Summary of significant accounting policies Significant Accounting Policies [Text Block] Statistical Measurement Statistical Measurement [Domain] Award Timing Predetermined Award Timing Predetermined [Flag] Entity File Number Entity File Number Additional Paid-In Capital Additional Paid-in Capital [Member] Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss, Noncurrent Tabular List, Table Tabular List [Table Text Block] Leases [Abstract] Leases [Abstract] Recently issued accounting standards New Accounting Pronouncements, Policy [Policy Text Block] Accounts payable Increase (Decrease) in Accounts Payable Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Outstanding, beginning balance (in shares) Outstanding, ending balance (in shares) Class of Warrant or Right, Outstanding Net loss per share − basic (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Subsidiary or Equity Method Investee, Sale of Stock, Type [Table] Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Issuances of common stock under 2020 ESPP (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Accrued expenses and other current liabilities: Accrued Liabilities and Other Liabilities [Abstract] Adjustment to Compensation, Amount Adjustment to Compensation Amount Marketable securities, current: Debt Securities, Available-for-sale, Current [Abstract] Debt Securities, Available-for-sale, Current Consolidation Consolidation, Policy [Policy Text Block] Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Stock Options Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Schedule Of Property Plant And Equipment [Table] Property, Plant and Equipment [Table] Nonrefundable upfront payment Non Refundable Upfront Payment Non refundable upfront payment. Antidilutive Securities Antidilutive Securities [Axis] Total stockholders’ equity Beginning balance Ending balance Equity, Attributable to Parent Schedule Of Available For Sale Securities [Table] Debt Securities, Available-for-Sale [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Total stock-based compensation expense Share-Based Payment Arrangement, Expense Summary of property and equipment Property, Plant and Equipment [Table Text Block] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Issuance of common stock, net (in shares) Stock Issued During Period, Shares, New Issues Current assets: Assets, Current [Abstract] Total liabilities and stockholders’ equity Liabilities and Equity Other (in shares) Adjustments To Additional Paid In Capital Other Shares Adjustments to additional paid in capital other shares. Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax, Noncurrent Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax, Noncurrent Recurring Fair Value, Recurring [Member] Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Cover [Abstract] Cover [Abstract] Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Maximum Maximum [Member] General and administrative General and Administrative Expense [Member] Accounting Policies [Abstract] Accounting Policies [Abstract] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Number of targeted protein degradation Number Of Targeted Protein Degradation Number of targeted protein degradation. Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Marketable securities, non-current: Debt Securities, Available-for-sale, Noncurrent [Abstract] Debt Securities, Available-for-sale, Noncurrent Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] U.S. government debt securities US Government Agencies Debt Securities [Member] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount At-The-Market At-The-Market [Member] At-The-Market Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Entity Shell Company Entity Shell Company Deferred revenue Increase (Decrease) in Deferred Revenue Merck, KGaA Agreement Merck, KGaA Agreement [Member] Merck, KGaA Agreement Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Marketable securities, non-current Fair Value Debt Securities, Available-for-Sale, Excluding Accrued Interest, Noncurrent Name Measure Name Schedule of stock-based compensation expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Operating lease liability, current Operating Lease, Liability, Current Document Fiscal Period Focus Document Fiscal Period Focus Research and development milestones Research And Development Milestones [Member] Research and development milestones. Award Timing Method Award Timing Method [Text Block] 2026 Roche Agreement 2026 Roche Agreement [Member] 2026 Roche Agreement Furniture and fixtures Furniture and Fixtures [Member] Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Award Type Award Type [Axis] Deferred revenue, net of current Contract with Customer, Liability, Noncurrent Total assets Assets Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Trading Symbol Trading Symbol Research expenses Research Expenses Research Expenses Issuance of common stock upon vesting of restricted stock units, net of shares repurchased for tax withholding (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Accrued expenses and other current liabilities Total accrued expenses and other current liabilities Accrued Liabilities and Other Liabilities Entity Address, City or Town Entity Address, City or Town Cash flows used in operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Adjustments or reconciling items Segment Reporting, Other Segment Item, Amount Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax, Noncurrent Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax, Noncurrent Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Restricted stock units Restricted Stock Units (RSUs) [Member] Income Statement Location Statement of Income Location, Balance [Domain] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] 2020 Stock Option and Incentive Plan Two Thousand And Twenty Stock Option And Incentive Plan [Member] 2020 stock option and incentive plan. Entity Emerging Growth Company Entity Emerging Growth Company Share-based compensation, number of common stock issuable per RSU vested (in shares) Share Based Compensation Arrangement By Share Based Payment Award Number Of Common Stock Issuable Per R S U Vested Share-based compensation arrangement by share-based payment award, number of common stock issuable per RSU vested. Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Schedule of financial information related to collaboration and license agreements Financial Information Related To Collaboration And License Agreements Table [Table Text Block] Financial information related to the collaboration and license agreements. Debt Securities, Available-for-Sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Option exercise fees Option Exercise Fee Option exercise fee. Less: restricted cash Restricted Cash and Cash Equivalent Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Common stock, shares outstanding Common Stock, Shares, Outstanding Warrants issued (in shares) Class Of Warrant Or Right, Issued, Shares Class Of Warrant Or Right, Issued, Shares Upfront consideration receivable Upfront Consideration Receivable Upfront Consideration Receivable Summary of marketable securities Marketable Securities [Table Text Block] Plan Name Plan Name [Axis] PEO PEO [Member] Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Issuance of common stock upon exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Accumulated Deficit Retained Earnings [Member] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Summary of accrued liabilities Schedule of Accrued Liabilities [Table Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Cash, cash equivalents and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Income tax provision (benefit) Income Tax Expense (Benefit) Purchases of marketable securities Payments to Acquire Marketable Securities Sale of Stock Sale of Stock [Domain] Preferred stock, shares issued Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Product and Service Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Transaction price from closing of the stock purchase agreement Transaction Price From Closing of the Stock Purchase Agreement Transaction Price From Closing of the Stock Purchase Agreement Property and equipment Property, Plant and Equipment, Gross Cash, cash equivalents and marketable securities Cash, Cash Equivalents, and Short-Term Investments Net loss Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Premium from issuance of common stock Premium From Issuance Of Common Stock Premium From Issuance Of Common Stock Reduction in carrying amount of right-of-use asset Operating Lease, Right-of-Use Asset, Periodic Reduction Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Proceeds from exercise of stock options Proceeds from Stock Options Exercised City Area Code City Area Code Options to purchase common stock Options To Purchase Common Stock [Member] Options to purchase common stock. Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Payment received Proceeds from Collaborators All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Discovery, Regulatory, and Commercial Milestones Discovery, Regulatory, and Commercial Milestones [Member] Discovery, Regulatory, and Commercial Milestones Shares outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Class of Warrant or Right [Line Items] Class of Warrant or Right [Line Items] Pre-Funded Warrants Pre-Funded Warrants [Member] Pre-Funded Warrants Betta Agreements Betta Agreement [Member] Betta Agreement Cash flows provided by (used in) investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash used in operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Number of performance obligations Number of Performance Obligations Number of Performance Obligations Marketable securities Fair Value Debt Securities, Available-for-Sale, Excluding Accrued Interest Preferred stock, par value per share (in dollars per share) Preferred Stock, Par or Stated Value Per Share Subsequent Event Subsequent Event [Member] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Depreciation expense Depreciation Money market funds Money Market Funds [Member] Amount eligible to receive Contracts Receivable, Claims and Uncertain Amounts Summary of allocation of transaction price Summary Of Allocation Of Total Transaction Price And Unsatisfied Transaction Price Table [Table Text Block] Summary of allocation of total transaction price and unsatisfied transaction price. Number of potential research and development targets Number Of Potential Research and Development Targets Number Of Potential Research and Development Targets Equity Components Equity Components [Axis] Exercised Warrant Or Right Class [Domain] Exercised Warrant Or Right Class [Domain] Exercised Warrant Or Right Class [Domain] Number of targets Number Of Targets Number of targets. Property Plant And Equipment [Line Items] Property, Plant and Equipment [Line Items] Biogen Agreement Biogen Agreement [Member] Biogen agreement. Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of reportable segments Number of Reportable Segments Addition to the transaction price Collaborative Arrangement, Addition To The Transaction Price Collaborative Arrangement, Addition To The Transaction Price Interest and other income, net Interest and Other Income Performance-Accelerated Restricted Stock Units Performance-Accelerated Restricted Stock Units [Member] Performance-Accelerated Restricted Stock Units Supplemental disclosures of cash flow information: Supplemental Cash Flow Information [Abstract] Other Performance Measure, Amount Other Performance Measure, Amount Entity Address, State or Province Entity Address, State or Province Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Class A Warrants Class A Warrants [Member] Class A Warrants Total current liabilities Liabilities, Current Individual: Individual [Axis] Revenue from Contract with Customer, Product and Service [Extensible Enumeration] Revenue from Contract with Customer, Product and Service [Extensible