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Subsequent Events (Details) - Coalition for Epidemic Preparedness Innovations - Subsequent Event $ in Millions | Apr. 11, 2018 USD ($)
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Subsequent Event [Line Items] |
Collaborative agreement, funding to be received | $ 56
Collaborative agreement, period to receive funding for research and development | 5 years

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- Definition Collaborative Agreeement, Funding Received for Research and Development + References No definition available. + Details
Name: | ino_CollaborativeAgreementFundingToBeReceived
Namespace Prefix: | ino_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Collaborative Agreement, Period to Receive Funding for Research and Development + References No definition available. + Details
Name: | ino_CollaborativeAgreementPeriodtoReceiveFundingforResearchandDevelopment
Namespace Prefix: | ino_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_CounterpartyNameAxis=ino_CoalitionforEpidemicPreparednessInnovationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |