Entity Address, City or Town Entity Address, City or Town Entity Ex Transition Period Entity Ex Transition Period Fair Value Disclosures [Abstract] Level 1 Fair Value, Inputs, Level 1 [Member] Schedule of Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Issuance of common stock Stock Issued During Period, Value, New Issues Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Expected dividend yield Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Temporary equity conversion to common stock shares. Temporary Equity Conversion To Common Stock Shares Conversion to common stock (in shares) Conversion to common stock (in shares) Fair Value Measurement Fair Value Measurement [Domain] Amendment Flag Amendment Flag Success Based Milestones Success Based Milestones [Member] Success based milestones. Subsequent Event Type [Domain] Operating lease right-of-use assets and lease liabilities increased Right-of-use assets Operating Lease, Right-of-Use Asset Document Quarterly Report Document Quarterly Report Mirati Therapeutics, Inc Mirati Therapeutics Inc [Member] Mirati Therapeutics, Inc. Cash and Cash Equivalents Cash and Cash Equivalents [Domain] Statement [Table] Statement [Table] Stock Option Equity Option [Member] Change in accounting principle, accounting standards update, immaterial effect Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false] Stock Issued During Period, Shares, Employee Stock Purchase Plans Issuance of common stock under the Employee Stock Purchase Plan (in shares) License Agreements [Line Items] License Agreements [Line Items] License agreements. Number of operating segment Number of Operating Segments Preferred Stock, Shares Outstanding, Beginning Balance Preferred Stock, Shares Outstanding, Ending Balance Preferred stock, shares, outstanding Preferred Stock, Shares Outstanding Number of shares available for future issuance Common Stock, Capital Shares Reserved for Future Issuance Weighted-Average Grant-Date Fair Value, Ending Balance Weighted-Average Grant-Date Fair Value, Beginning Balance Weighted-Average Grant-Date Fair Value, Ending Balance Weighted-Average Grant-Date Fair Value, Beginning Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Weighted-Average Grant-Date Fair Value, Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Options Cancelled Upon Option Exchange Share Based Compensation Arrangement By Share Based Payment Award Options Cancelled Upon Option Exchange Number of stock options, exchanged Description of the Business Nature of Operations [Text Block] Options, Forfeited and cancelled Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Total Cumulative Effect, Period of Adoption, Adjustment Cumulative Effect, Period of Adoption, Adjustment [Member] Stock Options Share-Based Payment Arrangement, Option [Member] Total liabilities and stockholders' equity Liabilities and Equity Plan Name Plan Name [Domain] Change in accounting principle, accounting standards update, adopted Change in Accounting Principle, Accounting Standards Update, Adopted [true false] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Income Statement [Abstract] Reverse stock split Stockholders' Equity, Reverse Stock Split 2020 Equity Incentive Plan Two Thousand Twenty Equity Incentive Plan [Member] Two thousand twenty equity incentive plan. Sale of Stock Sale of Stock [Domain] Total current liabilities Liabilities, Current Stock Issued During Period, Value, Employee Stock Purchase Plan Issuance of common stock under the Employee Stock Purchase Plan Fair Value Measurements Recurring Fair Value, Recurring [Member] Preferred stock, shares authorized Preferred Stock, Shares Authorized Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Cumulative Effect, Period of Adoption Cumulative Effect, Period of Adoption [Axis] Entity Small Business Entity Small Business Total cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Investments [Domain] Total current assets Assets, Current Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Weighted Average Number of Shares Outstanding, Basic, Total Weighted Average Number of Shares Outstanding, Basic Weighted-average shares outstanding, basic City Area Code City Area Code Aggregate Intrinsic Value, Options outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value License Agreements [Abstract] License agreements. License agreement cash payment related to acquired assets charge License Agreement Cash Payment Related To Acquired Assets Charge License agreement cash payment related to acquired assets charge. Transfer between level 1 to 3 Fair Value Assets Level1 To Level3 Transfers Amount Fair value, assets, level 1 to level 3 transfers, amount. Share-Based Payment Arrangement [Abstract] Description Of Business [Table] Description Of Business [Table] Description of the business. Total liabilities Liabilities Private Placement Private Placement [Member] Document Period End Date Document Period End Date Transfer between level 3 to 2 Fair Value Assets Level3 To Level2 Transfers Amount Fair value, assets, level 3 to level 2 transfers, amount. Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost Statistical Measurement Statistical Measurement [Axis] Interest Income, Other Other Total assets Assets ASU No. 2016-02 Accounting Standards Update 2016-02 [Member] Derivative Contract [Domain] Stock Issued During Period, Shares, Conversion of Convertible Securities Conversion to common stock (in shares) Earnings Per Share, Diluted, Total Earnings Per Share, Diluted Net loss per share, diluted Summary of Outstanding Shares of Potential Dilutive Securities Excluded from Computation of Diluted Net Loss per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Document Fiscal Period Focus Document Fiscal Period Focus License Agreements [Table] License Agreements [Table] License agreements. Conversion of Stock, Shares Converted Convertible preferred stock outstanding converted into shares of common stock Preferred stock, $0.0001 par value; 200,000,000 shares authorized; no shares issued and outstanding at September 30, 2022 and December 31, 2021 Preferred Stock, Value, Issued, Total Preferred Stock, Value, Issued, Beginning Balance Preferred Stock, Value, Issued, Ending Balance Preferred Stock, Value, Issued Certificates of deposit Certificates of Deposit [Member] APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Option Indexed to Issuer's Equity, Type [Axis] Counterparty Name [Domain] Operating Lease, Liability, Total Lease liabilities Operating Lease, Liability Present value of lease liabilities Net Cash Provided by (Used in) Financing Activities Net cash provided by (used in) financing activities Statement of Financial Position [Abstract] Entity File Number Securities Act File Number Statement of Cash Flows [Abstract] Options granted, maximum contractual term Deferred Compensation Arrangement with Individual, Maximum Contractual Term Statistical Measurement Statistical Measurement [Domain] Statement of Stockholders' Equity [Abstract] Sale of Stock Sale of Stock [Axis] Class of Stock Class of Stock [Domain] Fair Values Assets Level 2 To Level 1 Transfers Amount Fair Values Assets Level 2 To Level 1 Transfers Amount Transfer between level 2 to 1 Exchange Traded Options [Member] Subsequent Events [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Weighted Average Remaining Contractual Term (in years), Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Proceeds from stock option exercises Proceeds from Stock Options Exercised Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Proceeds from issuance of common stock Schedule of Property and Equipment, Net Property, Plant and Equipment [Table Text Block] Antidilutive Securities Antidilutive Securities [Axis] Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Unrealized Gains Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Subsequent Events [Text Block] Subsequent Event Weighted Average Number of Shares Outstanding, Diluted, Total Weighted Average Number of Shares Outstanding, Diluted Weighted-average shares outstanding, diluted Fair Value Disclosure Item Amounts [Default] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] [Default] Gain (Loss) on Disposition of Assets, Total Gain (Loss) on Disposition of Assets Loss on fixed asset disposals Loss on fixed asset disposals General and administrative General and Administrative Expense [Member] Common Stock, Shares Held in Employee Trust, Shares Current Fiscal Year End Date Current Fiscal Year End Date Investment Type [Axis] Adjustments to additional paid in capital stock issued issuance costs with initial public offering. Adjustments To Additional Paid In Capital Stock Issued Issuance Costs With Initial Public Offering Issuance costs associated with initial public offering Depreciation, Total Depreciation Depreciation Financial Instruments Financial Instruments [Domain] Restricted cash included in other assets Restricted Cash and Cash Equivalents, Total Restricted Cash and Cash Equivalents Other Assets, Noncurrent, Total Other assets Other Assets, Noncurrent Underwriting discounts and commissions and other offering expenses Underwriting Discounts Commissions And Other Offering Expenses Underwriting discounts, commissions and other offering expenses. Entity Address, Address Line One Entity Address, Address Line One Commercial Milestone Commercial Milestone [Member] Commercial milestone. Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] Basis of presentation and summary of significant accounting policies. Accrued Liabilities, Current [Abstract] Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Contingent Consideration Type Contingent Consideration Type [Domain] Computer Hardware and Software Computer Hardware And Software [Member] Computer hardware and software. Weighted Average Exercise Price, Forfeited and Cancelled Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Preferred Stock, Shares Issued, Total Preferred stock, shares, issued Preferred Stock, Shares Issued Other accruals Other Accrued Liabilities, Current Payments to Acquire Property, Plant, and Equipment, Total Acquisitions of property and equipment Payments to Acquire Property, Plant, and Equipment Change in accounting principle, accounting standards update, adoption date Change in Accounting Principle, Accounting Standards Update, Adoption Date Issuance of common stock (in shares) Shares of common stock issued Stock Issued During Period, Shares, New Issues Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Axis] Stock-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Summary of Future Minimum Lease Payments under Non-cancelable Operating Leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Loss from operations Operating Income (Loss) Loss from operations Additional Paid in Capital, Common Stock, Beginning Balance Additional Paid in Capital, Common Stock, Ending Balance Additional paid-in capital Additional Paid in Capital, Common Stock Beginning Balance Ending Balance Temporary Equity, Carrying Amount, Attributable to Parent Acquired in-process research and development Research and Development in Process Entity Filer Category Entity Filer Category Proceeds from Sale and Maturity of Marketable Securities Proceeds from Sale and Maturity of Marketable Securities, Total Maturities of investments Change in accounting principle, accounting standards update, early adoption Change in Accounting Principle, Accounting Standards Update, Early Adoption [true false] Option Indexed to Issuer's Equity, Type [Domain] Total operating expenses Operating Expenses Entity Current Reporting Status Entity Current Reporting Status Aggregate Intrinsic Value, Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Short-term investments Debt Securities, Available-for-sale, Current, Total Debt Securities, Available-for-Sale, Current Total stockholders' equity Beginning Balance Ending Balance Stockholders' Equity Attributable to Parent Long Term Investments [Member] Long Term Investments [Member] Long Term Investments AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Gain (Loss) Short-term Investments Short-Term Investments [Member] Entity Tax Identification Number Entity Tax Identification Number Income Statement Location Income Statement Location [Axis] Forfeited Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Common stock, $0.0001 par value; 1,000,000,000 shares authorized; 39,576,047 and 39,430,120 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively Common Stock, Value, Issued, Total Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Ending Balance Upfront payment value Common Stock, Value, Issued Retained Earnings (Accumulated Deficit), Total Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Ending Balance Accumulated deficit Accumulated deficit Retained Earnings (Accumulated Deficit) Adjustment to opening balance of accumulated deficit Cumulative Effect, Period of Adoption Cumulative Effect, Period of Adoption [Domain] Equity Components Equity Components [Axis] Accounting Standards Update Accounting Standards Update [Domain] ASU No. 2016-13 Accounting Standards Update 2016-13 [Member] Stock issued during period shares issuance cost of initial public offering. Stock Issued During Period Shares Issuance Cost Of Initial Public Offering Issuance costs associated with initial public offering (in shares) Accounts payable and accrued other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total Entity Emerging Growth Company Entity Emerging Growth Company Operating expenses: Operating Expenses [Abstract] Other income: Other Nonoperating Income (Expense) [Abstract] Expected term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Purchases of investments Payments to Acquire Investments Payments to Acquire Investments, Total Debt Securities Available For Sale [Table] Debt Securities, Available-for-Sale [Table] Expected volatility, maximum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum License agreement maximum milestone payment obligation to pay License Agreement Maximum Milestone Payment Obligation To Pay License agreement maximum milestone payment obligation to pay. Document Transition Report Document Transition Report Sale of Stock, Number of Shares Issued in Transaction Sale of Stock, Number of Shares Issued in Transaction Assets, Fair Value Disclosure, Total Assets, Fair Value Assets, Fair Value Disclosure Weighted-Average Grant-Date Fair Value, Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Total other income Nonoperating Income (Expense) Accrued Liabilities Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Sale of Stock, Price Per Share Sale of Stock, Price Per Share Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Weighted Average Exercise Price, Exercised Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated Other Comprehensive Income (Loss), Net of Tax Basis Of Presentation And Summary Of Significant Accounting Policies [Table] Basis Of Presentation And Summary Of Significant Accounting Policies [Table] Basis of presentation and summary of significant accounting policies. Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Net loss Net loss Net Income (Loss) Attributable to Parent Lease liabilities - short-term Lease liabilities included in other current liabilities Operating Lease, Liability, Current Schedule of Assets Measured at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Additional Paid-in Capital Additional Paid-in Capital [Member] Premium percentage Shares Issued Percentage Of Premium Shares issued percentage of premium. Restricted stock units Restricted Stock Units Restricted Stock Units. Net proceeds from IPO Proceeds From Issuance Initial Public Offering Net Of Issuance Cost Proceeds from issuance initial public offering, net of issuance cost. Entity Registrant Name Entity Registrant Name Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents, at Carrying Value, Total Cash and Cash Equivalents, at Carrying Value, Beginning Balance Cash and Cash Equivalents, at Carrying Value, Ending Balance Summary of Fair Value of Stock Options Estimated Using Black-Scholes Merton Option Pricing Model Assumptions Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Class of Stock Class of Stock [Axis] Stock-based compensation expense Share-based Payment Arrangement, Noncash Expense, Total Share-Based Payment Arrangement, Noncash Expense Property, Plant and Equipment, Net, Beginning Balance Property, Plant and Equipment, Net, Ending Balance Total property and equipment, net Property and equipment, net Property, Plant and Equipment, Net Award Type [Domain] Statement [Line Items] Statement [Line Items] Title of 12(b) Security Title of 12(b) Security Number of licensed products obliged to develop and commercialize Number Of Licensed Products Obliged To Develop And Commercialize Number of licensed products obliged to develop and commercialize. Common Stock Common Stock [Member] Sale of Stock, Consideration Received on Transaction Sale of Stock, Consideration Received on Transaction Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Transfer between level 3 to 1 Fair Value Assets Level3 To Level1 Transfers Amount Fair value, assets, level 3 to level 1 transfers, amount Equity Component Equity Component [Domain] Convertible Preferred Stock Convertible Preferred Stock [Member] Schedule of Cash, Cash Equivalents and Restricted Cash Schedule of Cash and Cash Equivalents [Table Text Block] Entity Address, State or Province Entity Address, State or Province Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net (decrease) increase in cash, cash equivalents and restricted cash Document Type Document Type U.S. agency bonds US Government Corporations and Agencies Securities [Member] Entity Shell Company Entity Shell Company Stock-based compensation expense Share-Based Payment Arrangement, Expense Security Exchange Name Security Exchange Name Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Gross proceeds from secondary public offering excluding underwriting discounts and commissions and other offering expenses Proceeds From Issuance Of Common Stock Gross Proceeds from issuance of common stock gross. 2022 Inducement Equity Incentive Plan Two Thousand Twenty Two Inducement Equity Incentive Plan [Member] Two Thousand Twenty Two Inducement Equity Incentive Plan [Member] Net cash used in operating activities Net Cash Provided by (Used in) Operating Activities Total unrecognized compensation expense related to outstanding unvested stock-based awards expected to be recognized over weighted-average remaining service period Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Weighted Average Remaining Contractual Term (in years), Options outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Fair Value By Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Deferred rent - short-term Accrued Rent, Current Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive (loss) income: Employee Stock Purchase Plan Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan. 2020 Plan and 2014 Plan Two Thousand Twenty Equity Incentive Plan And Two Thousand Fourteen Equity Incentive Plan [Member] Two thousand twenty equity incentive plan and two thousand fourteen equity incentive plan. Commitments and Contingencies Disclosure [Abstract] Voronoi Inc. Voronoi Inc [Member] Voronoi Inc. Restricted Stock Units Non-vested restricted stock units Restricted Stock Units (RSUs) [Member] Summary of Future Lease Payments of Operating Lease Liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Summary of Restricted Stock Unit Activity Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Summary of Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Recently Adopted Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] License Agreements License Agreements Disclosure [Text Block] License agreements disclosure. Common stock, shares, outstanding Beginning Balance (in shares) Ending Balance (in shares) Common Stock, Shares, Outstanding Accretion (Amortization) of Discounts and Premiums, Investments (Accretion of discount) amortization of premium on investments, net Option to Purchase Additional Shares Over-Allotment Option [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Estimated Fair Value Debt Securities, Available-for-Sale Debt Securities, Available-for-sale, Total Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Commitments and contingencies (Note 9) Commitments and Contingencies Common