Entity Central Index Key Cover [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity File Number Entity File Number Entity Address, Address Line One Entity Address Address Line1 Entity Address Address Line2 Entity Address Address Line2 Entity Address, City or Town Entity Address City Or Town Entity Address, Country Entity Address Country Entity Address, Postal Zip Code Entity Address Postal Zip Code Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Prepayments for equipment. Land use right noncurrent. Statement Of Financial Position [Abstract] Assets Assets [Abstract] Current assets: Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Short-term investments Short Term Investments Accounts receivable Accounts Receivable Net Current Inventories Inventory Net Prepayments and other current assets Prepaid Expense And Other Assets Current Total current assets Assets Current Restricted cash, non-current Restricted Cash Noncurrent Investments in equity investees Long Term Investments Prepayments for equipment Prepayments For Equipment Property and equipment, net Property Plant And Equipment Net Operating lease right-of-use assets Operating Lease Right Of Use Asset Land use rights Land Use Right Noncurrent Intangible assets, net Intangible Assets Net Excluding Goodwill Long term deposits Deposits Assets Noncurrent Value added tax recoverable Value Added Tax Receivable Noncurrent Total assets Assets Liabilities and shareholders' equity Liabilities And Stockholders Equity [Abstract] Current liabilities: Liabilities Current [Abstract] Short-term borrowings Short Term Borrowings Accounts payable Accounts Payable Current Current operating lease liabilities Operating Lease Liability Current Other payables Other Liabilities Current Total current liabilities Liabilities Current Deferred income Contract With Customer Liability Non-current operating lease liabilities Operating Lease Liability Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 15) Commitments And Contingencies Shareholders' equity Stockholders Equity [Abstract] Ordinary shares (par value of US$0.00006 per share; 83,333,333 shares authorized, 58,006,967 and 67,753,168 shares issued and outstanding as of December 31,2018 and September 30, 2019, respectively) Common Stock Value Additional paid-in capital Additional Paid In Capital Common Stock Accumulated deficit Retained Earnings Accumulated Deficit Accumulated other comprehensive income Accumulated Other Comprehensive Income Loss Net Of Tax Total shareholders' equity Stockholders Equity Total liabilities and shareholders' equity Liabilities And Stockholders Equity Ordinary shares, par value Common Stock Par Or Stated Value Per Share Ordinary shares, shares authorized Common Stock Shares Authorized Ordinary shares, shares issued Common Stock Shares Issued Ordinary shares, shares outstanding Common Stock Shares Outstanding Income Statement [Abstract] Revenue Revenue From Contract With Customer Excluding Assessed Tax Cost of sales Cost Of Revenue Gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] Research and development Research And Development Expense Selling, general and administrative Selling General And Administrative Expense Loss from operations Operating Income Loss Interest income, net Interest Income Expense Nonoperating Net Other expense, net Other Nonoperating Income Expense Loss before income tax and share of loss from equity method investment Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Income tax expense Income Tax Expense Benefit Share of loss from equity method investment Income Loss From Equity Method Investments Net loss Net Income Loss Net loss attributable to ordinary shareholders Net Income Loss Available To Common Stockholders Basic Loss per share - basic and diluted Earnings Per Share Basic And Diluted Weighted-average shares used in calculating net loss per ordinary share - basic and diluted Weighted Average Number Of Share Outstanding Basic And Diluted Statement Of Income And Comprehensive Income [Abstract] Net loss Other comprehensive income, net of tax of nil: Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract] Foreign currency translation adjustments Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Comprehensive loss Comprehensive Income Net Of Tax Other comprehensive income, tax Other Comprehensive Income Loss Tax Statement Of Stockholders Equity [Abstract] Statement [Table] Statement [Table] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Ordinary Shares Common Stock [Member] Additional Paid In Capital Additional Paid In Capital [Member] Subscription