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Business Segment and Foreign Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Schedule of Revenues from Geographical Segments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 162,110 | $ 160,467 | $ 147,551 | $ 132,705 | $ 138,389 | $ 147,780 | $ 146,315 | $ 129,845 | $ 602,833 | $ 562,329 | $ 529,354
United States [Member] |  |  |  |  |  |  |  |  |  |  |
Schedule of Revenues from Geographical Segments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 287,678 | 201,579 | 195,308
Asia (excluding PRC) [Member] |  |  |  |  |  |  |  |  |  |  |
Schedule of Revenues from Geographical Segments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 109,960 | 129,614 | 107,886
People's Republic of China [Member] |  |  |  |  |  |  |  |  |  |  |
Schedule of Revenues from Geographical Segments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 74,475 | 98,057 | 89,918
Europe [Member] |  |  |  |  |  |  |  |  |  |  |
Schedule of Revenues from Geographical Segments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 65,579 | 70,663 | 72,852
Latin America [Member] |  |  |  |  |  |  |  |  |  |  |
Schedule of Revenues from Geographical Segments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 38,985 | 38,912 | 35,179
All Other Countries [Member] |  |  |  |  |  |  |  |  |  |  |
Schedule of Revenues from Geographical Segments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 26,156 | $ 23,504 | $ 28,211

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