Stock, Shares, Issued, Total Upfront payment shares issued Common stock, shares, issued Common Stock, Shares, Issued Acquired In-Process Research and Development Expense Acquired In Process Research And Development Expense [Member] Acquired in-process research and development expense. U.S. Treasury Securities US Treasury Securities [Member] Minimum Minimum [Member] Risk-free interest rate, maximum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Weighted Average Exercise Price, Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Accounting Standards Update Accounting Standards Update [Axis] Total accrued liabilities Accrued liabilities Accrued Liabilities, Current Debt Instrument [Axis] Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Counterparty Name [Axis] Entity Address, Address Line Two Entity Address, Address Line Two Cash and Cash Equivalents Cash and Cash Equivalents [Axis] Accrued clinical and manufacturing costs Accrued Clinical And Manufacturing Costs Accrued clinical and manufacturing costs. Weighted-Average Grant-Date Fair Value, Forfeited Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Award Type [Axis] Subsequent Event [Member] Subsequent Event Total unrecognized compensation expense related to outstanding unvested stock-based awards Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Transfer between level 2 to 3 Fair Value Assets Level2 To Level3 Transfers Amount Fair Value, assets, level 2 to level 3 transfers, amount. License agreement shares issued value related to acquired assets charge License Agreement Shares Issued Value Related To Acquired Assets Charge License agreement shares issued value related to acquired assets charge. Stock Option, exercise Price, decrease Stock Option, Exercise Price, Decrease Temporary equity conversion to common stock value. Temporary Equity Conversion To Common Stock Value Conversion to common stock Conversion to common stock Entity Central Index Key Entity Central Index Key Accounting Policies [Abstract] Investments, Debt and Equity Securities [Abstract] Schedule Of Available For Sale Securities [Line Items] Debt Securities, Available-for-Sale [Line Items] Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance Less accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Schedule Of Property Plant And Equipment [Table] Property, Plant and Equipment [Table] Measurement Frequency Measurement Frequency [Axis] Equity Incentive Plans and Stock-Based Compensation Share-Based Payment Arrangement [Text Block] General and Administrative Expense, Total General and administrative General and Administrative Expense Organization, Consolidation and Presentation of Financial Statements [Abstract] Weighted Average Exercise Price, Options outstanding Beginning Balance Weighted Average Exercise Price, Options outstanding Ending Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Research and development Research and Development Expense [Member] Risk-free interest rate, minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Adjustments to reconcile net loss to net cash used in operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Accumulated Deficit Retained Earnings [Member] Money Market Funds Money Market Funds [Member] Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Options to Purchase Common Stock Options To Purchase Common Stock [Member] Options to purchase common stock. Total property and equipment, gross Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross, Total Property, Plant and Equipment, Gross, Beginning Balance Property, Plant and Equipment, Gross, Ending Balance Entity Interactive Data Current Entity Interactive Data Current Leasehold Improvements Leasehold Improvements [Member] Issuance costs associated with offering of common stock Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Beginning Balance (in shares) Ending Balance (in shares) Temporary Equity, Shares Outstanding Proceeds from issuance of common stock pursuant to initial public offering Proceeds from Issuance Initial Public Offering Local Phone Number Local Phone Number License agreement charge related to acquired assets License Agreement Charge Related To Acquired Assets License agreement charge related to acquired assets. Upfront cash payment Upfront Cash Payment Upfront cash payment. Option vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Options, Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Proceeds from issuance of common stock under the Employee Stock Purchase Plan Proceeds from Issuance of Preferred Stock and Preference Stock Initial Public Offering IPO [Member] Options, Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Number of shares granted Other Liabilities, Noncurrent, Total Other long-term liabilities Other Liabilities, Noncurrent Reverse stock split ratio Stockholders' Equity Note, Stock Split, Conversion Ratio License agreement, additional milestone payment License Agreement Additional Milestone Payment License agreement additional Milestone payment. Income Statement Location Income Statement Location [Domain] Property, Plant and Equipment [Abstract] Stock transfer