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Summary of Significant Accounting Policies (Details) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Basis of Presentation [Abstract]                      
Net loss from operations $ (15,454,330) $ (30,877,410) $ (10,852,588) $ (8,844,120) $ (658,751) $ (6,622,076) $ (4,133,179) $ (8,254,949) $ (66,028,448) $ (19,668,955) $ (15,252,945)
Working capital 29,700,000               29,700,000    
Accumulated deficit (295,788,577)       (229,760,129)       (295,788,577) (229,760,129)  
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  
Income Taxes [Abstract]                      
Deferred tax assets, valuation allowance $ 61,061,000       $ 52,185,000       $ 61,061,000 $ 52,185,000