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Capital Shares Reserved for Future Issuance, Employee Stock Purchase Plan Related Party Transactions [Abstract] Elanco Elanco [Member] Elanco Title of Individual [Domain] Title of Individual [Domain] Additional paid-in capital Additional Paid in Capital Forfeited (usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Subsequent Event Type [Axis] Subsequent Event Type [Axis] Credit Facility, Tranche One Credit Facility, Tranche One [Member] Credit Facility, Tranche One Other receivables Increase (Decrease) in Other Receivables Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Forfeited (usd per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Forfeited (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Upfront payment received Upfront Payment Upfront Payment Common stock issued for license agreement, share price (usd per share) Share Price Related Party [Axis] Related Party, Type [Axis] Outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Entity Registrant Name Entity Registrant Name Milestone payments to be achieved Revenue, Remaining Performance Obligation, Variable Consideration, Amount Revenue, Remaining Performance Obligation, Variable Consideration, Amount Unrealized gain (loss) on equity investments Unrealized gain (loss) on equity investments Equity Securities, FV-NI, Unrealized Gain (Loss) Document Period End Date Document Period End Date Draw on credit facility Proceeds from Lines of Credit (Less): Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Exercisable (usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Entity Central Index Key Entity Central Index Key Accretion of term loan-related costs Amortization of Debt Issuance Costs and Discounts Remeasurement of equity warrants Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Total stock-based compensation Share-Based Payment Arrangement, Expense Provision for income taxes Income Tax Expense (Benefit) Accrued payroll and benefits Employee-related Liabilities, Current Fair Value Measurements Fair Value Disclosures [Text Block] Number of operating segments Number of Operating Segments Cash equivalents: Cash and Cash Equivalents [Abstract] Issuance of common stock upon follow-on public offering, net of issuance costs of $5,246 Stock Issued During Period, Value, New Issues Equity [Abstract] Debt Securities, Available-for-Sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Revenue recognized Revenue from Contract with Customer, Excluding Assessed Tax Other receivables Other Receivables, Net, Current Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Amendment Flag Amendment Flag Beginning balance (shares) Ending balance (shares) Temporary Equity, Shares Outstanding Money market funds(1) Money Market Funds [Member] Amortized cost Cash and Cash Equivalents, at Carrying Value Estimated incremental borrowing rate Operating Lease, Weighted Average Discount Rate, Percent Interest expense paid in cash Interest Paid, Excluding Capitalized Interest, Operating Activities Deferred offering costs included within additional-paid in capital Deferred Offering Costs Incurred But Not Yet Paid, Included In Additional Paid In Capital Deferred Offering Costs Incurred But Not Yet Paid, Included In Additional Paid In Capital Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Common stock issued for license agreement (shares) Stock Issued During Period, Shares, Issued for Services Useful lives of assets Property, Plant and Equipment, Useful Life Term loan, net Long-Term Debt, Excluding Current Maturities Leasehold improvements Leasehold Improvements [Member] Weighted-average shares outstanding, diluted (shares) Weighted Average Number of Shares Outstanding, Diluted Cash and Cash Equivalents Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] Contractual milestone payment Collaborative Arrangement, Rights And Obligations, Contractual Milestone Payment Collaborative Arrangement, Rights And Obligations, Contractual Milestone Payment Operating expenses: Operating Expenses [Abstract] Debt securities, available for sale and cash and cash equivalents Debt Securities, Available-For-Sale And Cash And Cash Equivalents Debt Securities, Available-For-Sale And Cash And Cash Equivalents Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Additional Paid-In Capital Additional Paid-in Capital [Member] Total assets Assets Cover [Abstract] Recognition of stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Amortization of debt issuance costs Amortization of Debt Issuance Costs Other long-term liabilities Other Liabilities, Noncurrent Vested (usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Number of employment arrangements with executive officers Number Of Employment Arrangements With Executive Officers Number Of Employment Arrangements With Executive Officers Total future lease payments, undiscounted Lessee, Operating Lease, Liability, to be Paid Increments to draw on credit facility at company's election Line of Credit Facility, Draw Down Increments Line of Credit Facility, Draw Down Increments Prime Rate Prime Rate [Member] Net increase in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash Flows From Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Equity Component [Domain] Equity Component [Domain] Amortized cost Equity Securities, FV-NI, Cost Fair market value of common stock Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent Debt Instrument [Line Items] Debt Instrument [Line Items] Weighted-average shares outstanding, basic (shares) Weighted Average Number of Shares Outstanding, Basic Entity Current Reporting Status Entity Current Reporting Status Loss from operations before other income (expense) and income taxes Operating Income (Loss) Office equipment Office Equipment [Member] Revenues: Revenues [Abstract] Proceeds from exercise of equity awards Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Statement [Line Items] Statement [Line Items] Property and Equipment, Net Property, Plant and Equipment, Policy [Policy Text Block] Other comprehensive loss: Other Comprehensive Income (Loss), Net of Tax [Abstract] Equity warrants (for LianBio shares) Equity Warrants, Fair Value Disclosure Equity Warrants, Fair Value Disclosure Balances of Debt, Debt Issuance Costs, and Accumulated Accretion Schedule of Debt [Table Text Block] Chief Financial Officer Chief Financial Officer [Member]