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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
	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

X

- 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

X

- References

No definition available.

+ Details

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Namespace Prefix:	inmb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	inmb_MilestonePaymentsAxis=inmb_EachPhaseIIIInitiationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: