The amount of monthly cash fee payable under the master services agreement.

No definition available.

Name:	imnm_RelatedPartyTransactionMonthlyCashFeePayable
Namespace Prefix:	imnm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of obligations due all related parties.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=imnm_LicenseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=imnm_BroadbandServicesAgreementMember
Namespace Prefix:
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Balance Type:
Period Type:

Related party transactions (Details) - USD ($)	1 Months Ended	3 Months Ended
Related party transactions (Details) - USD ($)	Nov. 30, 2015	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
License agreement
Related Party Transaction [Line Items]
Due to related party		$ 0		$ 0
Broadband services agreement
Related Party Transaction [Line Items]
Monthly cash fee payment	$ 20,000
Stock Issued	827,640
Related party transaction, expenses		$ 100,000	$ 100,000