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Inventories (Schedule of Inventory, Current by major category) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Inventory Disclosure [Abstract]
Purchased components	$ 17,059	$ 15,826
Work-in-process	28,921	12,323
Finished goods	20,984	28,647
Inventories	$ 66,964	$ 56,796

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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