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Investment in Subsidiaries - Additional Information (Detail) (USD $)	12 Months Ended								12 Months Ended
	Sep. 30, 2013	Sep. 30, 2011	Sep. 30, 2010	Nov. 26, 2008	Sep. 30, 2013 Calando Pharmaceuticals Inc	Jun. 23, 2009 Calando Pharmaceuticals Inc	Nov. 26, 2008 Calando Pharmaceuticals Inc	Apr. 17, 2008 Calando Pharmaceuticals Inc	Sep. 30, 2011 Ablaris Therapeutics	Sep. 30, 2013 Ablaris Therapeutics	Sep. 30, 2013 Leonardo Biosystems, Inc.
Schedule Of Investments [Line Items]
Ownership percentage in subsidiary	100.00%
Aggregate investment in subsidiary through equity and debt								$ 23,200,000
Unsecured Convertible Promissory Note Agreements				2,500,000			2,500,000
Investment in Notes offering				200,000			200,000
Additional investment in Notes offering							600,000
Principal amount of note which not converted into shares						500,000
Conversion of Notes and accrued interest into share						2,950
Amount owed by subsidiary					4,300,000						1,100,000
Stated percentage of notes and advances					8.00%
Percentage of outstanding shares					79.00%					64.00%	3.00%
Percentage of investment ownership					76.00%					64.00%
Investment in preferred stock									1,300,000
Issuance of preferred stock in subsidiary		1,618,509	300,000						2,900,000
Investment in preferred stock by outsider									$ 1,600,000

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Investment in preferred stock.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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