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CUSTOMERS, GEOGRAPHIC AND SEGMENTS INFORMATION (Schedule of Revenues and Long-lived Assets by Geographic Areas) (Details) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues $ 161,926 $ 161,735  
Long-lived assets 97,683   100,926
Consolidated Revenues [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Concentration risk percentage 12.00% 11.00%  
The number of customers accounting for revenues concentration risk 1 1  
Israel
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Long-lived assets 72,266   73,760
United States
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues 54,823 82,409  
Long-lived assets 11,043   12,490
Latin America [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues 54,719 42,014  
Long-lived assets 4,702   4,867
Asia and Asia Pacific [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues 37,468 21,951  
Africa [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues 4,857 5,735  
Europe [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues 10,059 9,626  
Long-lived assets 9,072   9,197
Other [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Long-lived assets $ 600   $ 612