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Business Segment and Geographic Information (Operations by Geographic Area) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Segment Reporting Information [Line Items] |  |  |  |
Net sales | [1] | $ 641,443 | $ 610,911 | $ 537,482
Long-Lived Assets | [2] | 428,827 | 287,223 | 304,772
United States |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | [1] | 162,662 | 124,305 | 118,217
Long-Lived Assets | [2] | 217,595 | 70,728 | 64,744
China |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | [1] | 192,155 | 236,488 | 193,734
Long-Lived Assets | [2] | 65,994 | 49,794 | 44,805
Germany |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | [1] | 81,452 | 93,478 | 79,043
Long-Lived Assets | [2] | 110,240 | 129,702 | 154,688
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | [1] | 205,174 | 156,640 | 146,488
Long-Lived Assets | [2] | $ 34,998 | $ 36,999 | $ 40,535
[1] | Net sales are allocated to countries based on the location of the customer.
[2] | Long-lived assets are based on the location of the asset and are comprised of goodwill and other intangibles and property, plant and equipment.

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + 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=26872669&loc=d3e20235-122688 + Details
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