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SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2012
SIGNIFICANT ACCOUNTING POLICIES [Abstract]  
Schedule of Annual Rates of Depreciation

Annual rates of depreciation are as follows:

   
%
     
Demonstration and rental equipment
  
33
Research and development equipment
  
25 - 33
Manufacturing equipment
  
15 - 33
Office furniture and equipment
  
7 - 33
Leasehold improvements
  
(*)

 
*)
At the shorter of the lease period or useful life of the leasehold improvement.

Assumptions Used in Estimation of Fair Value of Stock-based Compensation Awards

The fair value for options granted in 2012, 2011 and 2010 is estimated at the date of grant with the following weighted average assumptions:
   
2012
  
2011
  
2010
             
Dividend yield
  
0%
  
0%
  
0%
Expected volatility
  
80-100%
  
76-132%
  
105-121%
Risk-free interest
  
0.3-0.4%
  
0.3-2.1%
  
0.3 - 2.8%
Expected life (in years)
  
1.5-5.5
  
1.5-5.5
  
1.5-5.5

Schedule of Changes in the Liability for Product Warranty
Balance at January 1, 2010
     225  
         
Provision for warranties issued during the year
     221  
Reduction for payments and costs to satisfy claims
     (217 )
         
Balance at December 31, 2010
     229  
         
Provision for warranties issued during the year
     316  
Reduction for payments and costs to satisfy claims
     (297 )
         
Balance at December 31, 2011
     248  
         
Provision for warranties issued during the year
     130  
Reduction for payments and costs to satisfy claims
     (123 )
         
Balance at December 31, 2012
     255