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Summary of Significant Accounting Policies (Details) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Basis of Presentation [Abstract]                      
Net loss from operations $ (658,751) $ (6,622,076) $ (4,133,179) $ (8,254,949) $ (5,476,241) $ (4,541,932) $ (2,822,159) $ (2,412,613) $ (19,668,955) $ (15,252,945) $ (17,613,796)
Working capital 7,600,000               7,600,000    
Accumulated deficit (229,760,129)       (210,091,174)       (229,760,129) (210,091,174)  
Consolidation [Abstract]                      
Interest in VGX Animal Health 88.00%               88.00%    
Non-controlling interest 9.00%       9.00%       9.00% 9.00%  
Accounts Receivable [Abstract]                      
Allowance for doubtful accounts 0       0       0 0  
Long Lived Assets [Abstract]                      
Impairment of long-lived assets held-for-use                 0    
Income Taxes [Abstract]                      
Deferred tax assets, valuation allowance $ 52,185,000       $ 44,784,000       $ 52,185,000 $ 44,784,000