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Segment reporting | 12 Months Ended
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Dec. 31, 2017
Segment Reporting Information, Revenue for Reportable Segment [Abstract] |
Segment reporting | (5) Segment reporting We previously operated two reportable business segments, Industrial Materials and Engineered Solutions. During the second quarter of 2016 the Company decided to sell the businesses that comprised our Engineered Solutions segment to focus on our Industrial Materials segment. Accordingly, the Engineered Solutions business qualified as held for sale status and the related results have been excluded from continuing operations. See Note 3 "Discontinued Operations and Assets Held for Sale" for significant components of the results of our Engineered Solutions segment. Our Industrial Materials segment manufactures high quality graphite electrodes essential to the production of electric arc furnace steel and other ferrous and non-ferrous metals. Petroleum needle coke, a crystalline form of carbon derived from decant oil, is the primary raw material used in the production of graphite electrodes. We utilize substantially all the needle coke that we produce internally to manufacture our graphite electrodes and as a result more than 90% of our revenues from external customers are derived from the sale of graphite electrodes and graphite electrode by-products from our manufacturing processes. Assets are managed based on geographic location because certain continuing and discontinued operations share certain facilities. The following tables summarize information as to our continuing operations in different geographic areas.
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | 2017 |  | 2016 |  | 2015 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | (Dollars in thousands) |
Net sales:* |  |  |  |  |  |  |
U.S. |  | $ | 103,890 |  | $ | 74,526 |  | $ | 107,517 |
Americas |  | 129,103 |  | 116,944 |  | 132,917 |
Asia Pacific |  | 46,329 |  | 41,302 |  | 37,509 |
Europe, Middle East, Africa |  | 271,449 |  | 205,191 |  | 255,097 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  | $ | 550,771 |  | $ | 437,963 |  | $ | 533,040 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
* Net sales were not impacted by purchase price accounting adjustments.
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | At December 31, |
|  | 2017 |  | 2016 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  | (Dollars in thousands) |
Long-lived assets(a): |  |  |  |  |  |  |
U.S. and Canada |  | $ | 177,298 |  | $ | 191,502 |
Mexico |  |  | 147,959 |  |  | 151,288 |
Brazil |  |  | 3,547 |  |  | 6,100 |
France |  |  | 80,035 |  |  | 69,558 |
Spain |  |  | 103,819 |  |  | 87,614 |
South Africa |  |  | 20 |  |  | 2,547 |
Other countries |  |  | 163 |  |  | 246 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  | $ | 512,841 |  | $ | 508,855 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(a) Long-lived assets represent fixed assets, net of accumulated depreciation.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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- References No definition available. + Details
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