Receivable Receivables From Stockholder [Member] Accumulated Deficit Retained Earnings [Member] Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income [Member] Statement [Line Items] Statement [Line Items] Balance Balance, Shares Issuance of ordinary shares upon vesting of restricted shares Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures Issuance of ordinary shares upon vesting of restricted shares, Shares Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures Exercise of shares option Stock Issued During Period Value Stock Options Exercised Exercise of shares option, Shares Stock Issued During Period Shares Stock Options Exercised Issuance of ordinary shares upon follow-on public offering, net of issuance cost Stock Issued During Period Value New Issues Issuance of ordinary shares upon follow-on public offering, net of issuance cost, Shares Stock Issued During Period Shares New Issues Share-based compensation Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Balance Balance, Shares Share issuance cost. Share issuance cost upon follow-on public offering Share Issuance Cost Amortization of deferred income. Payments to acquire land use right. Payables for initial public offering costs. Reconciliation to amounts on the condensed consolidated balance sheets. Statement Of Cash Flows [Abstract] Operating activities Net Cash Provided By Used In Operating Activities [Abstract] Adjustments to reconcile net loss to net cash provided by operating activities: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Depreciation and amortization expenses Depreciation Depletion And Amortization Amortization of deferred income Amortization Of Deferred Income Share-based compensation Share Based Compensation Share of loss from equity method investment Loss on disposal of property and equipment Gain Loss On Sale Of Property Plant Equipment Net changes in operating assets and liabilities Increase Decrease In Operating Capital Net cash used in operating activities Net Cash Provided By Used In Operating Activities Cash flows from investing activities: Net Cash Provided By Used In Investing Activities [Abstract] Purchases of short-term investments Payments To Acquire Short Term Investments Proceeds from maturity of short-term investments Proceeds From Sale Of Short Term Investments Purchase of equity method investment Payments To Acquire Equity Method Investments Purchase of property and equipment Payments To Acquire Property Plant And Equipment Purchase of land use right Payments To Acquire Land Use Right Purchase of intangible assets Payments To Acquire Intangible Assets Net cash used in investing activities Net Cash Provided By Used In Investing Activities Cash flows from financing activities: Net Cash Provided By Used In Financing Activities [Abstract] Proceeds from short-term borrowings Proceeds From Short Term Debt Repayment of short-term bank borrowings Repayments Of Short Term Debt Proceeds from exercises of stock options Proceeds From Stock Options Exercised Proceeds from issuance of ordinary shares upon public offerings Proceeds From Issuance Initial Public Offering Payment of public offering costs Payments Of Stock Issuance Costs Net cash provided by financing activities Net Cash Provided By Used In Financing Activities Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Net (decrease) increase in cash, cash equivalents and restricted cash Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Cash, cash equivalents and restricted cash - beginning of the period Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Cash, cash equivalents and restricted cash - end of the period Supplemental disclosure on non-cash investing and financing activities: Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] Payables for purchase of property and equipment Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 Payables for public offering costs Payables For Initial Public Offering Costs Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Interest expense paid Interest Paid Net Reconciliation to amounts on the condensed consolidated balance sheets: Reconciliation To Amounts On Condensed Consolidated Balance Sheets Organization Consolidation And Presentation Of Financial Statements [Abstract] Organization and Principal Activities Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Accounting Policies [Abstract] Summary of significant accounting policies Significant Accounting Policies [Text Block] Cash And Cash Equivalents [Abstract] Cash and Cash Equivalents Cash And Cash Equivalents Disclosure [Text