Collaboration agreement termination description.

No definition available.

Name:	nmra_CollaborationAgreementTerminationDescription
Namespace Prefix:	nmra_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Commercial milestone payments.

+ References

No definition available.

+ Details

Name:	nmra_CommercialMilestonePayments
Namespace Prefix:	nmra_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Deferred funding current.

+ References

No definition available.

+ Details

Name:	nmra_DeferredFundingCurrent
Namespace Prefix:	nmra_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Development and regulatory milestone payments.

+ References

No definition available.

+ Details

Name:	nmra_DevelopmentAndRegulatoryMilestonePayments
Namespace Prefix:	nmra_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Fund received upon completion of certain development milestone.

+ References

No definition available.

+ Details

Name:	nmra_FundReceivedUponCompletionOfCertainDevelopmentMilestone
Namespace Prefix:	nmra_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Funds provided for pre-clinical research and development activities.

+ References

No definition available.

+ Details

Name:	nmra_FundsProvidedForPreClinicalResearchAndDevelopmentActivities
Namespace Prefix:	nmra_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Maximum repayment amount agreed to pay.

+ References

No definition available.

+ Details

Name:	nmra_MaximumRepaymentAmountAgreedToPay
Namespace Prefix:	nmra_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Maximum repayment obligation.

+ References

No definition available.

+ Details

Name:	nmra_MaximumRepaymentObligation
Namespace Prefix:	nmra_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Milestone Payments

+ References

No definition available.

+ Details

Name:	nmra_MilestonePayments
Namespace Prefix:	nmra_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Payments for execution of agreement.

+ References

No definition available.

+ Details

Name:	nmra_PaymentsForExecutionOfAgreement
Namespace Prefix:	nmra_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Related party transaction obligation with related party.

+ References

No definition available.

+ Details

Name:	nmra_RelatedPartyTransactionObligationWithRelatedParty
Namespace Prefix:	nmra_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Research agreement expiry date.

+ References

No definition available.

+ Details

Name:	nmra_ResearchAgreementExpiryDate
Namespace Prefix:	nmra_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Research and collaboration agreement payments.

+ References

No definition available.

+ Details

Name:	nmra_ResearchAndCollaborationAgreementPayments
Namespace Prefix:	nmra_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Research And Collaboration Agreement Quarterly Payments

+ References

No definition available.

+ Details

Name:	nmra_ResearchAndCollaborationAgreementQuarterlyPayments
Namespace Prefix:	nmra_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for royalties.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(15)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

+ Details

Name:	us-gaap_AccruedRoyaltiesCurrentAndNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 808
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479402/808-10-50-1

+ Details

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

- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_PrepaidExpenseAndOtherAssetsCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-18

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-14

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 48
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-48

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481283/985-20-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 730
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482916/730-10-50-1

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 912
-SubTopic 730
-Name Accounting Standards Codification
-Section 25
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479532/912-730-25-1

+ Details

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

- Details

Name:	us-gaap_TypeOfArrangementAxis=nmra_TwoThousandAndFifteenTsriLicenseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=nmra_AmgenResearchAndCollaborationAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=nmra_VanderbiltSponsoredResearchAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=nmra_SecondVanderbiltSponsoredResearchAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=nmra_ParkinsonsResearchVenturesFundingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Strategic License and Research and Collaboration Agreements - Additional Information (Details) £ in Millions	1 Months Ended								12 Months Ended
	Nov. 30, 2025 USD ($)	Oct. 31, 2025 USD ($)	Jan. 31, 2025 USD ($)	May 31, 2024 USD ($)	Mar. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)	Feb. 28, 2022 USD ($)	Nov. 30, 2015 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2025 GBP (£)	Dec. 31, 2024 USD ($)	May 31, 2025 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Prepaid research and development costs									$ 8,007,000		$ 5,264,000
Research and development expenses									176,065,000		200,927,000
Fund received upon completion of certain development milestone			$ 1,500
2015 TSRI License Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone Payments						$ 300,000
Accrued Royalties									$ 0
2015 TSRI License Agreement \| Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Development and regulatory milestone payments								$ 1,500,000
Commercial milestone payments								$ 3,500,000
Amgen Research and Collaboration Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Collaboration agreement termination description									The Amgen Collaboration Agreement automatically terminated upon its third anniversary in September 2024.	The Amgen Collaboration Agreement automatically terminated upon its third anniversary in September 2024.
Related party transaction obligation with related party									$ 0		6,300,000	$ 6,300,000
Research and development expenses									$ 6,300,000		12,500,000
Vanderbilt Research Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Research and collaboration agreement quarterly payments							$ 1,700,000
Research agreement expiry date									2023-09	2023-09
Second Vanderbilt Research Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Research agreement expiry date									2024-11	2024-11
Second Vanderbilt Research Agreement \| Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Research and collaboration agreement payments				$ 600,000
Parkinson's Research Ventures Funding Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Research and development expenses									$ 1,600,000		$ 800,000
Payments for execution of agreement	$ 1,700,000				$ 1,100,000
Deferred funding									1,700,000
Maximum repayment obligation		$ 6,600,000
Maximum Repayment Amount Agreed To Pay \| £										£ 8.4
Parkinson's Research Ventures Funding Agreement \| Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Funds provided for preclinical research and development activities		$ 3,300,000							$ 2,600,000