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Segment Information (Schedule Of Income (Loss) From Operations By Geographic Area) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Income (loss) from operations | $ (9,071) | $ (16,759)
Reportable Geographical Components [Member] |  |
Income (loss) from operations | (8,576) | (16,111)
Intercompany Sales [Member] |  |
Income (loss) from operations | (495) | (648)
Americas [Member] | Operating Segments [Member] |  |
Income (loss) from operations | (13,450) | (14,186)
Germany [Member] | Operating Segments [Member] |  |
Income (loss) from operations | 2,057 | 1,011
Other EMEA [Member] | Operating Segments [Member] |  |
Income (loss) from operations | (1,524) | (8,118)
Asia Pacific [Member] | Operating Segments [Member] |  |
Income (loss) from operations | $ 4,341 | $ 5,182

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