Related Party Transactions	9 Months Ended
Sep. 30, 2015
Related Party Transaction, Due from (to) Related Party [Abstract]
Related Party Transactions	Related Party Transactions GeneOne Life Sciences On May 26, 2015, the Company entered into a Collaborative Development Agreement with GeneOne to co-develop a DNA vaccine for MERS (Middle East Respiratory Syndrome) through phase I clinical trials. On September 23, 2014, the Company entered into a Collaborative Development Agreement with GeneOne to co-develop an Ebola vaccine through phase I clinical trials. In July 2015, the Company amended the Agreement with an effective date of April 2015 to change control of development in return for the Company’s payment of certain development fees. On October 7, 2011, the Company entered into a Collaborative Development and License Agreement (the “Hep Agreement”) with GeneOne. Under the Hep Agreement, as originally executed, the Company and GeneOne agreed to co-develop the Company’s SynCon^® therapeutic vaccines for hepatitis B and C infections (the “Products”). Under the terms of the Hep Agreement, GeneOne will receive marketing rights for the Products in Asia, excluding Japan, and in return will fully fund IND-enabling and initial Phase I and II clinical studies with respect to the Products. The Company will receive from GeneOne payments based on the achievement of clinical milestones and royalties based on sales of the Products in the licensed territories, retaining all commercial rights to the Products in all other territories. On August 21, 2013, the Company amended the Hep Agreement to grant back to the Company hepatitis B, along with all associated rights, from the collaboration in return for certain remuneration including a percentage of license fees. On October 7, 2013, the Company further amended the Hep Agreement to in part provide exclusive patent rights to IL-28 technology for use with the Products in Asia, excluding Japan. On March 24, 2010, the Company entered into a Collaboration and License Agreement (the “GeneOne Agreement”) with GeneOne. Under the GeneOne Agreement, the Company granted GeneOne an exclusive license to Inovio’s SynCon^® universal influenza vaccine delivered with electroporation to be developed in certain countries in Asia (the “Product”). As consideration for the license granted to GeneOne, the Company received payment of $3.0 million, and will receive research support, annual license maintenance fees and royalties on net Product sales. The Company recorded the $3.0 million as deferred revenue from affiliated entity, and will recognize it as revenue over the eight year expected period of the Company’s performance obligation. In addition, contingent upon achievement of clinical and regulatory milestones, the Company will receive development payments over the term of the GeneOne Agreement. The GeneOne Agreement also provides Inovio with exclusive rights to supply devices for clinical and commercial purposes (including single use components) to GeneOne for use in the Product. The term of the GeneOne Agreement commenced upon execution and will extend on a country by country basis until the last to expire of all Royalty Periods for the territory (as such term is defined in the GeneOne Agreement) for any Product in that country, unless the GeneOne Agreement is terminated earlier in accordance with its provisions as a result of breach, by mutual agreement, or by GeneOne's right to terminate without cause upon prior written notice. For the three and nine months ended September 30, 2015, the Company recognized revenue from GeneOne of $113,000 and $338,000, respectively, which consisted of licensing and other fees. Operating expenses related to GeneOne for the three and nine months ended September 30, 2015 include $1.1 million and $6.5 million, respectively, related to biologics manufacturing. For the three and nine months ended September 30, 2014, the Company recognized revenue from GeneOne of $113,000 and $367,000, respectively, which consisted of licensing and other fees. Operating expenses related to GeneOne for the three and nine months ended September 30, 2014 include $413,000 and $4.1 million, respectively, related to biologics manufacturing. At September 30, 2015 and December 31, 2014, the Company had an accounts receivable balance of $0 and $2,000, respectively, and an accounts payable and accrued liability balance of $2.8 million and $28,000, respectively, related to GeneOne and its subsidiaries. At September 30, 2015 and December 31, 2014, $213,000 and $260,000 of prepayments made to GeneOne were classified as long-term other assets on the consolidated balance sheet, respectively. OncoSec Medical Incorporated The Company's non-executive Chairman, Dr. Avtar Dhillon, is also the non-executive Chairman of OncoSec. On September 28, 2011, the Company signed an amended agreement with OncoSec extending the term of the second payment owed to the Company in exchange for a warrant to purchase 50,000 shares of common stock of OncoSec. The warrant received was a five-year warrant with an exercise price of $24.00 per share. (See Note 6 for further discussion.) On March 24, 2012, the Company signed a second amended agreement with OncoSec further extending the term of the payments owed to the Company in exchange for a warrant to purchase 150,000 shares of common stock of OncoSec. The warrant received was a five-year warrant with an exercise price of $20.00 per share. (See Note 6 for further discussion.) Plumbline Life Sciences, Inc. In May 2014, the Company's 85% owned subsidiary VGX Animal Health entered into an agreement for the sale of its animal health assets to Plumbline Life Sciences, Inc. ("PLS") of Korea. The assets transferred included an exclusive license with Inovio for animal applications of its growth hormone-releasing hormone ("GHRH") technology and animal DNA vaccines plus a non-exclusive license to Inovio electroporation delivery systems. In May 2015, VGX Animal Health received payment of $1.0 million from PLS and is scheduled to receive an additional $1.0 million payment in 2016. No receivable has been recorded for the $1.0 million due from PLS as collection is uncertain. VGX Animal Health received 20% of the outstanding shares of PLS and received additional shares to maintain its 20% equity ownership position in PLS until equity fund-raising by PLS reached $10.0 million in June 2015. In July 2015 the Company's ownership in VGX Animal Health decreased from 91% to 85%. After the Company’s ownership changed, VGX Animal Health distributed its 465,364 shares of PLS to its shareholders in a pro-rata distribution. After the distribution, the Company held 395,758 shares, or approximately 16.9% of PLS common stock. As of September 30, 2015 the Company accounts for its ownership interest in PLS under the accounting guidance for investments considered available-for-sale (Accounting Standards Codification (ASC) 320). The original carrying value of the Company's investment in PLS was $0. On July 28, 2015, PLS registered on the Korea New Exchange (KONEX) Market. The total carrying value of the Company's investment in PLS was $7.1 million as of September 30, 2015. The fair value is based on the market value of the 395,758 common shares owned, listed on the KONEX. The changes in carrying value of PLS are recorded in the condensed consolidated statements of comprehensive income (loss) as an unrealized gain on investment in affiliated entity.

Related Party Transactions

GeneOne Life Sciences

On May 26, 2015, the Company entered into a Collaborative Development Agreement with GeneOne to co-develop a DNA vaccine for MERS (Middle East Respiratory Syndrome) through phase I clinical trials.

On September 23, 2014, the Company entered into a Collaborative Development Agreement with GeneOne to co-develop an Ebola vaccine through phase I clinical trials. In July 2015, the Company amended the Agreement with an effective date of April 2015 to change control of development in return for the Company’s payment of certain development fees.

On October 7, 2011, the Company entered into a Collaborative Development and License Agreement (the “Hep Agreement”) with GeneOne. Under the Hep Agreement, as originally executed, the Company and GeneOne agreed to co-develop the Company’s SynCon^® therapeutic vaccines for hepatitis B and C infections (the “Products”). Under the terms of the Hep Agreement, GeneOne will receive marketing rights for the Products in Asia, excluding Japan, and in return will fully fund IND-enabling and initial Phase I and II clinical studies with respect to the Products. The Company will receive from GeneOne payments based on the achievement of clinical milestones and royalties based on sales of the Products in the licensed territories, retaining all commercial rights to the Products in all other territories. On August 21, 2013, the Company amended the Hep Agreement to grant back to the Company hepatitis B, along with all associated rights, from the collaboration in return for certain remuneration including a percentage of license fees. On October 7, 2013, the Company further amended the Hep Agreement to in part provide exclusive patent rights to IL-28 technology for use with the Products in Asia, excluding Japan.

