Entity Central Index Key Lessee operating lease liability payments, net of reimbursements, remainder of fiscal year. Lessee operating lease liability payments, net of reimbursements, due next twelve months. Lessee operating lease liability payments, net of reimbursements, due year two. Lessee operating lease liability payments, net of reimbursements, due year three. Lessee operating lease liability payments, net of reimbursements, due year four. Lessee operating lease liability to be paid, net of repayments, after year four. Cover [Abstract] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Transition Report Document Transition Report Document Period End Date Document Period End Date Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation State Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address Address Line1 Entity Address, Address Line Two Entity Address Address Line2 Entity Address, City or Town Entity Address City Or Town Entity Address, State or Province Entity Address State Or Province Entity Address, Postal Zip Code Entity Address Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Security12b Title Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Bankruptcy Proceedings, Reporting Current Entity Bankruptcy Proceedings Reporting Current Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Central Index Key Amendment Flag Amendment Flag Statement Of Financial Position [Abstract] Assets Assets [Abstract] Current assets: Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Restricted cash Restricted Cash Current Marketable securities, current Marketable Securities Current Prepaid expenses and other current assets Prepaid Expense And Other Assets Current Total current assets Assets Current Property and equipment, net Property Plant And Equipment Net Marketable securities, noncurrent Marketable Securities Noncurrent Right-of-use assets, operating leases Operating Lease Right Of Use Asset Other assets Other Assets Noncurrent Total assets Assets Liabilities and Stockholders’ Equity Liabilities And Stockholders Equity [Abstract] Current liabilities: Liabilities Current [Abstract] Accounts payable Accounts Payable Current Accrued expenses Accrued Liabilities Current Operating lease liability, current Operating Lease Liability Current Total current liabilities Liabilities Current Operating lease liability, noncurrent Operating Lease Liability Noncurrent Total liabilities Liabilities Stockholders’ equity: Stockholders Equity [Abstract] Preferred stock, $0.00001 par value, 5,000,000 shares authorized at March 31, 2022 (unaudited) and December 31, 2021. No shares issued or outstanding at March 31, 2022 (unaudited) and December 31, 2021. Preferred Stock Value Common stock, $0.00001 par value, 1,000,000,000 shares authorized; 45,532,392 and 45,433,684 shares issued and outstanding at March 31, 2022 (unaudited) and December 31, 2021, respectively. Common Stock Value Additional paid-in capital Additional Paid In Capital Common Stock Accumulated deficit Retained Earnings Accumulated Deficit Accumulated other comprehensive loss Accumulated Other Comprehensive Income Loss Net Of Tax Total stockholders’ equity Stockholders Equity Total liabilities and stockholders’ equity Liabilities And Stockholders Equity Preferred stock, par value Preferred Stock Par Or Stated Value Per Share Preferred stock, shares authorized Preferred Stock Shares Authorized Preferred stock, shares issued Preferred Stock Shares Issued Preferred stock, shares outstanding Preferred Stock Shares Outstanding Common stock, par value Common Stock Par Or Stated Value Per Share Common stock, shares authorized Common Stock Shares Authorized Common stock, shares issued Common Stock Shares Issued Common stock, shares outstanding Common Stock Shares Outstanding Other nonoperating income (expense), other. Income Statement [Abstract] Operating expenses: Operating Expenses [Abstract] Research and development Research And Development Expense General and administrative General And Administrative Expense Total operating expenses Operating Expenses Loss from operations Operating Income Loss Other income (expense): Other Nonoperating Income Expense [Abstract] Interest income, net Interest Income Expense Net Other expense Other Nonoperating Income Expense Other Total other income (expense) Other Nonoperating Income Expense Loss before provision for income taxes Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Provision for income taxes Income Tax Expense Benefit Net loss Net Income Loss Unrealized loss on marketable securities, net of tax Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax Comprehensive loss Comprehensive Income Net Of Tax Net loss per share -- basic and diluted Earnings Per Share Basic And Diluted Weighted-average common shares outstanding Weighted Average Number Of Share Outstanding Basic And Diluted Exercise of stock options and common stock value issued under employee stock purchase plans. Statement Of Stockholders Equity [Abstract] Statement [Table] Statement [Table] Accumulated Other Comprehensive Loss Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid In Capital [Member] Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Income [Member] Accumulated