Acquisitions - Additional Information (Detail) (USD $)	3 Months Ended		1 Months Ended	3 Months Ended				3 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Nov. 17, 2011 Roche [Member]	Dec. 31, 2012 Roche [Member]	Oct. 21, 2011 Roche [Member]	Dec. 31, 2012 Roche [Member] Minimum [Member]	Dec. 31, 2012 Roche [Member] Maximum [Member]	Dec. 31, 2012 Alvos acquisition [Member]
Business Acquisition [Line Items]
Issue of promissory note to Roche				$ 50,000	$ 50,000
Issue of Common Stock				901,702				315,457
Reverse stock split ratio	Company effected a 1 for 10 reverse stock split		1-for-10
Issuance of additional shares of Common Stock				239,894
Applicable out-license term				90 days
Percentage of royalty liability				3.00%
Obligation to pay royalties	Later of (i) the expiration of the last to expire patent right related to such product candidate that was transferred in the Transaction and (ii) ten years after the first commercial sale of such product candidate.
Cash payments to Roche						2,500,000
Cash payments to Roche							6,000,000
Net present value of contingent consideration	84,935
Gain on purchase				1,576,106
Issue of additional shares of Common Stock, Value								23,500,000
Contingent consideration	$ (173,621)	$ (173,621)		$ 84,935				$ 88,686