XML 86 R62.htm IDEA: XBRL DOCUMENT
v3.21.1

Company Information - Surety provided to the French tax authorities (Details) € in Thousands | Dec. 31, 2020 EUR (€) item | Jun. 30, 2020 EUR (€) | Dec. 31, 2019 EUR (€) | Feb. 01, 2019 EUR (€) item | Dec. 31, 2018 EUR (€)
--- | --- | --- | --- | --- | ---
Other Non Current Assets [Line Items] |  |  |  |  |
Amount of guarantee | € 1,700 |  |  |  |
Longterm deposit accounts | 1,698 |  | € 792 |  | € 108
Amount of pledge as a percentage of sum not covered by the indemnity to be received |  |  |  | 50.00% |
Tax Disputees With French Tax Authorities |  |  |  |  |
Other Non Current Assets [Line Items] |  |  |  |  |
Amount of guarantee | € 1,700 |  |  | € 1,700 |
Number of pledges over cash | item | 2 |  |  | 2 |
Pledge over cash, one | Tax Disputees With French Tax Authorities |  |  |  |  |
Other Non Current Assets [Line Items] |  |  |  |  |
Amount of guarantee |  |  |  | € 700 |
Number of pledges over cash | item |  |  |  | 1 |
Amount of pledge as a percentage of sum not covered by the indemnity to be received |  |  |  | 50.00% |
Pledge over cash, two |  |  |  |  |
Other Non Current Assets [Line Items] |  |  |  |  |
Amount of guarantee | € 1,000 |  |  |  |
Pledge over cash, two | Tax Disputees With French Tax Authorities |  |  |  |  |
Other Non Current Assets [Line Items] |  |  |  |  |
Amount of guarantee |  | € 1,000 |  |  |
Crdit Agricole bank |  |  |  |  |
Other Non Current Assets [Line Items] |  |  |  |  |
Number of pledges over cash | item | 2 |  |  |  |
Amount of pledge as a percentage of sum not covered by the indemnity to be received | 50.00% |  |  |  |
Crdit Agricole bank | If dispute remains unresolved |  |  |  |  |
Other Non Current Assets [Line Items] |  |  |  |  |
Amount of guarantee | € 3,400 |  |  |  |
Crdit Agricole bank | Tax Disputees With French Tax Authorities |  |  |  |  |
Other Non Current Assets [Line Items] |  |  |  |  |
Amount of guarantee | 3,400 |  |  | € 3,400 |
Crdit Agricole bank | Pledge over cash, one |  |  |  |  |
Other Non Current Assets [Line Items] |  |  |  |  |
Amount of guarantee | € 700 |  |  |  |
Number of pledges over cash | item | 1 |  |  |  |

X
- Definition The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Contingent liabilities [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 14 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_14_a&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition It represents information about non current long term deposits from customers. + References No definition available. + Details
Name: | iva_NonCurrentLongTermDepositsFromCustomers
Namespace Prefix: | iva_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of pledges that the company has pledged over cash. + References No definition available. + Details
Name: | iva_NumberOfPledgesOverCash
Namespace Prefix: | iva_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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: | iva_OtherNonCurrentAssetsLineItems
Namespace Prefix: | iva_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the pledge as percentage of sum not covered by the indemnity. + References No definition available. + Details
Name: | iva_PledgeAsPercentageOfSumNotCoveredByIndemnityPercent
Namespace Prefix: | iva_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=iva_TaxDisputeesWithFrenchTaxAuthoritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | iva_PledgeAxis=iva_PledgeOverCashOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | iva_PledgeAxis=iva_PledgeOverCashTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CounterpartiesAxis=iva_CreditAgricoleBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=iva_DisputeUnresolvedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |