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INVENTORIES (Tables)
12 Months Ended
Dec. 31, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block] Inventories at December 31, 2017 and 2016, consisted of the following (amounts in thousands):
 
2017
 
2016
Raw material
$
83,541

 
$
75,806

Work-in-process
40,525

 
32,394

Finished goods
215,770

 
164,036

 
339,836

 
272,236