INVENTORIES (Details) - Summary of Inventories Stated at Lower Cost (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Sep. 30, 2014
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 79,885 $ 75,560
Work in process 78,573 67,866
Finished goods 161,839 146,709
Total $ 320,297 $ 290,135