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Related Party Transactions (Details) (USD $)
 1 Months Ended 12 Months Ended 1 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Jul. 31, 2011
VGX Int'l [Member]
Mar. 24, 2010
VGX Int'l [Member]
Dec. 31, 2013
VGX Int'l [Member]
Dec. 31, 2012
VGX Int'l [Member]
Dec. 31, 2011
VGX Int'l [Member]
Dec. 31, 2013
OncoSec [Member]
Sep. 28, 2011
OncoSec [Member]
First warrant [Member]
Mar. 24, 2012
OncoSec [Member]
Second warrant [Member]
Related-Party Transactions (Textual) [Abstract]                    
Additional shares purchased in VGX Int'l     145,000              
Sale price per share     $ 0.71              
Percentage of ownership         14.70% 16.10%        
Payment received for license granted       $ 3,000,000            
Deferred revenue from affiliated entity       3,000,000            
Period over which deferred revenue from affiliated entity will be recognized in years       8 years            
Revenue from related parties         425,000 577,000 411,000      
Operating expenses related to affiliated entity         2,300,000 871,000 5,300,000      
Accounts receivable from related parties         0 36,000        
Long-term other assets 402,075 134,193     231,000          
Payment made to affiliated entity         300,000          
Payments received from affiliate               $ 3,000,000    
Common stock purchase warrant                 1,000,000 3,000,000
Term of the warrants in years                 5 years 5 years
Exercise price of a five-year warrant                 $ 1.20 $ 1.00