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Research and Development Activity - Schedule of PITT Agreement Licensee is Required to make Milestone Payments (Details) - PITT Agreement [Member] $ in Thousands | 9 Months Ended
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Sep. 30, 2025 USD ($)
Each Phase I initiation [Member] |
Schedule of PITT Agreement Licensee is Required to make Milestone Payments [Line Items] |
Payment method of milestone payments | $ 50
Each Phase III initiation [Member] |
Schedule of PITT Agreement Licensee is Required to make Milestone Payments [Line Items] |
Payment method of milestone payments | 500
First commercial sale of product making use of licensed technology [Member] |
Schedule of PITT Agreement Licensee is Required to make Milestone Payments [Line Items] |
Payment method of milestone payments | $ 1,250

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- Definition Represent the amount of milestone payments. + References No definition available. + Details
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Namespace Prefix: | inmb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | inmb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_TypeOfArrangementAxis=inmb_PITTAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | inmb_MilestonePaymentsAxis=us-gaap_TechnologyBasedIntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |