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Goodwill and Intangible Assets (Details) - USD ($) | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2017 | Dec. 31, 2016 | Apr. 30, 2016 | Apr. 29, 2016 | Jun. 30, 2009 | Jan. 31, 2005
Non-Amortizing: |  |  |  |  |  |
Goodwill, Gross | $ 10,513,371 | $ 10,513,371 |  |  |  |
Goodwill, Net Book Value | 10,513,371 | 10,513,371 |  |  |  |
Amortizing: |  |  |  |  |  |
Intangible assets, Gross | 24,717,873 | 24,717,873 |  |  |  |
Intangible assets, Accumulated Amortization | (17,900,018) | (17,089,479) |  |  |  |
Intangible assets, Net Book Value | 6,817,855 | 7,628,394 |  |  |  |
Total goodwill and intangible assets, Gross | 35,231,244 | 35,231,244 |  |  |  |
Total goodwill and intangible assets, Net Book Value | 17,331,226 | 18,141,765 |  |  |  |
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 | (5,651,470) | (5,618,854) |  |  |  |
Intangible assets, Net Book Value | $ 151,058 | 183,674 |  |  |  |
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 | (1,176,235) | (1,161,861) |  |  |  |
Intangible assets, Net Book Value | $ 147,526 | 161,900 |  |  |  |
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 | (7,038,569) | (6,825,028) |  |  |  |
Intangible assets, Net Book Value | $ 1,067,701 | 1,281,242 |  |  |  |
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 | (256,105) | (240,264) |  |  |  |
Intangible assets, Net Book Value | 79,209 | 95,050 |  |  |  |
Bioject [Member] |  |  |  |  |  |
Amortizing: |  |  |  |  |  |
Intangible assets, Gross | 5,100,000 | 5,100,000 |  |  |  |
Intangible assets, Accumulated Amortization | (983,889) | (562,222) |  |  |  |
Intangible assets, Net Book Value | $ 4,116,111 | 4,537,778 |  |  |  |
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 | (2,793,750) | (2,681,250) |  |  |  |
Intangible assets, Net Book Value | $ 1,256,250 | $ 1,368,750 |  |  |  |

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