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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 | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015
Net Sales: |  |  |  |  |
Total net sales | $ 173,846 | $ 162,057 | $ 523,365 | $ 490,171 |
Long-term Assets: |  |  |  |  |
Total long-term assets | 143,879 |  | 143,879 |  | $ 132,343
Continuing Operations [Member] |  |  |  |  |
Net Sales: |  |  |  |  |
Total net sales | 173,846 | 162,057 | 523,365 | 490,171 |
Long-term Assets: |  |  |  |  |
Total long-term assets | 143,879 |  | 143,879 |  | 132,343
Continuing Operations [Member] | North America [Member] |  |  |  |  |
Net Sales: |  |  |  |  |
Total net sales | 108,605 | 96,676 | 321,973 | 281,108 |
Long-term Assets: |  |  |  |  |
Total long-term assets | 63,934 |  | 63,934 |  | 60,099
Continuing Operations [Member] | South America [Member] |  |  |  |  |
Net Sales: |  |  |  |  |
Total net sales | 22,342 | 24,339 | 60,207 | 73,857 |
Long-term Assets: |  |  |  |  |
Total long-term assets | 63,925 |  | 63,925 |  | 56,943
Continuing Operations [Member] | Europe and Other [Member] |  |  |  |  |
Net Sales: |  |  |  |  |
Total net sales | 42,899 | $ 41,042 | 141,185 | $ 135,206 |
Long-term Assets: |  |  |  |  |
Total long-term assets | $ 16,020 |  | $ 16,020 |  | $ 15,301

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