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Goodwill and Intangible Assets (Details) - USD ($)
 6 Months Ended
Jun. 30, 2016
Apr. 30, 2016
Apr. 29, 2016
Dec. 31, 2015
Jun. 30, 2009
Jan. 31, 2005
Non-Amortizing:            
Goodwill, Gross $ 10,513,371     $ 10,113,371    
Goodwill, Net Book Value 10,513,371     10,113,371    
Amortizing:            
Intangible assets, Gross 24,717,873     19,617,873    
Intangible assets, Accumulated Amortization (16,268,567)     (15,712,013)    
Intangible assets, Net Book Value 8,449,306     3,905,860    
Total goodwill and intangible assets, Gross 35,231,244     29,731,244    
Total goodwill and intangible assets, Net Book Value 18,962,677     14,019,231    
Inovio AS [Member]            
Non-Amortizing:            
Goodwill, Net Book Value           $ 3,900,000
VGX [Member]            
Non-Amortizing:            
Goodwill, Net Book Value         $ 6,200,000  
Bioject [Member]            
Non-Amortizing:            
Goodwill, Net Book Value   $ 400,000 $ 400,000      
Patents [Member]            
Amortizing:            
Intangible assets, Gross 5,802,528     5,802,528    
Intangible assets, Accumulated Amortization (5,575,864)     (5,516,122)    
Intangible assets, Net Book Value $ 226,664     286,406    
Patents [Member] | Minimum [Member]            
Schedule of intangible assets by major asset class            
Useful Life 8 years          
Patents [Member] | Maximum [Member]            
Schedule of intangible assets by major asset class            
Useful Life 17 years          
Licenses [Member]            
Amortizing:            
Intangible assets, Gross $ 1,323,761     1,323,761    
Intangible assets, Accumulated Amortization (1,147,487)     (1,133,113)    
Intangible assets, Net Book Value $ 176,274     190,648    
Licenses [Member] | Minimum [Member]            
Schedule of intangible assets by major asset class            
Useful Life 8 years          
Licenses [Member] | Maximum [Member]            
Schedule of intangible assets by major asset class            
Useful Life 17 years          
CELLECTRA [Member]            
Amortizing:            
Intangible assets, Gross $ 8,106,270     8,106,270    
Intangible assets, Accumulated Amortization (6,611,487)     (6,397,947)    
Intangible assets, Net Book Value $ 1,494,783     1,708,323    
CELLECTRA [Member] | Minimum [Member]            
Schedule of intangible assets by major asset class            
Useful Life 5 years          
CELLECTRA [Member] | Maximum [Member]            
Schedule of intangible assets by major asset class            
Useful Life 11 years          
GHRH [Member]            
Schedule of intangible assets by major asset class            
Useful Life 11 years          
Amortizing:            
Intangible assets, Gross $ 335,314     335,314    
Intangible assets, Accumulated Amortization (224,423)     (208,581)    
Intangible assets, Net Book Value $ 110,891     126,733    
Bioject [Member]            
Amortizing:            
Intangible assets, Gross       0    
Intangible assets, Accumulated Amortization       0    
Intangible assets, Net Book Value       0    
Bioject [Member] | Minimum [Member]            
Schedule of intangible assets by major asset class            
Useful Life 2 years          
Bioject [Member] | Maximum [Member]            
Schedule of intangible assets by major asset class            
Useful Life 15 years          
Other [Member]            
Schedule of intangible assets by major asset class            
Useful Life 18 years          
Amortizing:            
Intangible assets, Gross $ 4,050,000     4,050,000    
Intangible assets, Accumulated Amortization (2,568,750)     (2,456,250)    
Intangible assets, Net Book Value $ 1,481,250     $ 1,593,750