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SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
USD ($)
item
shares
Dec. 31, 2014
USD ($)
item
shares
Dec. 31, 2013
USD ($)
shares
Significant Accounting Policies [Line Items]      
Short-term bank deposits average interest rate 0.00% 0.00%  
Income tax benefit realization threshold 50.00%    
Intangible assets useful lives 7 years    
Impairment of long-lived assets $ 2,367 $ 2,559
Number of reporting units | item 1    
Number of additional research and development grants approved | item   3  
Warranty expense (income) $ (139) $ (133) (1,816)
Warranty provision 2,712 2,851  
Allowance for doubtful accounts 8,404 12,229  
Trade receivables sold 14,443 13,061  
Severance expense $ 2,673 $ 1,964 $ 2,588
Outstanding options excluded from the calculations of diluted net earnings per share due to their anti-dilutive effect | shares 5,679,468 6,895,891 5,996,622
Advertising expenses $ 350 $ 235 $ 325
Short-term bank deposits $ 413  
Maximum [Member]      
Significant Accounting Policies [Line Items]      
Warranty period 3 years    
Minimum [Member]      
Significant Accounting Policies [Line Items]      
Warranty period 1 year