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OTHER PAYABLES AND ACCRUED EXPENSES (Tables)
 12 Months Ended
Dec. 31, 2017
Other Liabilities Disclosure [Abstract]  
Schedule of Other Payables and Accrued Expenses
   
December 31,
  
   
2017
    
2016
  
             
Accrued expenses and other
  
$
5,939
    
$
8,330
  
Subcontractors accrual
    
1,692
      
2,081
  
Accrued taxes
    
6,523
      
4,108
  
Contingent consideration related to the acquisition
    
1,550
      
-
  
                 
   
$
15,704
    
$
14,519