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Segment And Geographic Information (Schedule Of Geographic Net Sales And Long-Lived Assets) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Geographic net sales | $ 679,856 | $ 603,550 | $ 616,904 | $ 566,501 | $ 607,507 | $ 574,341 | $ 579,342 | $ 549,225 | $ 625,719 | $ 630,191 | $ 664,038 | $ 620,925 | $ 2,466,811 | $ 2,310,415 | $ 2,540,873
Long-lived assets | 282,480 |  |  |  | 268,070 |  |  |  | 290,945 |  |  |  | 282,480 | 268,070 | 290,945
United States [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Geographic net sales |  |  |  |  |  |  |  |  |  |  |  |  | 1,659,404 | 1,615,749 | 1,848,503
Long-lived assets | 167,858 |  |  |  | 167,367 |  |  |  | 172,958 |  |  |  | 167,858 | 167,367 | 172,958
Asia [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Geographic net sales |  |  |  |  |  |  |  |  |  |  |  |  | 434,332 | 334,305 | 314,160
Long-lived assets | 77,750 |  |  |  | 67,998 |  |  |  | 77,237 |  |  |  | 77,750 | 67,998 | 77,237
Europe [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Geographic net sales |  |  |  |  |  |  |  |  |  |  |  |  | 292,490 | 252,972 | 221,911
Long-lived assets | 11,042 |  |  |  | 8,415 |  |  |  | 9,704 |  |  |  | 11,042 | 8,415 | 9,704
Other Foreign [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Geographic net sales |  |  |  |  |  |  |  |  |  |  |  |  | 80,585 | 107,389 | 156,299
Long-lived assets | $ 25,830 |  |  |  | $ 24,290 |  |  |  | $ 31,046 |  |  |  | $ 25,830 | $ 24,290 | $ 31,046

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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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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=63488584&loc=d3e20235-122688 + Details
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