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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
Jul. 01, 2012
Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets $ 17,282 $ 15,884
United States [Member]
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets 10,291 9,901
Americas Excluding United States [Member]
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets 39 44
EMEA [Member]
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets 630 331
China [Member]
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets 5,340 4,909
APAC Excluding China [Member]
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets $ 982 $ 699