Accounting Policies [Abstract] Accounting Policies [Abstract] Accounting Standards Update 2016-13 [Member] ASU 2016-13 Accounting Standards Update 2017-09 [Member] Stock Option Modification Accounting Standards Update 2018-13 [Member] ASU 2018-13 Accounts Payable, Current Accounts payable Accrued Bonuses, Current Accrued bonus Accrued clinical and non clinical costs current. Accrued Clinical and Non Clinical Costs Current Accrued clinical and nonclinical study costs Accrued contract manufacturing current. Accrued Contract Manufacturing Current Accrued contract manufacturing Accrued Liabilities and Other Liabilities Accrued expenses and other current liabilities Total accrued expenses and other current liabilities Accrued Payroll Taxes, Current Payroll and related liabilities Accrued Professional Fees, Current Accrued professional fees Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less: accumulated depreciation and amortization Acquired ordinary shares for exchange for promissory notes with aggregate principal amount. Acquired ordinary shares for exchange for promissory notes with aggregate principal amount Acquired ordinary shares for exchange for promissory notes with aggregate principal amount Additional Paid in Capital, Common Stock Additional paid-incapital Additional Paid-in Capital [Member] Additional Paid-in Capital Accounting Standards Update [Axis] Accounting Standards Update [Axis] APIC, Share-based Payment Arrangement, Increase for Cost Recognition Share-based compensation Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Agreement expiry description. Agreement Expiry Description Agreement expiry description Share-based Payment Arrangement, Expense Stock-based compensation expenses Total stock-based compensation expense Amended And Restated Two Thousand Twenty Equity Incentive Plan [Member] Amended And Restated Two Thousand Twenty Equity Incentive Plan [Member] 2020 Plan Amendment Flag Amendment Flag Amortization of Debt Issuance Costs and Discounts Amortization of term loan discount and issuance costs Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive securities excluded from computation of earnings per share Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Asset Impairment Charges Impairment charges Impairment charges recognized Assets Total assets Assets [Abstract] Assets Assets, Current Total current assets Assets, Current [Abstract] Current assets: Award Type [Axis] Award Type [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Balance Sheet Related Disclosures [Abstract] Balance Sheet Related Disclosures Basic And Diluted Earnings Per Share Pro Forma Basic And Diluted Earnings Per Share Pro Forma Pro forma net loss attributable to ordinary shareholders per share, basic and diluted (unaudited) Pro forma net loss per share, basic and diluted Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Basis of Presentation and Significant Accounting Policies [Text Block] Organization and summary of significant accounting policies CANADA Burlingame, California Cash and Cash Equivalents, at Carrying Value Cash Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Money market funds Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Net (decrease) increase in cash Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Supplemental disclosure of non-cash investing and financing activities Change in Accounting Principle, Accounting Standards Update, Adopted [true false] Change in Accounting Principle, Accounting Standards Update, Adopted [true false] Change in Accounting Principle, Accounting Standards Update, Adoption Date Change in Accounting Principle, Accounting Standards Update, Adoption Date Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false] Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false] Changes in fair value of compound derivative liability and warrants. Changes in Fair Value Of Compound Derivative Liability And Warrants Changes in fair value of compound derivative liability and warrants Class of Stock [Domain] Class of Stock [Domain] Class of Stock [Line Items] Class of Stock [Line Items] Class of Warrant or Right, Exercise Price of Warrants or Rights Warrant exercise price per share Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Warrants to purchase common stock Class of Warrant or Right, Number of Securities Called by Warrants or Rights Warrant exercise Warrants issued to purchase Clinical and manufacturing accruals. Clinical and Manufacturing Accruals [Policy Text Block] Clinical and Manufacturing Accruals Clinical and regulatory milestones payments. Clinical And Regulatory Milestones Payments Clinical and regulatory milestones payments Collaborative Arrangement Disclosure [Text Block] License Agreement Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] Commercial antibody agreement. Commercial Antibody Agreement [Member] Commercial Antibody Agreement Commercial license agreement. Commercial License Agreement [Member] Commercial License Agreement Commitments and Contingencies