Deficit Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Balance Balance, Shares Shares Outstanding Exercise of stock options Stock Issued During Period Value Stock Options Exercised Exercise of stock options, Shares Stock Issued During Period Shares Stock Options Exercised Exercise of stock options and common stock issued under the 2020 ESPP Exercise Of Stock Options And Common Stock Value Issued Under Employee Stock Purchase Plans Exercise of stock options and common stock issued under employee stock purchase plans. Exercise of stock options and common stock issued under the 2020 ESPP, Shares Exercise Of Stock Options And Common Stock Issued Under Employee Stock Purchase Plans Stock-based compensation expense Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Net loss Unrealized loss on available for sale investments Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Balance Balance, Shares Other non-cash lease expense. Increase (decrease) in operating lease right-of-use assets and liabilities. Statement Of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided By Used In Operating Activities [Abstract] Net loss Profit Loss Adjustments to reconcile net loss to net cash used in operating activities: Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Stock-based compensation Share Based Compensation Depreciation Depreciation Amortization of premiums on marketable securities Accretion Amortization Of Discounts And Premiums Investments Non-cash lease expense Other Non Cash Lease Expense Change in operating assets and liabilities: Increase Decrease In Operating Capital [Abstract] Prepaid expenses and other assets Increase Decrease In Prepaid Deferred Expense And Other Assets Operating lease right-of-use assets and liabilities Increase Decrease In Operating Lease Right Of Use Assets And Liabilities Accounts payable Increase Decrease In Accounts Payable Accrued expenses Increase Decrease In Accrued Liabilities Net cash used in operating activities Net Cash Provided By Used In Operating Activities Cash flows from investing activities: Net Cash Provided By Used In Investing Activities [Abstract] Purchase of property and equipment Payments To Acquire Property Plant And Equipment Purchase of marketable securities Payments To Acquire Marketable Securities Maturities of marketable securities Proceeds From Sale And Maturity Of Marketable Securities Net cash (used in) investing activities Net Cash Provided By Used In Investing Activities Cash flows from financing activities: Net Cash Provided By Used In Financing Activities [Abstract] Proceeds from exercise of stock options Proceeds From Stock Options Exercised Net cash provided by financing activities Net Cash Provided By Used In Financing Activities Net decrease in cash and cash equivalents Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Cash, cash equivalents, and restricted cash Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations [Abstract] Cash, cash equivalents, and restricted cash - beginning of period Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Cash, cash equivalents, and restricted cash - end of period Supplemental disclosures of noncash investing activities Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] Accrued purchases of property and equipment Payments To Acquire Productive Assets Supplemental disclosures of cash flow information Supplemental Cash Flow Information [Abstract] Cash paid for income taxes Income Taxes Paid Net Organization Consolidation And Presentation Of Financial Statements [Abstract] Formation and Business of the Company Business Description And Basis Of Presentation [Text Block] Accounting Policies [Abstract] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Fair Value Disclosures [Abstract] Financial Instruments and Fair Value Measurements Fair Value Disclosures [Text Block] Property Plant And Equipment [Abstract] Property and Equipment, Net Property Plant And Equipment Disclosure [Text Block] Payables And Accruals [Abstract] Accrued Expenses Accounts Payable Accrued Liabilities And Other Liabilities Disclosure Current [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] Equity [Abstract] Stockholders' Equity Stockholders Equity Note Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Stock Plan Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Earnings Per Share [Abstract] Net Loss per Share Earnings Per Share [Text Block] Related Party Transactions [Abstract] Related Parties Related Party Transactions Disclosure [Text Block] Basis of Presentation Basis Of Accounting Policy Policy [Text Block] Use of Estimates Use Of Estimates Cash, cash equivalents and marketable securities. Cash, Cash Equivalents and Marketable Securities Cash Cash Equivalents And Marketable Securities Policy [Text Block] Comprehensive Loss Comprehensive Income Policy Policy [Text Block] Leases Lessee Leases Policy [Text Block] Concentration of credit risk and other risks and uncertainties. Concentration of Credit Risk and Other Risks and Uncertainties Concentration Of Credit Risk And Other Risks And Uncertainties Policy [Text Block] Summary of Cash Equivalents and Available-for-sale Securities Carrying Amounts and Fair Values Fair