Equity and Other Investments and Fair Value Measurements - (Additional Information) (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Fair Value Disclosures [Abstract]
Fair value of assets or liabilities transfer between levels	$ 0	$ 0	$ 0	$ 0

Fair Value Of Assets Or Liabilities Transfer Between Levels

No definition available.

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