XML 148 R124.htm IDEA: XBRL DOCUMENT v3.21.1

Financial Risk management - Exposure to foreign exchange risk (Details) € in Thousands, $ in Millions			1 Months Ended			2 Months Ended	12 Months Ended
	Dec. 31, 2020 USD ($) contract	Jul. 15, 2020 USD ($)	Sep. 30, 2020 item	Jul. 31, 2020 USD ($)	Feb. 29, 2020 EUR (€)	Oct. 31, 2019 EUR (€)	Dec. 31, 2020 USD ($) contract	Dec. 31, 2020 EUR (€)	Dec. 31, 2019 EUR (€)	Dec. 31, 2018 EUR (€)
Disclosure of nature and extent of risks arising from financial instruments [line items]
Gross proceeds from initial public offering		$ 107.7		$ 107.7	€ 14,700	€ 8,900
Short-term deposits | €								€ 12,001	€ 14,004	€ 41,767
Number Of Derivative Contracts Completed	3		2
Notional amount	$ 60.0						$ 60.0
Number of forward contracts that had change in fair value. | contract							2
Change in fair value of future currency contracts	$ 60.0						$ 60.0
USD
Disclosure of nature and extent of risks arising from financial instruments [line items]
Term of the short-term deposits	6 months
Short-term deposits	$ 9.0						$ 9.0	€ 2,800

X

- Definition

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

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_NotionalAmount
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

A classification of cash equivalents representing short-term deposits. [Refer: Cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2020-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of change in fair value of derivatives as of the reporting date recorded in other current liabilities.

+ References

No definition available.

+ Details

Name:	iva_ChangeInFairValueOfDerivatives
Namespace Prefix:	iva_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of gross proceeds from issuing shares.

+ References

No definition available.

+ Details

Name:	iva_GrossProceedsFromIssuingShares
Namespace Prefix:	iva_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Number of derivative contracts completed during the period.

+ References

No definition available.

+ Details

Name:	iva_NumberOfDerivativeContractsCompleted
Namespace Prefix:	iva_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of forward contracts that had change in fair value.

+ References

No definition available.

+ Details

Name:	iva_NumberOfForwardContractsFairValueChange
Namespace Prefix:	iva_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Term of the short-term deposits of the company.

+ References

No definition available.

+ Details

Name:	iva_ShortTermDepositsTerm
Namespace Prefix:	iva_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_CurrencyAxis=currency_USD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: