The per share value of additional warrants exercise price.

No definition available.

Name:	imnm_AdditionalWarrantsExercisePrice
Namespace Prefix:	imnm_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of cashless warrants exercised.

+ References

No definition available.

+ Details

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Namespace Prefix:	imnm_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount net impact of deemed dividend to the statements of changes in stockholders' equity.

+ References

No definition available.

+ Details

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Namespace Prefix:	imnm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number shares issued in cashless exercise of warrants.

+ References

No definition available.

+ Details

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Namespace Prefix:	imnm_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Shares issued on exercise of warrant.

+ References

No definition available.

+ Details

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Namespace Prefix:	imnm_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of warrants exercised

+ References

No definition available.

+ Details

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Namespace Prefix:	imnm_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644

+ Details

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Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- 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

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

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of undistributed earnings (loss) allocated to participating securities for the basic earnings (loss) per share or per unit calculation under the two-class method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 65
-URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e2793-109256

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=125511455&loc=SL5780133-109256

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 66
-URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e2814-109256

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Balance Type:	debit
Period Type:	duration

- Details

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Data Type:	na
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Period Type:

- Details

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Data Type:	na
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- Details

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Common stock - Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Sep. 02, 2022	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2022	Sep. 01, 2022
Class of Warrant or Right [Line Items]
Deemed dividend	$ 600	$ 622
Impact of deemed dividend in stockholder' equity	$ 0
Series B Warrants
Class of Warrant or Right [Line Items]
Exercise price	$ 10.00			$ 10.00	$ 45.00
Strike price	$ 10.00			$ 10.00	$ 45.00
Warrants
Class of Warrant or Right [Line Items]
Exercise price			$ 9.00
Warrants exercised, numbers		0	148,653
Gross proceeds from issuance of warrants			$ 1,300
Exercise of common stock warrants (shares)			148,653
Additional warrants exercised on cashless			83,431
Shares issued in cashless exercise			52,326
Additional warrants exercise price			$ 9.00
Strike price			$ 9.00
Warrants \| Series A Warrants
Class of Warrant or Right [Line Items]
Warrants outstanding		803,112
Exercise price		$ 9.00
Strike price		$ 9.00
Warrants \| Series B Warrants
Class of Warrant or Right [Line Items]
Warrants outstanding		500,000
Exercise price		$ 10.00
Strike price		$ 10.00