Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Assets:
Debt securities, available for sale	$ 158,535,744
Investment in affiliated entities	4,154,049	$ 6,315,356
Liabilities:
Derivative liability (Note 9)	0	8,819,023
Significant Unobservable Inputs (Level 3)
Liabilities:
Derivative liability (Note 9)	7,100,000
Mutual funds
Assets:
Debt securities, available for sale	152,802,199	67,338,017
Corporate debt securities
Assets:
Debt securities, available for sale	1,172,160
Certificates of deposit
Assets:
Debt securities, available for sale	3,032,980
U.S. agency mortgage-backed securities
Assets:
Debt securities, available for sale	1,528,405
Fair Value, Measurements, Recurring
Assets:
Debt securities, available for sale	158,535,744
Investment in affiliated entities	4,154,049	6,315,356
Total assets measured at fair value	262,674,793	76,003,102
Liabilities:
Derivative liability (Note 9)		8,819,023
Total liabilities		8,819,023
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets (Level 1)
Assets:
Debt securities, available for sale	153,974,359
Investment in affiliated entities	4,154,049	6,315,356
Total assets measured at fair value	258,113,408	76,003,102
Liabilities:
Derivative liability (Note 9)		0
Total liabilities		0
Fair Value, Measurements, Recurring \| Significant Other Unobservable Inputs (Level 2)
Assets:
Debt securities, available for sale	4,561,385
Investment in affiliated entities	0	0
Total assets measured at fair value	4,561,385	0
Liabilities:
Derivative liability (Note 9)		0
Total liabilities		0
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3)
Assets:
Debt securities, available for sale	0
Investment in affiliated entities	0	0
Total assets measured at fair value	0	0
Liabilities:
Derivative liability (Note 9)		8,819,023
Total liabilities		8,819,023
Fair Value, Measurements, Recurring \| U.S. treasury securities
Assets:
Cash and cash equivalents, fair value	99,985,000
Fair Value, Measurements, Recurring \| U.S. treasury securities \| Quoted Prices in Active Markets (Level 1)
Assets:
Cash and cash equivalents, fair value	99,985,000
Fair Value, Measurements, Recurring \| U.S. treasury securities \| Significant Other Unobservable Inputs (Level 2)
Assets:
Cash and cash equivalents, fair value	0
Fair Value, Measurements, Recurring \| U.S. treasury securities \| Significant Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents, fair value	0
Fair Value, Measurements, Recurring \| Mutual funds
Assets:
Debt securities, available for sale	152,802,199	67,338,017
Fair Value, Measurements, Recurring \| Mutual funds \| Quoted Prices in Active Markets (Level 1)
Assets:
Debt securities, available for sale	152,802,199	67,338,017
Fair Value, Measurements, Recurring \| Mutual funds \| Significant Other Unobservable Inputs (Level 2)
Assets:
Debt securities, available for sale	0	0
Fair Value, Measurements, Recurring \| Mutual funds \| Significant Unobservable Inputs (Level 3)
Assets:
Debt securities, available for sale	0	0
Fair Value, Measurements, Recurring \| Corporate debt securities
Assets:
Debt securities, available for sale	1,172,160
Fair Value, Measurements, Recurring \| Corporate debt securities \| Significant Other Unobservable Inputs (Level 2)
Assets:
Debt securities, available for sale	0
Fair Value, Measurements, Recurring \| Corporate debt securities \| Significant Unobservable Inputs (Level 3)
Assets:
Debt securities, available for sale	0
Fair Value, Measurements, Recurring \| Certificates of deposit
Assets:
Debt securities, available for sale	3,032,980
Fair Value, Measurements, Recurring \| Certificates of deposit \| Quoted Prices in Active Markets (Level 1)
Assets:
Debt securities, available for sale	0
Fair Value, Measurements, Recurring \| Certificates of deposit \| Significant Other Unobservable Inputs (Level 2)
Assets:
Debt securities, available for sale	3,032,980
Fair Value, Measurements, Recurring \| Certificates of deposit \| Significant Unobservable Inputs (Level 3)
Assets:
Debt securities, available for sale	0
Fair Value, Measurements, Recurring \| Money market funds
Assets:
Cash and cash equivalents, fair value		2,349,729
Fair Value, Measurements, Recurring \| Money market funds \| Quoted Prices in Active Markets (Level 1)
Assets:
Cash and cash equivalents, fair value		2,349,729
Fair Value, Measurements, Recurring \| Money market funds \| Significant Other Unobservable Inputs (Level 2)
Assets:
Cash and cash equivalents, fair value		0
Fair Value, Measurements, Recurring \| Money market funds \| Significant Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents, fair value		$ 0
Fair Value, Measurements, Recurring \| U.S. agency mortgage-backed securities
Assets:
Debt securities, available for sale	1,528,405
Fair Value, Measurements, Recurring \| U.S. agency mortgage-backed securities \| Quoted Prices in Active Markets (Level 1)
Assets:
Debt securities, available for sale	0
Fair Value, Measurements, Recurring \| U.S. agency mortgage-backed securities \| Significant Other Unobservable Inputs (Level 2)
Assets:
Debt securities, available for sale	1,528,405
Fair Value, Measurements, Recurring \| U.S. agency mortgage-backed securities \| Significant Unobservable Inputs (Level 3)
Assets:
Debt securities, available for sale	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121558606&loc=SL82898722-210454

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121553693&loc=d3e26610-111562

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563

+ Details

Name:	us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

No definition available.

+ Details

Name:	us-gaap_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313

+ Details

Name:	us-gaap_DerivativeLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740

+ Details

Name:	us-gaap_EquitySecuritiesFvNi
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

+ References

No definition available.

+ Details

Name:	us-gaap_FinancialLiabilitiesFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_LiabilitiesFairValueDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=ino_MutualFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_USTreasuryBillSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: