XML 115 R42.htm IDEA: XBRL DOCUMENT
v3.25.1

Leases - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Apr. 07, 2020
Leases [Line Items] |  |  |
Operating and variable lease costs | $ 1,100 | $ 900 |
New York City |  |  |
Leases [Line Items] |  |  |
Renewal option period (in months) | 12 months |  |
Additions to right-of-use assets | $ 448 |  |
Incremental borrowing rate on operating leases | 6.00% |  |
Grafelfing, Germany |  |  |
Leases [Line Items] |  |  |
Lease term (in months) |  |  | 5 years
Additions to right-of-use assets | $ 448 |  |
Planegg, Germany |  |  |
Leases [Line Items] |  |  |
Additions to right-of-use assets | $ 544 |  |
Incremental borrowing rate on operating leases | 8.00% |  |

X
- Definition Increase (Decrease) In Operating Lease, Right-Of-Use Asset + References No definition available. + Details
Name: | imux_IncreaseDecreaseInOperatingLeaseRightOfUseAsset
Namespace Prefix: | imux_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Operating And Variable Leases, Cost + References No definition available. + Details
Name: | imux_OperatingAndVariableLeasesCost
Namespace Prefix: | imux_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Operating Lease, Incremental Borrowing Rate + References No definition available. + Details
Name: | imux_OperatingLeaseIncrementalBorrowingRate
Namespace Prefix: | imux_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_LesseeOperatingLeaseRenewalTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_StatementGeographicalAxis=imux_NewYorkCityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=imux_GrafelfingGermanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=imux_PlaneggGermanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |