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Development Acquired In Process Research And Development Income from operations Operating Income (Loss) Current Fiscal Year End Date Current Fiscal Year End Date Shares, issues, reduction in capital at the beginning of period (in shares) Shares, issues, reduction in capital at the end of the period (in shares) Shares, Issues, Reduction In Capital Shares, Issues, Reduction In Capital Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Unrecorded Unconditional Purchase Obligation [Table] Unrecorded Unconditional Purchase Obligation [Table] KYPROLIS KYPROLIS [Member] KYPROLIS Issuance of shares reserved for share option exercises (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Net Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Net Purchase commitments Unrecorded Unconditional Purchase Obligation Change in Fair Value as of Vesting Date of 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retirement obligation Asset Retirement Obligations, Noncurrent Cash equivalents Fair Value, Net Asset (Liability) [Abstract] Accumulated Other Comprehensive Loss Comprehensive Income (Loss) Note [Text Block] Equity Components [Axis] Equity Components [Axis] Accounts receivable Increase (Decrease) in Accounts Receivable Cost of Sales - Product Cost Of Sales Product [Member] Cost Of Sales Product Related Party Related Party [Member] Product and Service [Domain] Product and Service [Domain] Royalty Payments Royalty Payments [Member] Royalty Payments Income taxes paid Income Tax Paid, after Refund Received Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Total Upfront And Milestone Payments Upfront And Milestone Payments Entity Interactive Data Current Entity Interactive Data Current Deferred tax liabilities Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Entity Small Business Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Termination Date Trading Arrangement Termination Date Other Commitments [Axis] Other Commitments [Axis] Amgen, Inc Amgen, Inc [Member] Amgen, Inc [Member] Property, Plant, and Equipment Property, Plant, and Equipment [Line Items] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other Other Liabilities, Current Prepaid supply cost Prepaid Supply Cost Prepaid Supply Cost Other non-current assets Total Other Assets, Noncurrent Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Commercial activities Accrued Expenses, Commercial Activities Accrued Expenses, Commercial Activities Document Type Document Type Interest accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Long Term Bank Loan Maturing November 2029 Long Term Bank Loan Maturing November 2029 [Member] Long Term Bank Loan Maturing November 2029 Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Accrued expenses and other payables Total Accrued Liabilities, Current Fair Value as of Grant Date Award Grant Date Fair Value Discrete income tax benefits Discrete Income Tax Expense Benefit Discrete Income Tax Expense Benefit Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Unrecorded Unconditional Purchase Obligation [Line Items] Unrecorded Unconditional Purchase Obligation [Line Items] Earnings per American Depositary Share (“ADS”) Earnings Per American Depository Share [Abstract] Earnings Per American Depository Share Proceeds from sale or maturity of investments Proceeds from Sale of Other Assets, Investing Activities Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Commitments and contingencies Commitments and Contingencies Gross carrying amount Intangible Asset, Finite-Lived, before Accumulated Amortization Schedule of Other Long-Term Liabilities Other Noncurrent Liabilities [Table Text Block] Property, plant and equipment, at cost Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Equity-method investments Income (Loss) from Equity Method Investments Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] China China - total revenue CHINA Counterparty Name [Axis] Counterparty Name [Axis] Liabilities and shareholders’ equity Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Inventories, net Total Inventory, Net Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Short Term Bank Loan Maturing November 2029 Short Term Bank Loan Maturing November 2029 [Member] Short Term Bank Loan Maturing November 2029 Fair Value Measurements Fair Value Disclosures [Text Block] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] Accretion of liability Accretion Of Liability Accretion Of Liability 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Market Price, Ordinary (in dollars per share) Share Price PEO Name PEO Name Geographical [Axis] Geographical [Axis] Leasehold improvement Leasehold Improvements [Member] Total Restricted Cash Property, Plant and Equipment, Type [Axis] Long-Lived Asset, Class [Axis] Total Equity Securities, FV-NI and without Readily Determinable Fair Value Short Term Bank Loan Maturing March 2027 Short Term Bank Loan Maturing March 2027 [Member] Short Term Bank Loan Maturing March 2027 Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Research and development cost share liability, current portion Financing Commitment, Carrying Value, Current Financing Commitment, Carrying Value, Current Schedule of Collaboration Agreements Collaboration Agreements [Table Text Block] Collaboration Agreements [Table Text Block] Interest expense Interest Expense, Debt Cash, cash equivalents, and restricted cash at beginning of period Cash, cash equivalents, and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Regulatory and commercial