Price of a Commitment share.

No definition available.

Name:	nbrv_CommitmentSharePrice
Namespace Prefix:	nbrv_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from the additional capital contribution to the entity before deduction of issuance expenses.

+ References

No definition available.

+ Details

Name:	nbrv_GrossProceedsFromIssuanceOfCommonStock
Namespace Prefix:	nbrv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

n/a

+ References

No definition available.

+ Details

Name:	nbrv_LiquidityAbstract
Namespace Prefix:	nbrv_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of additional countries rights are distributed through Named Patient Usage Program.

+ References

No definition available.

+ Details

Name:	nbrv_NumberOfAdditionalCountriesRightsAreDistributedThroughNamedPatientUsageProgram
Namespace Prefix:	nbrv_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of countries, exclusive rights are distributed.

+ References

No definition available.

+ Details

Name:	nbrv_NumberOfCountriesExclusiveRightsAreDistributed
Namespace Prefix:	nbrv_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Price of a single share and warrant of saleable stocks of a company.

+ References

No definition available.

+ Details

Name:	nbrv_ShareAndWarrantPrice
Namespace Prefix:	nbrv_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The value of shares available for sale remains unsold.

+ References

No definition available.

+ Details

Name:	nbrv_SharesAvailableForSaleValueRemainsUnsold
Namespace Prefix:	nbrv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of commitment shares issued during the period.

+ References

No definition available.

+ Details

Name:	nbrv_SharesIssuedDuringPeriodNewIssuesCommitmentShares
Namespace Prefix:	nbrv_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Threshold limit of commitment under single regular share purchase.

+ References

No definition available.

+ Details

Name:	nbrv_ThresholdLimitOfCommitmentSingleRegularSharePurchase
Namespace Prefix:	nbrv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3521-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3044-108585

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=126999549&loc=SL98516268-108586

+ Details

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

- 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 https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

+ Details

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

- Definition

The cash inflow from the additional capital contribution to the entity.

+ 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 https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

+ Details

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

- Definition

The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

+ References

+ Details

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

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

Name:	us-gaap_SharePrice
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Per share or per unit amount of equity securities issued.

+ References

No definition available.

+ Details

Name:	us-gaap_SharesIssuedPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=nbrv_PublicOfferingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=nbrv_PurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	srt_CounterpartyNameAxis=nbrv_LincolnParkCapitalFundLlcMember
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_StatementClassOfStockAxis=nbrv_OrdinaryStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=nbrv_SharePriceNotBelow0.25PerShareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=nbrv_SharePriceNotBelow2.00PerShareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=nbrv_SharePriceNotBelow3.00PerShareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Organization and Business Activities (Details)			1 Months Ended					12 Months Ended
Organization and Business Activities (Details)	Apr. 15, 2023 USD ($)	Jan. 02, 2023 USD ($)	Sep. 30, 2021 USD ($) $ / shares shares	May 31, 2021 USD ($)	Mar. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	May 31, 2020 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) $ / shares	Jul. 13, 2022 country	Dec. 31, 2019 USD ($)
Liquidity
Number of countries, exclusive rights are distributed. \| country											9
Number of additional countries rights are distributed \| country											5
Cash and cash equivalents and restricted cash						$ 41,590,000		$ 12,537,000	$ 47,834,000	$ 41,590,000		$ 86,411,000
Proceeds from at-the-market facility								3,460,000	42,280,000	7,520,000
Shares issued								5,584,000	$ 70,138,000	$ 61,060,000
Public offering
Liquidity
Number of shares issued \| shares						240,000
Shares Issued, Price Per Share \| $ / shares						$ 62.50				$ 62.50
Proceeds from at-the-market facility						$ 15,000,000.0
Net proceeds from sale of stock						$ 13,300,000
Purchase agreement
Liquidity
Number of shares issued \| shares							165,755
Proceeds from at-the-market facility							$ 38,000,000.0
Net proceeds from sale of stock							$ 35,200,000
Number of ordinary shares that can be purchased by warrant holders \| shares							165,755
Share and warrant price \| $ / shares							$ 229.21
Purchasers \| Purchase agreement
Liquidity
Number of shares issued \| shares					390,440
Net proceeds from sale of stock					$ 23,400,000
Proceeds from Issuance or Sale of Equity					$ 25,400,000
Number of ordinary shares that can be purchased by warrant holders \| shares					195,220
Term					5 years
Lincoln Park Capital Fund, LLC \| Purchase agreement
Liquidity
Net proceeds from sale of stock								$ 4,600,000
Lincoln Park Capital Fund, LLC \| Purchase agreement \| Maximum
Liquidity
Ordinary shares remained unsold		$ 18,500,000
Lincoln Park Capital Fund, LLC \| Purchase agreement \| Ordinary shares
Liquidity
Number of shares issued \| shares								320,000
Net proceeds from sale of stock								$ 4,600,000
Commitment shares \| shares			25,298
Commitment share price \| $ / shares			$ 0.01
Regular purchase			$ 2,500,000
Lincoln Park Capital Fund, LLC \| Purchase agreement \| Ordinary shares \| Minimum
Liquidity
Shares issued			200,000
Lincoln Park Capital Fund, LLC \| Purchase agreement \| Ordinary shares \| Maximum
Liquidity
Shares issued			$ 23,000,000.0
Lincoln Park Capital Fund, LLC \| Purchase agreement \| Ordinary shares \| Share Price Not Below $0.25 Per Share
Liquidity
Share price \| $ / shares			$ 0.25
Lincoln Park Capital Fund, LLC \| Purchase agreement \| Ordinary shares \| Share Price Not Below $0.25 Per Share \| Maximum
Liquidity
Number of shares issued \| shares			16,000
Lincoln Park Capital Fund, LLC \| Purchase agreement \| Ordinary shares \| Share Price Not Below $2.00 Per Share
Liquidity
Share price \| $ / shares			$ 50.00
Lincoln Park Capital Fund, LLC \| Purchase agreement \| Ordinary shares \| Share Price Not Below $2.00 Per Share \| Maximum
Liquidity
Number of shares issued \| shares			24,000
Lincoln Park Capital Fund, LLC \| Purchase agreement \| Ordinary shares \| Share Price Not Below $3.00 Per Share
Liquidity
Share price \| $ / shares			$ 75.00
Lincoln Park Capital Fund, LLC \| Purchase agreement \| Ordinary shares \| Share Price Not Below $3.00 Per Share \| Maximum
Liquidity
Number of shares issued \| shares			32,000
Ordinary Share Warrants \| Purchasers \| Purchase agreement
Liquidity
Number of ordinary shares that can be purchased by warrant holders \| shares					24,000
Share and warrant price \| $ / shares					$ 61.31
Exercise price \| $ / shares					$ 59.75
Pre-Funded Warrants \| Purchasers \| Purchase agreement
Liquidity
Number of ordinary shares that can be purchased by warrant holders \| shares					12,000
Share and warrant price \| $ / shares					$ 61.06
Exercise price \| $ / shares					$ 0.01
Open Market Sale Agreement \| Jefferies LLC \| Ordinary shares
Liquidity
Number of shares issued \| shares								1,429,729
Proceeds from at-the-market facility								$ 32,500,000
Aggregate gross sale proceeds for ordinary shares								$ 33,900,000
Open Market Sale Agreement \| Jefferies LLC \| Ordinary shares \| Maximum
Liquidity
Aggregate gross sale proceeds for ordinary shares				$ 50,000,000.0
Subsequent Event \| Lincoln Park Capital Fund, LLC \| Purchase agreement \| Maximum
Liquidity
Ordinary shares remained unsold	$ 18,500,000