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Segment Information (Schedule Of Revenue From Unaffiliated Customers By Geographic Area) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 segment | Sep. 30, 2013
Segment Reporting Information [Line Items] |  |  |  |
Number of reportable segments |  |  | 1 |
Revenue from unaffiliated customers | $ 166,944 | $ 135,717 | $ 466,214 | $ 358,583
Americas [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from unaffiliated customers | 90,992 | 74,427 | 237,919 | 199,450
Germany [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from unaffiliated customers | 19,843 | 11,039 | 63,230 | 36,236
Other EMEA [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from unaffiliated customers | 27,364 | 21,728 | 73,556 | 56,966
Asia Pacific [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from unaffiliated customers | $ 28,745 | $ 28,523 | $ 91,509 | $ 65,931

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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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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