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Face amount or stated value per share of common stock.

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

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Number, before forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

No definition available.

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Development cost sharing payment.

No definition available.

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The amount represents the additional milestone payments.

No definition available.

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Future contingent milestone payments to be made upon achievement.

No definition available.

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The amount represents milestone payments.

No definition available.

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Collaborative Arrangement, Rights and Obligations, Milestone Payments Accrued

No definition available.

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Payment of upfront fees for license agreement.

No definition available.

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Name:	srt_CounterpartyNameAxis=zlab_ParatekBermudaLimitedMember
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Name:	zlab_EventOfUpfrontPaymentAxis=zlab_UponApprovalByFdaOfANewDrugApplicationMember
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Name:	zlab_EventOfUpfrontPaymentAxis=zlab_SubmissionOfTheFirstRegulatoryApprovalApplicationForALicensedProductInAPeopleRepublicOfChinaMember
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Name:	srt_CounterpartyNameAxis=zlab_MiratiTherapeuticsIncMember
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