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Fair Value Measurements (Details Textual) (USD $) | 12 Months Ended | 1 Months Ended
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2011 | Mar. 31, 2012
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |
Long-term asset associated with warrants | $ 550,000 ino_WarrantsReceivedDuringPeriod |  |  |  |
Gain on sale of asset | 501,000 us-gaap_GainsLossesOnSalesOfAssets |  |  |  |
Change in the fair value | (516,000)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings | 46,100,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings | (2,300,000)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings |  |
Common stock warrants | 2,022,729 us-gaap_WarrantsAndRightsOutstanding | 19,540,583 us-gaap_WarrantsAndRightsOutstanding |  |  |
First warrant |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |
Change in the fair value | (168,000)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings / us-gaap_FinancialInstrumentAxis = ino_FirstWarrantMember | 450,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings / us-gaap_FinancialInstrumentAxis = ino_FirstWarrantMember | (334,000)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings / us-gaap_FinancialInstrumentAxis = ino_FirstWarrantMember |  |
Using Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |
Number of shares held in an affiliated entity | 8,220,775 us-gaap_InvestmentsInAndAdvancesToAffiliatesBalanceShares / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 8,220,775 us-gaap_InvestmentsInAndAdvancesToAffiliatesBalanceShares / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member |  |  |
Using Significant Unobservable Inputs (Level 3) |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |
Number of warrants received to purchase shares of common stock | 2 ino_NumberOfWarrantsReceivedToPurchaseSharesOfCommonStock / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member |  |  |  |
Common stock purchase warrant (shares) | 2,419,425 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member |  |  |  |
Change in the fair value | $ (515,643)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | $ 46,082,969 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member |  |  |
Using Significant Unobservable Inputs (Level 3) | First warrant |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |
Common stock purchase warrant (shares) |  |  |  | 1,000,000 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FinancialInstrumentAxis = ino_FirstWarrantMember |
Term of the warrants in years |  |  |  | 5 years |
Exercise price of a five-year warrant ($ per share) |  |  |  | $ 1.20 invest_InvestmentWarrantsExercisePrice / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FinancialInstrumentAxis = ino_FirstWarrantMember |
Using Significant Unobservable Inputs (Level 3) | Second warrant |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |
Common stock purchase warrant (shares) |  |  |  |  | 3,000,000 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FinancialInstrumentAxis = ino_SecondWarrantMember
Term of the warrants in years |  |  |  |  | 5 years
Exercise price of a five-year warrant ($ per share) |  |  |  |  | $ 1.00 invest_InvestmentWarrantsExercisePrice / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FinancialInstrumentAxis = ino_SecondWarrantMember

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