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Inventories - Components of the Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
Schedule Of Inventory [Line Items]
Raw materials	$ 7,514	$ 6,916
Work-in-process	8,625	9,540
Total	34,335	31,682
Illumigene Instruments [Member]
Schedule Of Inventory [Line Items]
Finished goods	1,356	2,326
Kits and Reagents [Member]
Schedule Of Inventory [Line Items]
Finished goods	$ 16,840	$ 12,900

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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