XML 149 R125.htm IDEA: XBRL DOCUMENT
v3.21.1

Financial Risk management - Exposure to foreign exchange risk - Sensitivity Analysis (Details) - EUR (€) € in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Fair value of financial assets | € 120,417 | € 39,545 | € 59,612
Exposure to foreign exchange risk | USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Percentage of reasonably possible increase (decrease) in risk assumption | 5.00% |  |
Cash and cash equivalents |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Fair value of financial assets | € 105,687 | € 35,840 | € 56,692
Cash and cash equivalents | Exposure to foreign exchange risk | USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Fair value of financial assets | 72,429 |  |
Impact of a 5% change in fair value | (3,449) |  |
Short-term deposit accounts |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Fair value of financial assets | 7,336 |  |
Short-term deposit accounts | Exposure to foreign exchange risk | USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Fair value of financial assets | 7,336 |  |
Impact of a 5% change in fair value | € (349) |  |

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 fair value of financial assets. [Refer: At fair value [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_25&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_FinancialAssetsAtFairValue
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The increase (decrease) in a financial instrument as a result of an increase (decrease) in a designated risk component that was reasonably possible at the end of the reporting period. Excludes defined benefit plan obligations. + References No definition available. + Details
Name: | iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInDesignatedRiskComponent
Namespace Prefix: | iva_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The reasonably possible percentage of the increase (decrease) in the designated risk component used to determine the value of the financial instrument. Excludes defined benefit plan obligations. + References No definition available. + Details
Name: | iva_PercentageOfReasonablyPossibleIncreaseDecreaseInRiskAssumption
Namespace Prefix: | iva_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_CurrencyRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=currency_USD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=iva_IfrsCashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=iva_ShortTermDepositAccountsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |