Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Inventory [Line Items]
Finished goods	$ 9,020	$ 2,966
Work-in-progress	36,032	28,851
Raw materials and supplies	14,520	12,340
Total	$ 59,572	$ 44,157

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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