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ACCRUED EXPENSES (Tables)
 12 Months Ended
Dec. 31, 2017
ACCRUED EXPENSES [Abstract]  
Accrued expenses
Accrued expenses consist of the following:
 
 
 
Year Ended December 31,
 
 
 
2017
  
2016
 
Sales commissions
 
$
2,461
  
$
2,066
 
Subcontracting labor
  
1,408
   
1,370
 
Salaries, bonuses and related benefits
  
16,531
   
17,587
 
Warranty accrual
  
1,769
   
2,718
 
Other
  
8,339
   
7,808
 
 
 
$
30,508
  
$
31,549
 
Schedule of warranty accrual account for the period from the acquisition date
A tabular presentation of the activity within the warranty accrual account for the years ended December 31, 2017 and 2016 is presented below:

 
 
Year Ended December 31,
 
 
 
2017
  
2016
 
Balance, beginning of year
 
$
2,718
  
$
3,659
 
Charges and costs accrued
  
268
   
761
 
Adjustments related to pre-existing warranties
        
(including changes in estimates)
  
(969
)
  
(1,063
)
Less: Repair costs incurred
  
(311
)
  
(544
)
Currency translation
  
63
   
(95
)
Balance, end of year
 
$
1,769
  
$
2,718