Stock Purchase Agreement, Commitment Of Additional Investment

No definition available.

Name:	ino_StockPurchaseAgreementCommitmentOfAdditionalInvestment
Namespace Prefix:	ino_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow associated with the purchase of noncontrolling interest during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockConsiderationReceivedOnTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=ino_GeneosTherapeuticsInc.Member
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=ino_GeneosTherapeuticsInc.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Geneos Therapeutics, Inc. (Details) - USD ($) $ in Millions	1 Months Ended
Geneos Therapeutics, Inc. (Details) - USD ($) $ in Millions	Jan. 31, 2020	Feb. 28, 2019	Mar. 31, 2020
Geneos Therapeutics, Inc.
Noncontrolling Interest [Line Items]
Sale of stock, consideration received		$ 4.5
Geneos Therapeutics, Inc.
Noncontrolling Interest [Line Items]
Payments to acquire additional interest in subsidiaries	$ 3.0	$ 1.2
Stock purchase agreement, commitment of additional investment	$ 0.8
Noncontrolling interest, ownership percentage by parent			52.00%