Segment Information (Schedule Of Income (Loss) From Operations By Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Loss from operations	$ (18,218)	$ (21,305)
Reportable Geographical Components
Loss from operations	(18,218)	(21,305)
Americas | Operating Segments
Loss from operations	(22,087)	(26,832)
EMEA | Operating Segments
Loss from operations	2,228	2,917
Asia Pacific | Operating Segments
Loss from operations	$ 1,641	$ 2,610