XML 60 R38.htm IDEA: XBRL DOCUMENT
v3.23.2

Leases - Additional Information (Details) | Feb. 08, 2022 USD ($) renewalOption | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($)
--- | --- | --- | ---
Lessee, Lease, Description [Line Items] |  |  |
Restricted cash in connection with operating leases |  | $ 8,000,000.0 | $ 7,800,000
New campus lease lessee option term for construction of fifth building | 6 years |  |
New campus rent abatement period | 10 months |  |
New campus lease monthly base rent per square foot | $ 6 |  |
New campus lease annual rent escalation percentage | 3.00% |  |
New campus lease term | 13 years 7 months |  |
New campus lease number of renewal options | renewalOption | 2 |  |
New campus lease renewal term | 5 years |  |
Wells Fargo Bank, N.A. |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Restricted cash in connection with operating leases |  | $ 7,800,000 |

X
- Definition Annual Rent Escalation Percentage + References No definition available. + Details
Name: | nbix_AnnualRentEscalationPercentage
Namespace Prefix: | nbix_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Lessee Operating Lease Monthly Base Rent Per Square Foot + References No definition available. + Details
Name: | nbix_LesseeOperatingLeaseMonthlyBaseRentPerSquareFoot
Namespace Prefix: | nbix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Description of term of lessee's option for the construction of a fifth building under operating lease. + References No definition available. + Details
Name: | nbix_LesseeOperatingLeaseOptionTermToConstructFifthBuilding
Namespace Prefix: | nbix_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of renewal options under the terms of the lease. + References No definition available. + Details
Name: | nbix_NumberOfRenewalOptions
Namespace Prefix: | nbix_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Rent Abatement Period + References No definition available. + Details
Name: | nbix_RentAbatementPeriod
Namespace Prefix: | nbix_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- 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 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Term of lessee's operating lease renewal, 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 -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_LesseeOperatingLeaseRenewalTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Term of lessee's operating lease, 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 -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. 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://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-8 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-4 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 45 -Paragraph 5 -SubTopic 210 -Topic 954 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480632/954-210-45-5 + Details
Name: | us-gaap_RestrictedCashAndCashEquivalentsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=nbix_WellsFargoBankNAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |