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INVENTORIES (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Inventory Disclosure [Abstract]    
Inventory, Raw Materials, Net of Reserves $ 78,046 $ 85,490
Inventory, Work in Process, Net of Reserves 33,174 31,866
Inventory, Finished Goods, Net of Reserves 170,422 158,997
Inventory, Gross 281,642 276,353
Adjustment to LIFO basis (3,559) (6,562)
Inventory, Net $ 278,083 $ 269,791
Percentage of LIFO Inventory 7.00% 8.00%