milestone payments Regulatory And Commercial Milestone Payments [Member] Regulatory And Commercial Milestone Payments Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Collaborative Arrangement and Arrangement Other than Collaborative Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Accounts payable Increase (Decrease) in Accounts Payable Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code B1 Revolving Loan Facility B1 Revolving Loan Facility [Member] B1 Revolving Loan Facility Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Inventories Inventories [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Short-term restricted cash Restricted Cash and Cash Equivalent, Current Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Revenue rebates and returns related Beginning balance Ending balance Revenue Recognition Reserve For Sales Returns, Rebates And Other Deductions Revenue Recognition Reserve For Sales Returns, Rebates And Other Deductions Debt Instrument [Axis] Debt Instrument [Axis] Share-based compensation expenses Share-Based Payment Arrangement, Noncash Expense 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Other revenue Other Revenue Other Revenue [Member] Other Revenue Schedule of Sale of Future Royalty Liability Schedule of Short-Term and Long-Term Debt Obligations Schedule of Debt [Table Text Block] Investments [Domain] Investment, Name [Domain] Schedule of Inventories, Net Schedule of Inventory, Current [Table Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic (in dollars per share) Earnings Per Share, Basic Accrued general and administrative expenses Accrued General And Administrative Expenses, Current Accrued General And Administrative Expenses, Current Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Individual income tax and other taxes Accrued Payroll Taxes, Current Long-term debt Long-Term Debt, Excluding Current Maturities Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Accumulated deficit Retained Earnings (Accumulated Deficit) Restructuring and Related Activities [Abstract] Product and Service [Axis] Product and Service [Axis] Equity securities with readily determinable fair values Equity Securities, FV-NI Long-term restricted cash Long-term restricted cash Restricted Cash, Noncurrent Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Ordinary Shares Issued Common Stock [Member] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Cover [Abstract] Cover [Abstract] Dr. Xiaodong Wang [Member] Dr. Xiaodong Wang Percentage of principal repaid Debt Instrument, Percentage Of Principal Amount Repaid Debt Instrument, Percentage Of Principal Amount Repaid Year Ending December 31, Intangible Asset, Finite-Lived, after Accumulated Amortization, Estimated Amortization Expense, Fiscal Year Maturity [Abstract] Interest expense, excluding amortization of debt issuance costs Interest Expense, Debt, Excluding Amortization Equity securities without readily determinable fair values Equity Securities Without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount, Net Equity Securities Without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount, Net Proceeds from issuance of debt Proceeds from Issuance of Other Long-Term Debt Loans Payable Loans Payable [Member] Maximum commitment Long-term Funding Commitment, Maximum Amount Long-term Funding Commitment, Maximum Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Collaborative, Licensing and Other Arrangements Collaborative Arrangement Disclosure [Text Block] Total liabilities and shareholders’ equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Other liabilities Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Plan Name [Axis] Plan Name [Axis] Related Party [Domain] Related and Nonrelated Parties [Domain] Tabular List, Table Tabular List [Table Text Block] Long-term restricted cash Restricted Cash and Cash Equivalent, Noncurrent Additional paid-in capital Additional Paid in Capital Finite-lived intangible assets: Intangible Asset, Finite-Lived, after Accumulated Amortization [Abstract] Total sale of future royalty liability Other Long-Term Debt Purchase of intangible assets Payments to Acquire Intangible Assets Other (expense) income, net Other Nonoperating Income (Expense) Debt Long-Term Debt [Text Block] Share Options Employee And Nonemployee Stock Option [Member] An arrangement whereby an employee or non-employee is entitled to receive in the future, subject to vesting and other restrictions, a number of shares in the entity at a specified price, as defined in the agreement. 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three 2026 (remainder of year) Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year Name Awards Close in Time to MNPI Disclosures, Individual Name Repayment of sale of future royalties liability Repayment Of Sale Of Future Royalty Liability Repayment Of Sale Of Future Royalty Liability Entity Address, Country Entity Address, Country Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Rebates, Returns and Other Deductions Rebates, Returns and Other Deductions [Member] Rebates, Returns and Other Deductions Other non-current assets (Note 5): Assets, Noncurrent [Abstract] Property and equipment Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization [Abstract] Schedule of Accrued Expenses and Other Payables Accrued Liabilities, Accounts Payable, Other, and Other Liabilities, Current [Table Text Block] Tabular disclosure of accrued liabilities, other accounts payable, and other liabilities, current. Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Diluted (in dollars per share) Diluted (in dollars per share) Earnings Per American Depository Share, Diluted Earnings Per American Depository Share, Diluted Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Adjustment to Compensation: Adjustment to Compensation [Axis] Accrued expenses and other payables Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Prepaid taxes Prepaid Taxes Schedule of Payments Due to Collaboration Partners Payments Due To Collaboration Partners [Table Text Block] Payments Due To Collaboration Partners Interest expense paid Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Remaining portion of development funding cap Other commitments Other Commitment Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Beginning balance Ending balance Accounts Receivable, Allowance For Chargebacks And Credit Loss Accounts Receivable, Allowance For Chargebacks And Credit Loss Total Assets, Fair Value Disclosure B Loan Facility B Loan Facility [Member] B Loan Facility External research and development activities related Accrued Liabilities, External Research And Development Carrying value as of the balance sheet date of the obligations incurred through that date related to external research and development activities related Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] BLINCYTO BLINCYTO [Member] BLINCYTO Additional Paid-In Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Less: Amortization of research and development cost share liability Amortization of Financing Commitment Amortization of Financing Commitment Repayment of short-term loans Repayment of short-term loans Repayments of Short-Term Debt Restricted Net Assets Restricted Assets Disclosure [Text Block] Name Trading Arrangement, Individual Name Minimum required statutory reserve of annual after-tax profit Restricted Net Assets, Minimum Required Statutory Reserve of Annual After-tax Profit, Percentage Minimum required statutory reserve of annual after-tax profit as a percentage. Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Ratio of ordinary shares to ADS Common Stock, Ordinary Shares To American Denominated Shares (ADS) Common Stock, Ordinary Shares To American Denominated Shares (ADS) Interest rate Debt Instrument, Interest Rate During Period Raw materials Inventory, Raw Materials, Net of Reserves Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current [Abstract] Company Selected Measure Amount Company Selected Measure Amount Land Located in Hopewell, NJ Hopewell Facility [Member] Hopewell Facility A Loan Facility A Loan Facility [Member] A Loan Facility Net unrealized gains (losses) on equity securities held at end of period Equity Securities, FV-NI, Unrealized Gain (Loss) Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Depreciation and amortization expense Depreciation, Depletion and Amortization Purchase Price, Ordinary (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued In Period Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Exercise Price Schedule Of Unrealized Losses That Relates To Equity Securities Gain (Loss) on Securities [Table Text Block] Entity number of employees (over) Entity Number of Employees Entity Address, Street Address Two Entity Address, Address Line Two Exercise of options, ESPP and release of RSUs (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Entity Address, Street Address Entity Address, Address Line One ROU assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Income tax expense Income Tax Expense (Benefit) Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Development milestones incurred Development Milestone Payments [Member] Development Milestone Payments Cost of sales - product Cost of Product and Service Sold Long Term Bank Loan Maturing June 2027 Long Term Bank Loan Maturing June 2027 [Member] Long Term Bank Loan Maturing June 2027 Award Timing Method Award Timing Method [Text Block] Consolidation Consolidation, Policy [Policy Text Block] Net increase in cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Net Income (Loss) Attributable to Parent [Abstract] Deferred tax assets, gross Deferred Tax Assets, Gross Movement in accumulated other comprehensive loss AOCI Attributable to Parent, Net of Tax [Roll Forward] Net income Net income Net income Net income Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Less: unamortized debt issuance costs Unamortized Debt Issuance Expense Long Term Bank Loan Maturing January 2029 Long Term Bank Loan Maturing January 2029 [Member] Long Term Bank Loan Maturing January 2029 Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Schedule of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Amortization of research and development cost share liability Amortization Of Research And Development Financing Liability Amortization Of Research And Development Financing Liability Interest income Investment Income, Interest Rest of world - total revenue All Other Countries Except China And United States Of America [Member] All Other Countries Except China and The United States of America [Member] 2016 Share Option and Incentive Plan Share Option And Incentive Plan 2016 [Member] The 2016 Share Option and Incentive Plan. Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Other Collaboration Other [Member] Collaboration Other Proceeds from short-term loans Proceeds from Short-Term Debt Revenues Other Revenue Revenues [Abstract] Gain on fair value adjustment Fair Value, Option, Changes in Fair Value, Gain (Loss) Long-term debt, term Long-Term Debt, Term Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]