On March 24, 2010, the Company entered into a Collaboration and License Agreement (the “GeneOne Agreement”) with GeneOne. Under the GeneOne Agreement, the Company granted GeneOne an exclusive license to Inovio’s SynCon^® universal influenza vaccine delivered with electroporation to be developed in certain countries in Asia (the “Product”). As consideration for the license granted to GeneOne, the Company received payment of $3.0 million, and will receive research support, annual license maintenance fees and royalties on net Product sales. The Company recorded the $3.0 million as deferred revenue from affiliated entity, and will recognize it as revenue over the eight year expected period of the Company’s performance obligation. In addition, contingent upon achievement of clinical and regulatory milestones, the Company will receive development payments over the term of the GeneOne Agreement. The GeneOne Agreement also provides Inovio with exclusive rights to supply devices for clinical and commercial purposes (including single use components) to GeneOne for use in the Product. The term of the GeneOne Agreement commenced upon execution and will extend on a country by country basis until the last to expire of all Royalty Periods for the territory (as such term is defined in the GeneOne Agreement) for any Product in that country, unless the GeneOne Agreement is terminated earlier in accordance with its provisions as a result of breach, by mutual agreement, or by GeneOne's right to terminate without cause upon prior written notice.

For the three and nine months ended September 30, 2015, the Company recognized revenue from GeneOne of $113,000 and $338,000, respectively, which consisted of licensing and other fees. Operating expenses related to GeneOne for the three and nine months ended September 30, 2015 include $1.1 million and $6.5 million, respectively, related to biologics manufacturing. For the three and nine months ended September 30, 2014, the Company recognized revenue from GeneOne of $113,000 and $367,000, respectively, which consisted of licensing and other fees. Operating expenses related to GeneOne for the three and nine months ended September 30, 2014 include $413,000 and $4.1 million, respectively, related to biologics manufacturing. At September 30, 2015 and December 31, 2014, the Company had an accounts receivable balance of $0 and $2,000, respectively, and an accounts payable and accrued liability balance of $2.8 million and $28,000, respectively, related to GeneOne and its subsidiaries. At September 30, 2015 and December 31, 2014, $213,000 and $260,000 of prepayments made to GeneOne were classified as long-term other assets on the consolidated balance sheet, respectively.

OncoSec Medical Incorporated

The Company's non-executive Chairman, Dr. Avtar Dhillon, is also the non-executive Chairman of OncoSec.

On September 28, 2011, the Company signed an amended agreement with OncoSec extending the term of the second payment owed to the Company in exchange for a warrant to purchase 50,000 shares of common stock of OncoSec. The warrant received was a five-year warrant with an exercise price of $24.00 per share. (See Note 6 for further discussion.)

On March 24, 2012, the Company signed a second amended agreement with OncoSec further extending the term of the payments owed to the Company in exchange for a warrant to purchase 150,000 shares of common stock of OncoSec. The warrant received was a five-year warrant with an exercise price of $20.00 per share. (See Note 6 for further discussion.)

Plumbline Life Sciences, Inc.

In May 2014, the Company's 85% owned subsidiary VGX Animal Health entered into an agreement for the sale of its animal health assets to Plumbline Life Sciences, Inc. ("PLS") of Korea. The assets transferred included an exclusive license with Inovio for animal applications of its growth hormone-releasing hormone ("GHRH") technology and animal DNA vaccines plus a non-exclusive license to Inovio electroporation delivery systems. In May 2015, VGX Animal Health received payment of $1.0 million from PLS and is scheduled to receive an additional $1.0 million payment in 2016. No receivable has been recorded for the $1.0 million due from PLS as collection is uncertain.

VGX Animal Health received 20% of the outstanding shares of PLS and received additional shares to maintain its 20% equity ownership position in PLS until equity fund-raising by PLS reached $10.0 million in June 2015. In July 2015 the Company's ownership in VGX Animal Health decreased from 91% to 85%. After the Company’s ownership changed, VGX Animal Health distributed its 465,364 shares of PLS to its shareholders in a pro-rata distribution. After the distribution, the Company held 395,758 shares, or approximately 16.9% of PLS common stock.

As of September 30, 2015 the Company accounts for its ownership interest in PLS under the accounting guidance for investments considered available-for-sale (Accounting Standards Codification (ASC) 320). The original carrying value of the Company's investment in PLS was $0. On July 28, 2015, PLS registered on the Korea New Exchange (KONEX) Market. The total carrying value of the Company's investment in PLS was $7.1 million as of September 30, 2015. The fair value is based on the market value of the 395,758 common shares owned, listed on the KONEX. The changes in carrying value of PLS are recorded in the condensed consolidated statements of comprehensive income (loss) as an unrealized gain on investment in affiliated entity.