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

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

- Definition

Number shares issued in cashless exercise of warrants.

+ References

No definition available.

+ Details

Name:	imnm_SharesIssuedInCashlessExerciseOfWarrants
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

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

- Definition

Number of warrants exercised

+ References

No definition available.

+ Details

Name:	imnm_WarrantsExercisedNumbers
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

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
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

Name:	us-gaap_ClassOfWarrantOrRightLineItems
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

Name:	us-gaap_ClassOfWarrantOrRightOutstanding
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

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfWarrants
Namespace Prefix:	us-gaap_
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
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=125511455&loc=SL5780133-109256

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-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

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=imnm_SeriesbWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_WarrantyRightsAndObligationsFairValueOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=imnm_SeriesaWarrantsMember
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Period Type:

Common stock - Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	9 Months Ended
	Sep. 02, 2022	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 01, 2022
Class of Warrant or Right [Line Items]
Deemed dividend	$ 600	$ 622	$ 622
Series B Warrants
Class of Warrant or Right [Line Items]
Exercise price	$ 10.00	$ 10.00	$ 10.00		$ 45.00
Strike price	$ 10.00	$ 10.00	$ 10.00		$ 45.00
Warrants
Class of Warrant or Right [Line Items]
Warrants outstanding		1,303,112	1,303,112
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				72,320
Shares issued in cashless exercise				45,322
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	803,112
Exercise price		$ 9.00	$ 9.00
Strike price		$ 9.00	$ 9.00
Warrants \| Series B Warrants
Class of Warrant or Right [Line Items]
Warrants outstanding		500,000	500,000
Exercise price		$ 10.00	$ 10.00
Strike price		$ 10.00	$ 10.00