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Segment Reporting (Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Net Sales: |  |  |  |
Total net sales |  | $ 225,930 | $ 204,311 |
Long-term Assets: |  |  |  |
Total long-term assets |  | 261,509 |  | $ 255,668
North America [Member] |  |  |  |
Net Sales: |  |  |  |
Total net sales |  | 124,429 | 123,386 |
Long-term Assets: |  |  |  |
Total long-term assets |  | 93,615 |  | 89,997
South America [Member] |  |  |  |
Net Sales: |  |  |  |
Total net sales |  | 20,545 | 21,633 |
Long-term Assets: |  |  |  |
Total long-term assets |  | 57,430 |  | 58,989
Europe and Other [Member] |  |  |  |
Net Sales: |  |  |  |
Total net sales | [1] | 80,956 | $ 59,292 |
Long-term Assets: |  |  |  |
Total long-term assets |  | $ 110,464 |  | $ 106,682
[1] | The amount for 2017 includes two months of net sales from the acquisition date of January 31, 2017 related to Orlaco which is disclosed in Note 4

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