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INVENTORIES (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw material $ 68,894 $ 83,569
Work-in-process 42,243 48,369
Finished goods 183,400 201,418
Inventory, Gross $ 294,537 $ 333,356