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Segment Information, Operations By Geographic Area And Customer Concentration (Schedule Of Long-Lived Asset By Geographic Areas) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets $ 26,397 $ 19,025
United States [Member]
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets 12,487 9,898
Americas Excluding United States [Member]
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets 1,534 36
EMEA [Member]
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets 1,438 1,173
China [Member]
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets 9,566 6,763
APAC Excluding China [Member]
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets $ 1,372 $ 1,155