Block] Restricted cash non-current. Restricted net assets . Restricted Net Assets [Abstract] Restricted cash, non-current Restricted Cash Non Current Disclosure [Text Block] Short-term investment. Short-term investment. Short Term Investment [Abstract] Short-term investments Short Term Investment [Text Block] Inventory Disclosure [Abstract] Inventories Inventory Disclosure [Text Block] Property Plant And Equipment [Abstract] Property and Equipment, net Property Plant And Equipment Disclosure [Text Block] Income Tax Disclosure [Abstract] Income tax Income Tax Disclosure [Text Block] Other Liabilities Current [Abstract] Short-term Borrowings Short Term Debt [Text Block] Other current liabilities disclosure. Other Payables Other Current Liabilities Disclosure [Text Block] Earnings Per Share [Abstract] Loss per share Earnings Per Share [Text Block] Related Party Transactions [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Share-based compensation Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Licenses and collaborative arrangement disclosure. Research And Development [Abstract] Licenses and collaborative arrangement Licenses And Collaborative Arrangement Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] Subsequent Events [Abstract] Subsequent events Subsequent Events [Text Block] Basis of presentation Basis Of Accounting Policy Policy [Text Block] Principles of consolidation Consolidation Policy [Text Block] Use of estimates Use Of Estimates Foreign currency translation Foreign Currency Transactions And Translations Policy [Text Block] Cash, cash equivalents and restricted cash Cash And Cash Equivalents Restricted Cash And Cash Equivalents Policy Short term investments policy. Short-term investments Short Term Investments Policy [Text Block] Accounts receivable Receivables Policy [Text Block] Inventories Inventory Policy [Text Block] Property and equipment Property Plant And Equipment Policy [Text Block] Lease Lessee Leases Policy [Text Block] Land use rights. Land use rights Land Use Rights Policy [Text Block] Fair value measurements Fair Value Measurement Policy Policy [Text Block] Revenue recognition Revenue Recognition Policy [Text Block] Research and development expenses Research And Development Expense Policy Stock-based compensation Compensation Related Costs Policy [Text Block] Concentration of risks Concentration Risk Credit Risk Recent accounting pronouncements New Accounting Pronouncements Policy Policy [Text Block] Schedule of Significant Operating Subsidiaries Schedule Of Subsidiary Of Limited Liability Company Or Limited Partnership Description [Text Block] Property and equipment estimated useful lives. Significant accounting policies. Significant accounting policies. Significant Accounting Policies [Table] Significant Accounting Policies [Table] Adjustments for New Accounting Pronouncements Adjustments For New Accounting Pronouncements [Axis] Type of Adoption Type Of Adoption [Member] ASU 2016-02 Accounting Standards Update201602 [Member] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Summary of Estimated Useful Lives of Property and Equipment Property And Equipment Estimated Useful Lives Table [Text Block] Schedule of Impact on Unaudited Condensed Consolidated Balance Sheet Upon Adoption of ASU 2016-02 Schedule Of New Accounting Pronouncements And Changes In Accounting Principles [Text Block] Suppliers Accounted for 10% or More of Research and Development Expenses Fair Value Concentration Of Risk [Text Block] Summary of Cash and Cash Equivalents Schedule Of Cash And Cash Equivalents Table [Text Block] Schedule of Property and Equipment Property Plant And Equipment [Text Block] Schedule of Other Payables Other Current Liabilities Table [Text Block] Summary of Basic and Diluted Net Loss Per Share Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Summary of Anti-Dilutive Shares Excluded from Calculation of Diluted Loss Per Share Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block] Schedule of major related party and relationship. Schedule of Major Related Party and Relationship Schedule Of Major Related Party And Relationship Table [Text Block] Allocation of Compensation Expense Related to Option Schedule Of Compensation Cost For Share Based Payment Arrangements Allocation Of Share Based Compensation Costs By Plan Table [Text Block] Allocation of Compensation Expense Related to Restricted Shares Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Text Block] Schedule Of Subsidiary Of Limited Liability Company Or Limited Partnership [Table] Schedule Of Subsidiary Of Limited