Enumeration] Research and development Research and Development Expense [Member] Additional paid-in capital Additional Paid in Capital, Common Stock Net cash provided by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation 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] One-time sales-based payments One Time Sales Based Payments [Member] One-time sales-based payments. Exercised Warrant Or Right Class [Axis] Exercised Warrant Or Right Class [Axis] Exercised Warrant Or Right Class Document Fiscal Year Focus Document Fiscal Year Focus Basis of presentation Basis of Accounting, Policy [Policy Text Block] Research and Development Arrangement, Contract to Perform for Others, Type Research and Development Arrangement, Contract to Perform for Others, Type [Axis] Right-of-use asset Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Accrued compensation and benefits Accrued Employee Benefits, Current Entity Interactive Data Current Entity Interactive Data Current Plan Name Plan Name [Domain] Expected to be recognized over a weighted average period Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Issuance of common stock upon exercise of stock options (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Equity [Abstract] Equity [Abstract] Segment reporting Segment Reporting Disclosure [Text Block] 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] U.S. Treasury securities US Treasury Securities [Member] Accrued research and development Accrued Research And Development Current Accrued research and development, current. Long-Lived Tangible Asset Long-Lived Tangible Asset [Axis] Class of Warrant or Right [Table] Class of Warrant or Right [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Share price, minimum threshold for consecutive trading days Share Price, Minimum Threshold For Consecutive Trading Days Share Price, Minimum Threshold For Consecutive Trading Days Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Stock repurchase program, number of shares authorized to be repurchased (in shares) Share Repurchase Program, Authorized, Number of Shares Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Depreciation and amortization expense Depreciation, Depletion and Amortization Other assets Other Assets, Noncurrent Entity Central Index Key Entity Central Index Key PEO Name PEO Name Consideration received on transaction Sale of Stock, Consideration Received on Transaction Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Computer equipment Computer Equipment [Member] Deferred revenue, current Contract with Customer, Liability, Current Segments [Axis] Segments [Axis] Exercise price of warrants or rights (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Prepaid expenses and other current and long-term assets Increase (Decrease) in Prepaid Expense and Other Assets Exercise Price Award Exercise Price Number of consecutive trading days prior to the date of notice of mandatory exercise Class Of Warrant Or Right, Number Of Consecutive Trading Days Prior To The Date Of Notice Of Mandatory Exercise Class Of Warrant Or Right, Number Of Consecutive Trading Days Prior To The Date Of Notice Of Mandatory Exercise Entity Filer Category Entity Filer Category Class of Stock [Domain] Class of Stock [Domain] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Collaborative Arrangement and Arrangement Other than Collaborative Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Share price (in dollars per share) Share Price Other Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Subsequent Event Type [Axis] Subsequent Event Type [Axis] Stock-based compensation Share-Based Payment Arrangement [Text Block] Upfront fees Upfront Fees Upfront fees. Assets Assets [Abstract] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss, Current Fair value measurements Fair Value Disclosures [Text Block] Stockholders’ equity: Equity, Attributable to Parent [Abstract] 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] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Research and development Research and Development Expense Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Accrued expenses and other current liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Number of shares retained to cover statutory minimum withholding taxes (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Warrants Warrants And Rights Outstanding [Text Block] Warrants And Rights Outstanding Operating lease liability, net of current Operating Lease, Liability, Noncurrent Research and development targets Research And Development Targets [Member] Research and development targets. Duration of trading day volume weighted average closing price Stock Repurchase Program, Duration of Trading Day Volume Weighted Average Closing Price Stock Repurchase Program, Duration of Trading Day Volume Weighted Average Closing Price Fair Value as of Grant Date Award Grant Date Fair Value Underwritten Offering Underwritten Offering [Member] Underwritten Offering Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Entity Registrant Name Entity Registrant Name Proceeds from exercise of warrants Proceeds from Warrant Exercises Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Unrecognized compensation costs Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Document Quarterly Report Document Quarterly Report Total cash equivalents and marketable securities Assets, Fair Value Disclosure Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Number of operating segments Number of Operating Segments Issuance of common stock upon exercise of warrants Stock Issued During Period, Value, Warrants Exercised Stock Issued During Period, Value, Warrants Exercised Net accretion of discounts on marketable securities Accretion (Amortization) of Discounts and Premiums, Investments Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax, Current Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax, Current Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Research, development and commercial milestone payments Research Development And Commercial Milestone Payments [Member] Research, development and commercial milestone payments. Collaborative Arrangement and Arrangement Other than Collaborative Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Restatement Determination Date: Restatement Determination Date [Axis] Issuance of common stock upon vesting of restricted stock units, net of shares repurchased for tax withholding Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Non-PEO NEO Non-PEO NEO [Member] Issuance of common stock under 2020 ESPP Stock Issued During Period, Value, Employee Stock Purchase Plan Other Proceeds from (Payment for) Other Financing Activity Sale of Stock Sale of Stock [Axis] Number of potential targets Number Of Potential Targets Number of potential targets. Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Name Trading Arrangement, Individual Name Award Type Award Type [Domain] Written notice period for termination of agreement Notice Period For Termination Of Agreement Notice period for termination of agreement. Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] MKDG Agreement MKDG Agreement [Member] MKDG Agreement Compensation Amount Outstanding Recovery Compensation Amount Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Revenue recognized that was included in the contract liability at the beginning of the period Contract with Customer, Liability, Revenue Recognized MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name Accrued expenses and other current liabilities Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Additional upfront consideration received Additional Upfront Consideration Additional upfront consideration. Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Financial Instruments Financial Instruments [Domain] Unrealized loss on marketable securities OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Class Of Warrant Or Right [Roll Forward] Class Of Warrant Or Right [Roll Forward] Class Of Warrant Or Right Segments [Domain] Segments [Domain] Income Statement Location Statement of Income Location, Balance [Axis] Marketable securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Number of securities called by warrants or rights (in shares) Class of Warrant or Right, Number of Securities Called by Warrants or Rights Minimum Minimum [Member] Estimated transaction price Collaborative Arrangement, Estimated Transaction Price Collaborative Arrangement, Estimated Transaction Price Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Research agreement, period Research And Development Agreement Period Research and development agreement period. Company Selected Measure Name Company Selected Measure Name U.S. government debt securities US Government Debt Securities [Member] Class B Warrants Class B Warrants [Member] Class B Warrants Preferred stock, par value of $0.0001 per share; 10,000,000 shares authorized, and no shares issued or outstanding as of March 31, 2026 and December 31, 2025, respectively Preferred Stock, Value, Issued Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Stock repurchase program, premium percentage Stock Repurchase Program, Premium Percentage Stock Repurchase Program, Premium Percentage Accounts payable Accounts Payable, Current Cash paid for leases Operating Lease, Payments Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Transaction Price Unsatisfied Transaction Price Unsatisfied To Performance Obligation Transaction price unsatisfied to performance obligation. All Executive Categories All Executive Categories [Member] Common stock, par value of $0.0001 per share; 300,000,000 shares authorized as of March 31, 2026, and December 31, 2025, respectively, and 104,036,350 and 96,914,418 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively Common Stock, Value, Issued Laboratory equipment Laboratory Equipment [Member] Laboratory equipment. Commitments and contingencies Commitments and Contingencies Disclosure [Text Block] Weighted-average number of shares used in computed net loss per share − diluted Weighted Average Number of Shares Outstanding, Diluted Commitments and contingencies (see Note 12) Commitments and Contingencies Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Entity Small Business Entity Small Business Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Marketable securities: Marketable Securities [Abstract] Total consideration received on transaction, potential expected Sale of Stock, Total Consideration Received On Transaction, Potential Expected Sale of Stock, Total Consideration Received On Transaction, Potential Expected Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Document Transition Report Document Transition Report Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Underlying Securities Award Underlying Securities Amount Equity Component Equity Component [Domain] Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Income taxes Income Tax Disclosure [Text Block] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Restated Roche Agreement Restated Roche Agreement [Member] Restated Roche agreement. Operating lease liability Increase (Decrease) in Operating Lease Liability Document Type Document Type Level 3 Fair Value, Inputs, Level 3 [Member] Schedule of revenue from collaboration agreements Revenue From Collaboration Agreements Table [Table Text Block] Revenue from collaboration agreements. Loss per share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Product and Service Product and Service [Axis] Office equipment Office Equipment [Member] Transaction price allocated to performance obligation Transaction Price Allocated Transaction Price Allocated To Performance Obligation Transaction price allocated to performance obligation. Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Revenue from collaboration agreements Revenue from Contract with Customer, Excluding Assessed Tax Upfront payment Upfront Payment Upfront payment. 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