Commitments and contingencies Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments & Contingencies Commitments and Contingencies [Line Items] Commitments and Contingencies [Line Items] Commitments and Contingencies [Line Items] Commitments and Contingencies [Table] Commitments and Contingencies [Table] Commitments and Contingencies [Table] Common Stock, Capital Shares Reserved for Future Issuance Common stock reserved for future issuance Shares reserved for future issuance Common Stock Dividends, Shares Cumulative dividends, shares Common Stock [Member] Common Stock Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common stock, shares, issued Common Stock, Shares, Outstanding Common stock, shares outstanding Common stock subject to repurchase. Common Stock Subject To Repurchase [Member] Common Stock Subject to Repurchase Common Stock, Value, Issued Common stock, value Retirement Benefits [Abstract] Retirement Benefits [Abstract] Components of Deferred Tax Assets [Abstract] Deferred tax assets: Components of Deferred Tax Liabilities [Abstract] Deferred tax liabilities: Compound derivative liability. Compound Derivative Liability [Member] Compound Derivative Liability Comprehensive Income, Policy [Policy Text Block] Comprehensive Loss Computation of Earnings Per Share [Line Items] Computation of Earnings Per Share [Line Items] Computation of Earnings Per Share [Line Items] Computer Equipment [Member] Computer Equipment [Member] Computer hardware and software. Computer Hardware And Software [Member] Computer Hardware And Software Concentration Of Credit Risk And Other Risks And Uncertainties Policy [Text Block] Concentration Of Credit Risk And Other Risks And Uncertainties Policy [Text Block] Concentration of Credit Risk and Other Risks and Uncertainties Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Consolidation, Policy [Policy Text Block] Principles of Consolidation Construction in Progress [Member] Construction in Progress Contractual Obligation Contractual Obligation, Total Contractual Obligation, to be Paid, after Year Five Contractual Obligation, Thereafter Contractual Obligation, to be Paid, Year Four and Five Contractual Obligation, 2023 - 2024 Contractual Obligation, to be Paid, Year Two and Three Contractual Obligation, 2021 - 2022 Contractual Obligation, to be Paid, Remainder of Fiscal Year Contractual Obligation, 2020 Conversion of Stock, Amount Converted Conversion of convertible preferred stock into common stock upon closing of initial public offering Conversion of Stock, Description Contingent mandatory conversion Convertible Preferred Stock Issued And Outstanding. Convertible Preferred Stock Issued And Outstanding [Member] Convertible Preferred Stock Issued And Outstanding Convertible Preferred Stock [Member] Convertible Preferred Stock Convertible Preferred Stock, Shares Issued upon Conversion Convertible shares converted into common stock Convertible Preferred Stock Warrant Liability [Policy Text Block] Convertible Preferred Stock Warrant Liability [Policy Text Block] Convertible Preferred Stock Warrant Liability Convertible Preferred Stock Warrants Value Converted Into Common Stock. Convertible Preferred Stock Warrants Value Converted Into Common Stock Outstanding preferred stock warrant liability converted into common stock Cost of Sales [Member] Cost of Services for Related-party Revenue Cost of services for related party revenue. Cost of Services for Related Party Revenue [Policy Text Block] Cost of Services for Related-Party Revenue Costs and Expenses, Related Party Cost of services for related-party revenue Cover [Abstract] Cover [Abstract] Crystal Bioscience Inc. Crystal Bioscience Inc [Member] Crystal Bioscience Inc Cumulative Preferred Stock Dividend Convertible Shares Issued Upon Conversion. Cumulative Preferred Stock Dividend Convertible Shares Issued Upon Conversion Cumulative preferred stock dividend convertible shares issued upon conversion Current Federal Tax Expense (Benefit) Domestic (Ireland) Current Foreign Tax Expense (Benefit) Foreign/federal Current Income Tax Expense (Benefit) Total current Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Current Current State and Local Tax Expense (Benefit) State (U.S.) Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Text Block] Term Loan Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Basis Spread on Variable Rate Term loan, interest rate above prime rate Long-term Debt, Gross Term loan, principal amount Debt Instrument, Face Amount Note, principal amount Term loan, principal amount Debt Instrument, Fair Value Disclosure Estimated fair value Debt Instrument Interest Only Payment Terms Debt Instrument Interest Only Payment Terms Term loan interest-only payments, term Debt Instrument, Interest Rate During Period Term loan, interest rate Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument, Measurement Input Valuation assumptions rate Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Debt Instrument Prepayment Fee