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INVENTORIES
 3 Months Ended
Mar. 31, 2018
INVENTORIES [Abstract]  
INVENTORIES
(5)
INVENTORIES
 
The following table presents the details of inventories as of March 31, 2018 and December 31, 2017 (in thousands):

  
March 31,
2018
  
December 31,
2017
 
       
Finished goods
 
$
254,631
  
$
242,333
 
Work in process
  
117,551
   
73,396
 
  
$
372,182
  
$
315,729