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Major Customer And Geographic Information (Schedule Of Long-Lived Assets By Geographic Areas) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Revenues from External Customers and Long-Lived Assets [Line Items]      
Long-lived assets $ 1,280,680 $ 1,300,515 $ 1,008,011
Israel [Member]
     
Revenues from External Customers and Long-Lived Assets [Line Items]      
Long-lived assets 875,935 985,953 753,477
U.S. [Member]
     
Revenues from External Customers and Long-Lived Assets [Line Items]      
Long-lived assets 208,640 225,217 185,134
Other [Member]
     
Revenues from External Customers and Long-Lived Assets [Line Items]      
Long-lived assets $ 196,105 $ 89,345 $ 69,400