Percentage Of Principal Amount. Debt Instrument Prepayment Fee Percentage Of Principal Amount Prepayment fee percentage Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Unamortized issuance costs and debt discounts Less: unamortized issuance costs and debt discounts Debt Instrument Variable Rate Basis Debt Instrument Variable Rate Basis Percentage of prime rate Debt, Policy [Policy Text Block] Term Loan Deferred Federal Income Tax Expense (Benefit) Domestic (Ireland) Deferred Foreign Income Tax Expense (Benefit) Foreign/federal Deferred Income Tax Expense (Benefit) Total deferred Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Deferred Deferred Income Tax Liabilities Gross Deferred Income Tax Liabilities Gross Total gross DTL Deferred Offering Costs [Policy Text Block] Deferred Offering Costs [Policy Text Block] Deferred Offering Costs Deferred Rent Credit, Noncurrent Deferred rent Deferred State and Local Income Tax Expense (Benefit) State (U.S.) Deferred Tax Assets, Gross Total gross DTA Deferred Tax Assets, in Process Research and Development Research & other credits Deferred Tax Assets, Net Net deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Total deferred tax assets Deferred Tax Assets, Operating Loss Carryforwards Net operating loss carryforwards Deferred Tax Assets, Other Other Deferred Tax Assets, Valuation Allowance Less: Val. Allowance Deferred tax liabilities, property, plant and equipment. Deferred Tax Liabilities, Property, Plant and Equipment1 Fixed assets Defined Contribution Plan [Text Block] Defined Contribution Plan Deposit Liability, Current Early exercise liability Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization expense Depreciation, Depletion and Amortization Depreciation and amortization Derivative Liability Compound derivative liability Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Text Block] Share-Based Compensation Disclosure of need for additional capital policy [Text Block] Disclosure Of Need For Additional Capital Policy [Text Block] Need for Additional Capital Dividends Cumulative dividends Document Type Document Type Due from Related Parties Outstanding related-party receivables Due from Related Parties, Current Receivables due from related-party Earnings Per Share [Abstract] Earnings Per Share [Abstract] Earnings Per Share, Basic and Diluted Net loss per share attributable to common stockholders, basic and diluted Earnings Per Share, Policy [Policy Text Block] Net Loss Per Share Attributable to Common Stockholders Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Text Block] Net Loss Per Share Attributable To Common Stockholders Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Statutory federal income tax (as a percent) Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Amount Share-based compensation Employee-related Liabilities, Current Accrued compensation Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Unrecognized share-based compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Unrecognized share-based compensation expense, weighted-average period Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Liability related to these unvested options Entity Central Index Key Entity Central Index Key Entity [Domain] Entity [Domain] Entity Emerging Growth Company Entity Emerging Growth Company Entity Ex Transition Period Entity Ex Transition Period Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Entity Small Business Entity Small Business Equity [Abstract] Equity [Abstract] Equity Component [Domain] Equity Component [Domain] Equity, Fair Value Disclosure Equity value Estimated Fair Value Issuance Of Warrants. Estimated Fair Value Issuance Of Warrants Estimated fair value of warrants Exchange for promissory notes with aggregate principal amount. Exchange for promissory notes with aggregate principal amount Exchange for promissory notes with aggregate principal amount Exclusive equity agreement. Exclusive Equity Agreement [Member] Exclusive Equity Agreement Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis [Table] Fair Value, Assets and Liabilities Measured on Recurring Basis [Table] Fair Value, Assets and Liabilities Measured on Recurring Basis [Table] Fair Value, Assets, Level 1 to Level 2 Transfers, Amount Fair value assets transferred from level 1 to level 2 Fair Value, Assets, Level 2 to Level 1 Transfers, Amount Fair value assets transferred from level 2 to level 1 Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table] Asset Class [Domain] Asset Class [Domain] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Asset Class [Axis] Asset Class [Axis] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Liability Class [Axis] Liability Class [Axis] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] Fair Value of Financial Instruments Fair Value, Inputs, Level 1 [Member] Level 1 Fair Value, Inputs, Level 3 [Member] Level 3 Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount Fair value liabilities transferred from level 1 to level 2