Liability Company Or Limited Partnership [Table] Ownership Ownership [Axis] Ownership Ownership [Domain] Zai Lab (Hong Kong) Limited. Zai Lab (Hong Kong) Limited Zai Lab Hong Kong Limited [Member] Zai Lab (Shanghai) company limited. Zai Lab (Shanghai) Co., Ltd Zai Lab Shanghai Company Limited [Member] Zai Lab (AUST) Pty., Ltd. Zai Lab (AUST) Pty., Ltd Zai Lab A U S T Pty Ltd [Member] Zai Lab (Suzhou) company limited. Zai Lab (Suzhou) Co., Ltd Zai Lab Suzhou Company Limited [Member] Zai Biopharmaceutical (Suzhou) company limited. Zai Biopharmaceutical (Suzhou) Co., Ltd Zai Biopharmaceutical Suzhou Company Limited [Member] Zai Lab (US) LLC. Zai Lab (US) LLC Zai Lab U S L L C [Member] Subsidiary Of Limited Liability Company Or Limited Partnership [Line Items] Subsidiary Of Limited Liability Company Or Limited Partnership [Line Items] Place of incorporation Subsidiary Of Limited Liability Company Or Limited Partnership State Date of incorporation Subsidiary Of Limited Liability Company Or Limited Partnership Date Percentage of ownership Subsidiary Of Limited Liability Company Or Limited Partnership Ownership Interest Principal activities Subsidiary Of Limited Liability Company Or Limited Partnership Business Purpose Concentration Risk Type Concentration Risk By Type [Axis] Concentration Risk Type Concentration Risk Type [Domain] foreign currency risk. Foreign Currency Risk Foreign Currency Risk [Member] Concentration Risk Benchmark Concentration Risk By Benchmark [Axis] Concentration Risk Benchmark Concentration Risk Benchmark [Domain] Cash and cash equivalent. Cash and Cash Equivalents Cash And Cash Equivalent [Member] Allowance for Doubtful Accounts Receivable Allowance For Doubtful Accounts Receivable Inventory provision Inventory Write Down Schedule Of Property Plant And Equipment [Table] Schedule Of Property Plant And Equipment [Table] Property, Plant and Equipment, Type Property Plant And Equipment By Type [Axis] Property, Plant and Equipment, Type Property Plant And Equipment Type [Domain] Office Equipment Office Equipment [Member] Electronic equipment. Electronic Equipment Electronic Equipment [Member] Vehicle Vehicles [Member] Laboratory equipment. Laboratory Equipment Laboratory Equipment [Member] Manufacturing Equipment Manufacturing Facility [Member] Leasehold Improvements Leasehold Improvements [Member] Property Plant And Equipment [Line Items] Property Plant And Equipment [Line Items] Estimated useful lives of property and equipment Property Plant And Equipment Useful Life Estimated useful lives of property and equipment Property Plant And Equipment Estimated Useful Lives Operating leases, ROU assets Operating lease liabilities Operating Lease Liability Reclassified prepaid rent to operating ROU assets Right Of Use Asset Obtained In Exchange For Operating Lease Liability New Accounting Pronouncements Or Change In Accounting Principle [Table] New Accounting Pronouncements Or Change In Accounting Principle [Table] Effect of the option of ASU 2016-02 Effect of the option of ASU 2016-02 New Accounting Pronouncements Or Change In Accounting Principle [Line Items] New Accounting Pronouncements Or Change In Accounting Principle [Line Items] Assets: Prepayments and other current assets Operating lease right-of-use assets Liabilities: Liabilities [Abstract] Current operating lease liabilities Non-current operating lease liabilities Total lease cost Operating Lease Expense Land use rights term. Land use rights term Land Use Rights Term Research and development expenses. Research and Development Expenses Research And Development Expenses [Member] Concentration of Suppliers Supplier Concentration Risk [Member] Customer Major Customers [Axis] Customer Name Of Major Customer [Domain] Supplier A. A Supplier A [Member] Supplier B. B Supplier B [Member] Supplier C. C Supplier C [Member] Supplier D. D Supplier D [Member] Research and development expenses Concentration risk percentage Concentration Risk Percentage1 Percentage of foreign currency risk. Aggregate amount of cash and cash equivalents Percentage of foreign currency risk Percentage Of Foreign Currency Risk Schedule Of Cash And Cash Equivalents [Table] Schedule Of Cash And Cash Equivalents [Table] Currency Currency [Axis] All Currencies All Currencies [Domain] Denominated in US$ U S D Denominated in RMB C N Y Denominated in Hong Kong dollar H K D Denominated in Australia dollar A U D Cash And Cash Equivalents [Line Items] Cash And Cash Equivalents [Line Items] Cash at bank and in hand Cash And Due From Banks Cash equivalents Cash Equivalents At