restrictions period Stock Transfer Restrictions Period Stock transfer restrictions period. Shares Outstanding, end of period Shares Outstanding, beginning of period Shares Outstanding, end of period Shares Outstanding, beginning of period Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Increase (Decrease) in Prepaid Expense and Other Assets, Total Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Contingent Consideration by Type Contingent Consideration by Type [Axis] Options outstanding, Beginning Balance Options outstanding, Ending Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Stock price Price per share of common stock Share Price Lab Equipment Lab Equipment [Member] Lab equipment. Debt Instrument, Name [Domain] Document Fiscal Year Focus Document Fiscal Year Focus Earnings Per Share, Basic, Total Earnings Per Share, Basic Net loss per share, basic Assets Assets [Abstract] Expected volatility, minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Issue price per share Shares Issued, Price Per Share Interest income, net Interest Income (Expense), Nonoperating, Net Financial Instrument Financial Instrument [Axis] Long-Lived Tangible Asset Long-Lived Tangible Asset [Axis] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Liabilities and Stockholders' Equity Liabilities and Equity [Abstract] Antidilutive Securities, Name Antidilutive Securities, Name [Domain] Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Current assets: Assets, Current [Abstract] Public offering. Public Offering [Member] Public Offering Long-term investments Debt Securities, Available-for-Sale, Noncurrent Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Domain] Measurement Frequency Measurement Frequency [Domain] Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accrued compensation Accrued Salaries, Current Cover [Abstract] Measurement Basis Measurement Basis [Axis] At-The-Market Sales Agreement and Offering At-The-Market Sales Agreement and Offering [Member] At-The-Market Sales Agreement and Offering. Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Description Of Business [Line Items] Description Of Business [Line Items] Description of the Business. Current liabilities: Liabilities, Current [Abstract] Maximum Maximum [Member] Unrealized (loss) gain on investments Unrealized (loss) gain on investments OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Summary of Total Stock-based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Net Cash Provided by (Used in) Investing Activities Net cash provided by (used in) investing activities Net cash (used in) provided by investing activities Furniture and Fixtures Furniture and Fixtures [Member] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Options, Exercised Exercise of common stock options (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Level 3 Fair Value, Inputs, Level 3 [Member] Exercise of common stock options Stock Issued During Period, Value, Stock Options Exercised Number of period the agreement in effect Number Of Period Agreement In Effect Number of period the agreement in effect. Payments Of Stock Issuance Costs Associated With Financings Payments Of Stock Issuance Costs Associated With Financings Issuance costs associated with financings Issuance costs associated with financings Common stock, shares authorized Common Stock, Shares Authorized Trading Symbol Trading Symbol Development And Regulatory Milestone Development And Regulatory Milestone [Member] Development and regulatory milestone. Schedule of Cost, Gross Unrealized Holding Gains, Gross Unrealized Holding Losses and Fair Value of Available for Sale Investments Debt Securities, Available-for-Sale [Table Text Block] Subsequent Event Type [Axis] Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Accounts Payable, Current, Total Accounts payable Accounts Payable, Current Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Plan Name Plan Name [Axis] Long-Lived Tangible Asset Long-Lived Tangible Asset [Domain] Secondary Public Offering Secondary Public Offering [Member] Secondary public offering. Common stock, par value Common Stock, Par or Stated Value Per Share Issuance of common stock related to acquisition, shares Stock Issued During Period, Shares, Acquisitions Stock Issued During Period, Value, Conversion of Convertible Securities Conversion to common stock Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Issuance of common stock related to acquisition Stock Issued During Period, Value, Acquisitions Derivative Instrument [Axis] Property and Equipment, Net Property, Plant and Equipment Disclosure [Text Block] Research and development Research and Development Expense (Excluding Acquired in Process Cost) Weighted Average Exercise Price, Granted Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Fair Value Estimate of Fair Value Measurement [Member] Anti dilutive securities excluded from computation of net loss per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Fair values assets level1 to level2 transfers amount Fair values assets level1 to level2 transfers amount Transfer between level 1 to 2