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INVENTORY (Tables)
 12 Months Ended
Dec. 31, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory, Net
Inventory is composed of the following:
 
   
December 31,
  
   
2017
    
2016
  
             
Raw materials and components
  
$
9,428
    
$
10,715
  
Work in progress
    
21,875
      
21,618
  
Spare parts
    
6,584
      
5,743
  
Finished goods
    
743
      
1,193
  
                 
Total inventory (*)
  
$
38,630
    
$
39,269
  
 
(*) The total amount of Rotables included in the company inventory for the years ended December 31, 2017 and 2016 were $8,615 and $8,345, respectively.