Truckload Transportation Services | $ | 1,635,244 |  |  | $ | 1,533,981 |  |  | $ | 1,644,874 |
Werner Logistics | 417,639 |  |  | 417,172 |  |  | 393,174 |
Other | 62,745 |  |  | 57,062 |  |  | 54,512 |
Corporate | 1,938 |  |  | 1,749 |  |  | 2,297 |
Subtotal | 2,117,566 |  |  | 2,009,964 |  |  | 2,094,857 |
Inter-segment eliminations | (829 | ) |  | (973 | ) |  | (1,328 | )
Total | $ | 2,116,737 |  |  | $ | 2,008,991 |  |  | $ | 2,093,529 |
Operating Income |  |  |  |  |
Truckload Transportation Services | $ | 138,059 |  |  | $ | 107,713 |  |  | $ | 189,850 |
Werner Logistics | 8,683 |  |  | 20,734 |  |  | 16,898 |
Other | 35 |  |  | (6,177 | ) |  | (7,513 | )
Corporate | (2,957 | ) |  | 3,800 |  |  | 1,221 |
Total | $ | 143,820 |  |  | $ | 126,070 |  |  | $ | 200,456 |
Schedule Of Revenue And Long-Lived Assets, By Geographical Areas | Information about the geographic areas in which we conduct business is summarized below (in thousands) as of and for the years ended December 31, 2017, 2016 and 2015. Operating revenues for foreign countries include revenues for (i) shipments with an origin or destination in that country and (ii) other services provided in that country. If both the origin and destination are in a foreign country, the revenues are attributed to the country of origin.
| 2017 |  | 2016 |  | 2015
Revenues |  |  |  |  |
United States | $ | 1,837,525 |  |  | $ | 1,760,214 |  |  | $ | 1,821,026 |
Foreign countries |  |  |  |  |
Mexico | 210,228 |  |  | 183,058 |  |  | 191,453 |
Other | 68,984 |  |  | 65,719 |  |  | 81,050 |
Total foreign countries | 279,212 |  |  | 248,777 |  |  | 272,503 |
Total | $ | 2,116,737 |  |  | $ | 2,008,991 |  |  | $ | 2,093,529 |
Long-lived Assets
United States | $ | 1,321,206 |  |  | $ | 1,341,703 |  |  | $ | 1,134,433 |
Foreign countries |  |  |  |  |
Mexico | 25,309 |  |  | 20,614 |  |  | 19,879 |
Other | 348 |  |  | 321 |  |  | 158 |
Total foreign countries | 25,657 |  |  | 20,935 |  |  | 20,037 |
Total | $ | 1,346,863 |  |  | $ | 1,362,638 |  |  | $ | 1,154,470 |

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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + 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 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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