v3.19.2
INVENTORIES (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Raw materials $ 63,013 $ 39,380
Work in process 23,001 18,115
Finished goods 62,878 84,024
Inventories, net $ 148,892 $ 141,519