XML 74 R63.htm IDEA: XBRL DOCUMENT
v3.23.1

Leases - Additional Information (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2019 | Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2020
Lessee Lease Description [Line Items] |  |  |  |
Impairment loss |  | $ 0 | $ 0 |
One time fees asset non-current | $ 10,000 |  |  |
Construction-in-Progress |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Construction-in-progress asset |  | 10,000 |  |
Pre-tax impairment loss on asset |  |  | $ (10,200) |
Manufacturing Agreement |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Lease agreement expiration | 5 years |  |  |
Supplemental Agreement |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Cost related to manufacturing suite and additional equipment |  |  |  | $ 200
Termination Agreement |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Remaining payable related to dedicated manufacturing suite |  | 2,000 |  |
Payable related to termination fees for other existing services |  | $ 1,800 |  |

X
- Definition Cost related to manufacturing suite and additional equipment. + References No definition available. + Details
Name: | bbio_CostRelatedToManufacturingSuiteAndAdditionalEquipment
Namespace Prefix: | bbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Lease agreement expiration. + References No definition available. + Details
Name: | bbio_LeaseAgreementExpiration
Namespace Prefix: | bbio_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition One time fees receivable noncurrent. + References No definition available. + Details
Name: | bbio_OneTimeFeesReceivableNoncurrent
Namespace Prefix: | bbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Payable related to manufacturing suite. + References No definition available. + Details
Name: | bbio_PayableRelatedToManufacturingSuite
Namespace Prefix: | bbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Payable termination fees for other existing services. + References No definition available. + Details
Name: | bbio_PayableTerminationFeesForOtherExistingServices
Namespace Prefix: | bbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Pre-tax impairment gain (loss) on asset. + References No definition available. + Details
Name: | bbio_PreTaxImpairmentGainLossOnAsset
Namespace Prefix: | bbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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 No definition available. + Details
Name: | us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of loss from impairment of right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 25 -Paragraph 6 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=123399704&loc=SL77918431-209957 + Details
Name: | us-gaap_OperatingLeaseImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -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 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
Name: | us-gaap_PropertyPlantAndEquipmentGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ConstructionInProgressMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=bbio_ManufacturingAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=bbio_SupplementalAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=bbio_TerminationAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |