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INVENTORIES (Details) - Summary of Inventories Stated at Lower Cost - USD ($)
$ in Thousands
Dec. 31, 2015
Sep. 30, 2015
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 81,022 $ 91,973
Work in process 74,023 70,811
Finished goods 179,417 163,025
Total $ 334,462 $ 325,809