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Segment Information (Schedule Of Income (Loss) From Operations By Geographic Area) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Segment Reporting Information [Line Items] |  |
Loss from operations | $ (16,759) | $ (17,524)
Reportable Geographical Components [Member] |  |
Segment Reporting Information [Line Items] |  |
Loss from operations | (16,111) | (17,017)
Intercompany Sales [Member] |  |
Segment Reporting Information [Line Items] |  |
Loss from operations | (648) | (507)
Americas [Member] | Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Loss from operations | (14,186) | (23,106)
Germany [Member] | Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Loss from operations | 1,011 | 1,840
Other EMEA [Member] | Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Loss from operations | (8,118) | (1,335)
Asia Pacific [Member] | Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Loss from operations | $ 5,182 | $ 5,584

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