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Acquisitions - Additional Information (Detail) (USD $)
 1 Months Ended 12 Months Ended
Nov. 17, 2011
Sep. 30, 2012
Oct. 21, 2011
Business Acquisition [Line Items]      
Reverse stock split ratio   Company effected a 1 for 10 reverse stock split  
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.  
Contingent consideration   $ 173,621  
Roche [Member]
      
Business Acquisition [Line Items]      
Issue of promissory note to Roche   50,000 50,000
Issue of common stock   901,702  
Reverse stock split ratio 1-for-10    
Issuance of additional shares of Common Stock   386,456  
Applicable out license term   90 days  
Percentage of royalty liability   3.00%  
Gain on purchase   1,576,106  
Contingent consideration   84,935  
Alvos acquisition [Member]
      
Business Acquisition [Line Items]      
Issue of common stock   315,467  
Issue of additional shares of Common Stock, Value   23,500,000  
Contingent consideration   $ 88,686