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INVENTORIES (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Jan. 01, 2017
Inventories [Abstract]    
Raw materials and spare parts inventories $ 128,414 $ 119,155
Work in progress 60,743 56,397
Finished goods 756,581 779,324
Inventories, total $ 945,738 $ 954,876