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License Agreements (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Jan. 31, 2025 | May 31, 2021
2020 Xencor Agreement |  |  |  |
Nature of Business |  |  |  |
Agreement transaction price | $ 0.0 | $ 0.0 |  |
2021 Xencor Agreement |  |  |  |
Nature of Business |  |  |  |
Reimbursable costs | 0.0 | 0.0 |  |
Regulatory milestone payments |  |  |  | $ 75.0
Sales milestone payments |  |  |  | $ 385.0
Viridian Agreement |  |  |  |
Nature of Business |  |  |  |
Reimbursable costs | 0.1 | 0.0 |  |
Development milestone expense payable |  |  | $ 21.0 |
Sales milestone payments |  |  | $ 21.0 |
Contract manufacturing organization costs recognized | $ 0.0 | $ 0.0 |  |

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

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- Definition The amount of transaction price receivable under the collaborative agreement. + References No definition available. + Details
Name: | zbio_CollaborativeArrangementTransactionPrice
Namespace Prefix: | zbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of total contract manufacturing organization ("CMO") costs incurred and recognized. + References No definition available. + Details
Name: | zbio_LicenseAndOptionAgreementsContractManufacturingOrganizationCosts
Namespace Prefix: | zbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount of development milestone payable in connection with the agreement during the period. + References No definition available. + Details
Name: | zbio_LicenseAndOptionAgreementsDevelopmentMilestonePayable
Namespace Prefix: | zbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of regulatory milestone payable in connection with the agreement during the period. + References No definition available. + Details
Name: | zbio_LicenseAndOptionAgreementsRegulatoryMilestonePayable
Namespace Prefix: | zbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of reimbursable expenses incurred pursuant to the agreement. + References No definition available. + Details
Name: | zbio_LicenseAndOptionAgreementsReimbursableExpenses
Namespace Prefix: | zbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of sales milestone payable in connection with the agreement during the period. + References No definition available. + Details
Name: | zbio_LicenseAndOptionAgreementsSalesMilestonePayable
Namespace Prefix: | zbio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_TypeOfArrangementAxis=zbio_XencorAgreement2020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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