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Fair Value Measurements (Details 1) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Assumptions used to estimate the fair values of the common stock warrants |  |
Dividend yield | $ 0 us-gaap_FairValueAssumptionsExpectedDividendPayments | $ 0 us-gaap_FairValueAssumptionsExpectedDividendPayments
Minimum |  |
Assumptions used to estimate the fair values of the common stock warrants |  |
Risk-free interest rate | 1.10%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_RangeAxis = us-gaap_MinimumMember | 0.10%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_RangeAxis = us-gaap_MinimumMember
Expected volatility | 81.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_RangeAxis = us-gaap_MinimumMember | 90.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_RangeAxis = us-gaap_MinimumMember
Expected life in years |  | 6 months
Maximum |  |
Assumptions used to estimate the fair values of the common stock warrants |  |
Risk-free interest rate |  | 1.80%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_RangeAxis = us-gaap_MaximumMember
Expected volatility |  | 112.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate / us-gaap_RangeAxis = us-gaap_MaximumMember
Expected life in years | 3 years 8 months 12 days | 4 years 8 months 12 days
OncoSec common stock warrants |  |
Assumptions used to estimate the fair values of the common stock warrants |  |
Risk-free interest rate | 0.67%us-gaap_FairValueAssumptionsRiskFreeInterestRate / ino_OncoSecCommonStockWarrantsAxis = ino_OncoSecCommonStockWarrantsMember | 0.78%us-gaap_FairValueAssumptionsRiskFreeInterestRate / ino_OncoSecCommonStockWarrantsAxis = ino_OncoSecCommonStockWarrantsMember
Expected volatility | 90.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate / ino_OncoSecCommonStockWarrantsAxis = ino_OncoSecCommonStockWarrantsMember | 85.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate / ino_OncoSecCommonStockWarrantsAxis = ino_OncoSecCommonStockWarrantsMember
Dividend yield | $ 0 us-gaap_FairValueAssumptionsExpectedDividendPayments / ino_OncoSecCommonStockWarrantsAxis = ino_OncoSecCommonStockWarrantsMember | $ 0 us-gaap_FairValueAssumptionsExpectedDividendPayments / ino_OncoSecCommonStockWarrantsAxis = ino_OncoSecCommonStockWarrantsMember
OncoSec common stock warrants | Minimum |  |
Assumptions used to estimate the fair values of the common stock warrants |  |
Expected life in years | 1 year 9 months | 2 years 9 months
OncoSec common stock warrants | Maximum |  |
Assumptions used to estimate the fair values of the common stock warrants |  |
Expected life in years | 2 years 9 months | 3 years 3 months

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- Definition Amount of dividends expected to be paid to holders of the underlying shares or contracted instruments over the term of the instruments life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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