Represents the amortization of capitalized fees paid to a related party.

No definition available.

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Namespace Prefix:	inva_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Represents the royalty rate for combination products.

+ References

No definition available.

+ Details

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Namespace Prefix:	inva_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the potential future contingent payments that the entity is eligible to receive.

+ References

No definition available.

+ Details

Name:	inva_CollaborativeArrangementContingentPaymentThatEntityCouldEarn
Namespace Prefix:	inva_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the maximum amount of potential milestone payments that could be payable.

+ References

No definition available.

+ Details

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Namespace Prefix:	inva_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the amount of registrational and launch-related milestone fee paid under the collaborative arrangement.

+ References

No definition available.

+ Details

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Namespace Prefix:	inva_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the royalty rate which the entity will receive under the collaboration agreement on the first defined level of annual global net sales.

+ References

No definition available.

+ Details

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Namespace Prefix:	inva_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the royalty rate which the entity will receive under the collaboration agreement on sales which exceed the first defined level of annual global net sales.

+ References

No definition available.

+ Details

Name:	inva_CollaborativeArrangementRoyaltyRateDefinedLevelTwo
Namespace Prefix:	inva_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the annual global net sales amount which determines the royalty rate applied under the collaboration arrangement.

+ References

No definition available.

+ Details

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Namespace Prefix:	inva_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Revenue earned under collaborative arrangements from upfront payments and contingent payments.

+ References

No definition available.

+ Details

Name:	inva_CollaborativeArrangementsRevenue
Namespace Prefix:	inva_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the percentage of milestone payment which company is entitled to receive.

+ References

No definition available.

+ Details

Name:	inva_EligiblePercentageOfMilestonePayment
Namespace Prefix:	inva_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of shares sold during the reporting period.

+ References

No definition available.

+ Details

Name:	inva_InvestmentOwnedSharesSold
Namespace Prefix:	inva_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents revenue net of amortization expense for capitalized fees paid to a related party during the period from the leasing or otherwise lending to a related party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. An example of property from which royalties may be derived includes patents.

+ References

No definition available.

+ Details

Name:	inva_RoyaltyRevenueFromRelatedPartyNet
Namespace Prefix:	inva_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

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

- Definition

Revenue earned during the period from the leasing or otherwise lending to a third party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. Examples of property from which royalties may be derived include patents and oil and mineral rights.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

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

- Details

Name:	invest_InvestmentIssuerAxis=inva_TheravanceBiopharmaMember
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- Details

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- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

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Data Type:	na
Balance Type:
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- Details

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- Details

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- Details

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Collaborative Arrangements (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2014
Information related to collaborative arrangements
Less: amortization of capitalized fees paid to a related party	$ (3,456)	$ (3,456)
Royalty revenue	23,955	6,674
Revenue from collaborative arrangements	221	222
Total net revenue	24,176	$ 6,896
Theravance Biopharma \| Common Stock
Information related to collaborative arrangements
Number of ordinary shares sold		436,802
GSK
Information related to collaborative arrangements
Royalties from a related party	27,411	$ 10,130
Less: amortization of capitalized fees paid to a related party	(3,456)	(3,456)
Royalty revenue	23,955	6,674
Total net revenue	24,176	6,896
GSK \| MABA
Information related to collaborative arrangements
Potential future contingent payments receivable	$ 363,000
Percentage of milestone payment	15.00%
Long-acting beta agonist (LABA) collaboration \| GSK
Information related to collaborative arrangements
Less: amortization of capitalized fees paid to a related party	$ (3,500)	(3,500)
Milestone fees paid			$ 220,000
Obligation for milestone payments	$ 0
Royalty rate for first level of annual global net sales (as a percent)	15.00%
Annual global sales level used to determine royalty rate	$ 3,000,000
Royalty rate for sales above first level of annual global net sales (as a percent)	5.00%
Long-acting beta agonist (LABA) collaboration \| GSK \| Minimum
Information related to collaborative arrangements
Royalty rate for combination products (as a percent)	6.50%
Long-acting beta agonist (LABA) collaboration \| GSK \| Maximum
Information related to collaborative arrangements
Royalty rate for combination products (as a percent)	10.00%
2004 Strategic alliance \| GSK \| MABA
Information related to collaborative arrangements
Revenue from collaborative arrangements	$ 221	$ 222