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CUSTOMERS, GEOGRAPHIC AND SEGMENTS INFORMATION (Schedule of Financial Data Relating to Reportable Segments) (Details) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Segment Reporting Information [Line Items]      
Revenues $ 161,926 $ 161,735  
Cost of Revenues 110,208 103,255  
Gross profit 51,718 58,480  
R&D expenses:      
Expenses incurred 16,575 17,726  
Less - grants 1,684 1,735  
Research and development costs, net 14,891 15,991  
Selling and marketing 20,751 23,192  
General and administrative 16,274 18,107  
Costs related to acquisition transactions    256  
Operating income (loss) (198) 934  
Financial expenses, net (2,015) (737)  
Other Income    1,826  
Income (loss) before taxes (2,213) 2,023  
Taxes on income (tax benefit) (2) 644  
Net income (loss) (2,211) 1,379 (5,850)
Commercial [Member]
      
Segment Reporting Information [Line Items]      
Revenues 68,585 53,129  
Cost of Revenues 42,459 28,752  
Gross profit 26,126 24,377  
R&D expenses:      
Expenses incurred 10,031 9,562  
Less - grants 1,194 1,385  
Research and development costs, net 8,837 8,177  
Selling and marketing 11,643 11,435  
General and administrative 5,455 5,663  
Costs related to acquisition transactions   39  
Operating income (loss) 191 (937)  
Defense [Member]
      
Segment Reporting Information [Line Items]      
Revenues 28,351 35,208  
Cost of Revenues 20,971 22,952  
Gross profit 7,380 12,256  
R&D expenses:      
Expenses incurred 6,544 8,164  
Less - grants 490 350  
Research and development costs, net 6,054 7,814  
Selling and marketing 4,612 5,082  
General and administrative 1,900 3,476  
Costs related to acquisition transactions       
Operating income (loss) (5,186) (4,116)  
Services [Member]
      
Segment Reporting Information [Line Items]      
Revenues 64,990 73,398  
Cost of Revenues 46,778 51,551  
Gross profit 18,212 21,847  
R&D expenses:      
Expenses incurred        
Less - grants        
Research and development costs, net        
Selling and marketing 4,496 6,675  
General and administrative 8,919 8,968  
Costs related to acquisition transactions   217  
Operating income (loss) $ 4,797 $ 5,987