Carrying Value Cash and cash equivalents Restricted Cash [Abstract] Debt Securities Available For Sale [Table] Debt Securities Available For Sale [Table] Statistical Measurement Range [Axis] Statistical Measurement Range [Member] Minimum Minimum [Member] Maximum Maximum [Member] Schedule Of Available For Sale Securities [Line Items] Schedule Of Available For Sale Securities [Line Items] Maturities of Time Deposits, Description Maturities Of Time Deposits Description Time deposits, Maturity period Maturity Of Time Deposits Time deposits, Interest income Interest Income Deposits With Financial Institutions Inventory Current [Table] Inventory Current [Table] Geographical Statement Geographical [Axis] Geographical Segment Geographical [Domain] HK HONG KONG Macau MISSOURI Research and Development Arrangement, Contract to Perform for Others, Type Research And Development Arrangement Contract To Perform For Others By Type [Axis] Research and Development Arrangement, Contract to Perform for Others, Type Research And Development Arrangement Contract To Perform For Others Type [Domain] Tesaro. Tesaro Tesaro [Member] Novocure limited. Novocure Novocure Limited [Member] Inventory [Line Items] Inventory [Line Items] Inventory, Finished Goods, Gross Inventory Finished Goods Manufacturing equipment. Manufacturing Equipment Manufacturing Equipment [Member] Construction in Progress Construction In Progress [Member] Property and equipment, gross Property Plant And Equipment Gross Less: accumulated depreciation Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Property and equipment, net Depreciation expenses Depreciation Unrecognized tax benefits and related interest and penalties Unrecognized Tax Benefits Income Tax Penalties And Interest Expense Line of credit facility maturity period. Short Term Borrowings [Abstract] Line Of Credit Facility [Table] Line Of Credit Facility [Table] Legal Entity Legal Entity [Axis] Entity Entity [Domain] Line Of Credit Facility [Line Items] Line Of Credit Facility [Line Items] Facility agreement expiration period Line Of Credit Facility Expiration Period Facility agreement amount Line Of Credit Facility Maximum Borrowing Capacity Facility agreement, Outstanding amount Line Of Credit Facility Fair Value Of Amount Outstanding Facility agreement, Period due Line Of Credit Facility Maturity Period Short-term borrowing, average interest rate Short Term Debt Weighted Average Interest Rate Over Time Payables for purchase of property and equipment current. Payables for purchase of intangible assets. Other payables current liabilities. Payroll Employee Related Liabilities Current Professional service fee Accrued Professional Fees Current Payables for purchase of property and equipment Payables For Purchase Of Property And Equipment Current Payables for purchase of intangible assets Payables For Purchase Of Intangibles Asstes Current Others Other Payables Current Liabilities Other payables, total Weighted average number of share outstanding basic and diluted. Numerator: Net Income Loss [Abstract] Denominator: Weighted Average Number Of Share Outstanding Basic And Diluted [Abstract] Weighted average number of ordinary shares-basic and diluted Net loss per share-basic and diluted Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Antidilutive Securities Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities, Name Antidilutive Securities Name [Domain] Stock Options Employee Stock Option [Member] Non-vested restricted shares. Non-Vested Restricted Shares Non Vested Restricted Shares [Member] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive shares excluded from calculation of diluted loss per share Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Schedule Of Related Party Transactions By Related Party [Table] Schedule Of Related Party Transactions By Related Party [Table] Related Party Related Party Transactions By Related Party [Axis] Related Party Related Party [Domain] MEDx (Suzhou) Translational Medicine Co., Ltd. (Formerly known as Qiagen (Suzhou) translational medicine Co., Ltd) Limited Liability Company [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Relationship with the Group Related Party Transaction Description Of Transaction Related Party Transaction Related Party Transaction [Axis] Related Party Transaction Related Party Transaction [Domain] Related party transaction, research and development expenses. Research and development Related Party Transaction Research And Development Expenses [Member] MEDx (Suzhou) Translational Medicine Co., Ltd. Transactions between its