Segment Information (Schedule Of Percentages Of Net Revenue By Geographic Regions) (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue percentage	11.00%	4.00%	11.00%
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue percentage	35.00%	31.00%	26.00%
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue percentage	54.00%	65.00%	63.00%