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Related-Party Transactions (Details Textual) (USD $)
1 Months Ended
Feb. 29, 2012
Sep. 30, 2011
Sep. 30, 2012
Dec. 31, 2011
Related-Party Transactions (Additional Textual) [Abstract]        
Accounts receivable balance from GSK     $ 291,000 $ 507,000
Convertible loan principal amount   10,000,000    
Convertible loan interest rate   5.00%    
Convertible loan maturity date   Sep. 01, 2021    
Outstanding, accrued, unpaid interest converted into common stock 1,021,490      
Feb 2012 Techne warrant [Member]
       
Related-Party Transactions (Textual) [Abstract]        
Conversion price of common stock 10.00      
Warrant contractual term 10 years      
Purchase of warrant common stock 150,000      
Warrant common stock exercise price 20.00      
Warrant common stock exercise price rate 200.00%      
Techne purchased common stock 5,000,000      
Techne purchased common stock per share 10.00