Acquisitions and Divestiture - Additional Information (Detail) (USD $)	3 Months Ended			12 Months Ended					12 Months Ended						12 Months Ended
	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2009 Year	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009	Sep. 30, 2011 RTS Life Science Limited	Jun. 30, 2011 RTS Life Science Limited	Sep. 30, 2011 RTS Life Science Limited Completed technology Year	Sep. 30, 2011 RTS Life Science Limited Customer relationships Year	Sep. 30, 2011 RTS Life Science Limited Trademarks and trade names Year	Sep. 30, 2011 Nexus Biosystems Inc.	Sep. 30, 2010 Nexus Biosystems Inc.	Jul. 25, 2011 Nexus Biosystems Inc.	Sep. 30, 2011 Nexus Biosystems Inc. Completed technology Year	Sep. 30, 2011 Nexus Biosystems Inc. Customer relationships Year	Sep. 30, 2011 Nexus Biosystems Inc. Trademarks and trade names Year
Business Acquisition [Line Items]
Total purchase price, net of cash acquired								$ 3,381,000						$ 84,928,000
Discount rate, minimum																17.00%
Discount rate, maximum																18.00%
Estimated remaining useful life, minimum			3						5							6
Estimated remaining useful life, maximum			8						7							13
Royalty rate															6.00%
Cash flow discount rate															17.00%
Finite-lived intangible assets, useful life										7	3				6		2
Transaction costs related to acquisition							188,000					719,000
Revenues				688,105,000	592,972,000	218,706,000						4,900,000
Net income (loss)				128,352,000	58,982,000	(227,858,000)						(3,200,000)
Net losses, charges to expense the step-up of acquired inventories												700,000
Net losses, charges for excess and obsolete inventory												600,000
Gain from bargain purchase													12,000,000
Proceeds from the sale of the contract manufacturing business		78,249,000		78,249,000
Considerations received from asset sale		1,300,000
Additional estimated proceeds from sale of business	2,500,000
Transaction expenses		2,300,000
Sale of contract manufacturing business		45,009,000		45,009,000
Gain recognized on sale of assets, income tax		$ 2,400,000