The amount of expense on milestone payments on license agreement.

No definition available.

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Namespace Prefix:	imnm_
Data Type:	xbrli:monetaryItemType
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- Definition

The amount of license fee payable on certain development, regulatory and commercial milestones payments.

+ References

No definition available.

+ Details

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- Definition

The amount of license fee payable on each product for certain development, regulatory and commercial milestones payments.

+ References

No definition available.

+ Details

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- Definition

The amount of license fee payable on product development and regulatory approval milestones.

+ References

No definition available.

+ Details

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- Definition

Number of research institutions.

+ References

No definition available.

+ Details

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- 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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- Definition

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 730
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373

+ Details

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- Details

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- Details

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Licensing arrangements (Details)	12 Months Ended
Licensing arrangements (Details)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2009 USD ($) Institution
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Research and development expense	$ 7,486,000	$ 8,823,000
2009 license agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of research institutions \| Institution				2
License fee payable on certain development regulatory and commercial milestones				$ 700,000
License fee payable for each product on certain development regulatory and commercial milestones				$ 300,000
Expense on milestone payments	0	0
2012 license agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Expense on milestone payments	0	0
2012 license agreement \| Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Product development and regulatory approval milestone payments			$ 1,000,000.0
2019 license agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Research and development expense	$ 175,000	$ 63,000