Acquisitions - Summary of Purchase Consideration (Detail) - USD ($)		12 Months Ended
	Mar. 03, 2015	Sep. 30, 2015
Asset Acquisition [Line Items]
Cash Paid		$ 10,000,000
Novartis
Asset Acquisition [Line Items]
Cash Paid	$ 10,000,000	10,000,000
Value of Shares Issued	25,000,000	$ 25,000,000
Total purchase consideration	$ 35,000,000