The period for which the entity entered in to the contract.

No definition available.

Name:	nrbo_ContractTerm
Namespace Prefix:	nrbo_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of manufacturing related costs.

+ References

No definition available.

+ Details

Name:	nrbo_ManufacturingRelatedCosts
Namespace Prefix:	nrbo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Refers to milestones accrued.

+ References

No definition available.

+ Details

Name:	nrbo_MilestonesAccrued
Namespace Prefix:	nrbo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The number of Proprietary compounds to be received by the company in a license agreement.

+ References

No definition available.

+ Details

Name:	nrbo_NumberOfProprietaryCompoundsToBeReceivedThroughLicenseAgreement
Namespace Prefix:	nrbo_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The period for failing to cure the beach, the agreement may get terminated.

+ References

No definition available.

+ Details

Name:	nrbo_PeriodForFailToCureBreachMayTerminateAgreement
Namespace Prefix:	nrbo_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The notice period for purchase order prior to the requested delivery date.

+ References

No definition available.

+ Details

Name:	nrbo_PeriodForReceiptsOfPurchaseOrderPriorToRequestedDeliveryDate
Namespace Prefix:	nrbo_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The period for petition for termination notice for the other party's material breach that is not cured.

+ References

No definition available.

+ Details

Name:	nrbo_PeriodForTerminationNotice
Namespace Prefix:	nrbo_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(15)(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.15(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

+ Details

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

- Definition

Indicates type of related party for accounts payable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of transactions with related party during the financial reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-3

+ Details

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c)(2)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c)(2)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(g)(3))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

+ Details

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

- Details

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

- Details

Name:	srt_CounterpartyNameAxis=nrbo_DongStMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=nrbo_SharedServicesAgreementMember
Namespace Prefix:
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Related Party Transactions (Details) $ in Thousands				3 Months Ended		6 Months Ended
Related Party Transactions (Details) $ in Thousands	Sep. 14, 2022 item	Jun. 07, 2020	Sep. 28, 2018	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Related Party Transactions
Accounts Payable, Related Party, Type [Extensible Enumeration]				us-gaap:RelatedPartyMember		us-gaap:RelatedPartyMember
Amount of milestones accrued				$ 0		$ 0
Manufacturing and Supply Agreement \| Dong-A
Related Party Transactions
Term of agreement		5 years	5 years
Manufacturing related costs				0	$ 0	0	$ 0
Notice period for purchase order prior to requested delivery date		270 days
Costs incurred under the Manufacturing Agreement remained unpaid				$ 0		0		$ 0
Dong A ST License Agreement \| Dong-A
Related Party Transactions
Number of proprietary compounds in a license \| item	2
Shared Services Agreement \| Dong-A
Related Party Transactions
Total consideration						$ 2,149
Period for termination notice when material breach not cured	30 days
Period for failing to cure the beach, the agreement may get terminated	30 days