related party Related Party Transaction Expenses From Transactions With Related Party Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Title of Individual Title Of Individual [Axis] Title of Individual Title Of Individual With Relationship To Entity [Domain] Management and employees. Management and Employees Management And Employees [Member] Plan Name Plan Name [Axis] Plan Name Plan Name [Domain] Two thousand seventeen equity incentive plan. Two Thousand Seventeen Equity Incentive Plan Two Thousand Seventeen Equity Incentive Plan [Member] Vesting Vesting [Axis] Vesting Vesting [Domain] Vesting anniversary year after the grant date Share Based Compensation Award Tranche Two [Member] Management, employees and consultants. Management, Employees and Consultants Management Employees And Consultants [Member] Award Type Award Type [Axis] Award Type Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Shares authorized Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized Options granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Exercise price of options Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price Options granted contractual term Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period Vesting period Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 Option vesting percentage Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage Weighted-average grant-date fair value of options granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value Compensation expense Allocated Share Based Compensation Expense Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table] Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table] Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] Selling, General and Administrative Expenses Selling General And Administrative Expenses [Member] Research and Development Research And Development Expense [Member] Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Unrecognized compensation expense related to unvested share options granted Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options Recognized over a weighted-average period Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 Independent directors. Independent Directors Independent Directors [Member] Each yearly anniversary from the date of the agreement Share Based Compensation Award Tranche Three [Member] Shares granted Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Granted Unrecognized share-based compensation Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options Weighted-average grant-date fair value of shares granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value License agreement date and year. Schedule Of Collaborative Arrangements And Noncollaborative Arrangement Transactions [Table] Schedule Of Collaborative Arrangements And Noncollaborative Arrangement Transactions [Table] Paratek Bermuda Limited. Paratek Paratek Bermuda Limited [Member] Five Prime Therapeutics Incorporation. Five Prime Five Prime Therapeutics Incorporation [Member] Entasis Therapeutics Holdings Inc. Entasis Entasis Therapeutics Holdings Incorporation [Member] Subsequent Event Type Subsequent Event Type [Axis] Subsequent Event Type Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Crescendo biologics ltd. Crescendo Crescendo Biologics Ltd [Member] Macro Genics Inc.. MacroGenics Macro Genics Inc [Member] Deciphera. Deciphera Deciphera [Member] Incyte. Incyte Incyte [Member] Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] License agreement date License Agreement Date And Year Upfront payments for license agreement. License agreement expiration period. Upfront payments Upfront Payments For License Agreement License agreement, expiration period License Agreement Expiration Period License agreement date. License agreement date License Agreement Date Payment of upfront fees for license agreement. Payment of upfront fees Payment Of Upfront Fees For License Agreement Number of milestone payments. Number of milestone payments Number Of Milestone Payments Loss Contingencies [Table] Loss Contingencies [Table] Asset Class Fair Value By Asset Class [Axis] Asset Class Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] Property and Equipment Property Plant And Equipment [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Purchase obligation Purchase Obligation Subsequent Event [Table] Subsequent Event [Table] Certain management. Certain Management Certain Management [Member] Restricted Shares Restricted Stock [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Contractual term Vesting percentage