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INVENTORIES (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Inventory Disclosure [Abstract]    
Raw material $ 83,541 $ 75,806
Work-in-process 40,525 32,394
Finished goods 215,770 164,036
Inventory, Net $ 339,836 $ 272,236