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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 |