Value Assets Measured On Recurring And Nonrecurring Basis Table [Text Block] Summary of Property and Equipment, Net Property Plant And Equipment [Text Block] Summary of Accrued Expenses Schedule Of Accrued Liabilities Table [Text Block] Summary of Components of Lease Cost Lease Cost Table [Text Block] Schedule of lease amount reported in balance sheet. Schedule of Amounts Reported in Consolidated Balance Sheets for Leases Schedule Of Lease Amount Reported In Balance Sheet Table [Text Block] Schedule of other information related to leases. Summary of Other Information Related to Leases Schedule Of Other Information Related To Leases Table [Text Block] Schedule of Minimum Lease Payments, Net of Reimbursements, under Operating Leases Lessee Operating Lease Liability Maturity Table [Text Block] Schedule of Stock Options Activity Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Schedule of Estimated Fair Value of Stock Options Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block] Stock-based Compensation Expense Related to Options Granted Recorded and Allocated Schedule Of Compensation Cost For Share Based Payment Arrangements Allocation Of Share Based Compensation Costs By Plan Table [Text Block] Schedule of Computation of Net Loss per Share Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Net loss Cash used in operating activities Accumulated deficit Cash, cash equivalents, and marketable securities Cash Cash Equivalents And Short Term Investments Amortization of available-for-sale debt securities Debt Securities Available For Sale Unrealized Gain Loss Restricted cash Restricted Cash Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Financial Instrument Financial Instrument [Axis] Financial Instruments Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain] Corporate Securities Corporate Debt Securities [Member] Government Securities U S Government Agencies Debt Securities [Member] Asset Class Fair Value By Asset Class [Axis] Asset Class Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] Money Market Funds Money Market Funds [Member] Fair Value Hierarchy and NAV Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Hierarchy and NAV Fair Value Measurements Fair Value Hierarchy [Domain] Quoted Priced in Active Markets (Level 1) Fair Value Inputs Level1 [Member] Significant Other Observable Inputs (Level 2) Fair Value Inputs Level2 [Member] Significant Unobservable Inputs (Level 3) Fair Value Inputs Level3 [Member] 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] Carrying Amount Available For Sale Debt Securities Amortized Cost Basis Gross Unrealized Gains Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax Gross Unrealized Losses Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax Fair Value Available For Sale Securities Debt Securities Total financial assets Assets Fair Value Disclosure Cash and Cash Equivalents Cash And Cash Equivalents [Axis] Cash and Cash Equivalents Restricted Cash And Cash Equivalents Cash And Cash Equivalents [Member] Corporate Debt Securities Level 1 Level 2 Government Debt Securities Cash Cash Cash equivalents Cash Equivalents At Carrying Value Marketable Securities Marketable Securities Marketable securities noncurrent Marketable securities current Allowance for credit losses Debt Securities Available For Sale Allowance For Credit Loss Schedule Of Property Plant And Equipment [Table] Schedule Of Property Plant And Equipment [Table] Long-Lived Tangible Asset Property Plant And Equipment By Type [Axis] Long-Lived Tangible Asset Property Plant And Equipment Type [Domain] Machinery & Equipment Machinery And Equipment [Member] Computers Computer Equipment [Member] Furniture & Fixtures Furniture And Fixtures [Member] Leasehold Improvements Leaseholds And Leasehold Improvements [Member] Assets not placed in service. Assets Not Placed in Service Assets Not Placed In Service [Member] Property Plant And Equipment [Line Items] Property Plant And Equipment [Line Items] Total property and equipment Property Plant And Equipment Gross Less: Accumulated depreciation Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Property and equipment, net Accrued research and development costs current. Accrued compensation Workers Compensation Liability Current Accrued legal and professional services Accrued Professional Fees Current Accrued research and development costs Accrued Research And Development Costs Current Other accrued liabilities Other Accrued Liabilities Current Total Operating lease expiration period. Initial base rent per square foot. Operating lease maintenance expense per square foot. Management fee of base rent percentage. Commitments and contingencies disclosure. Commitments and contingencies disclosure. Commitments And Contingencies Disclosure [Table] Commitments And Contingencies Disclosure [Table] Geographical Statement Geographical [Axis] Geographical Segment Geographical [Domain] Cranbury, New Jersey. Cranbury, New Jersey Cranbury New Jersey [Member] South Brunswick, New Jersey. South Brunswick, New Jersey. South Brunswick New Jersey [Member] Lexington, Massachusetts MOROCCO Princeton, New Jersey. Princeton, New Jersey Princeton New Jersey [Member] Commitments And Contingencies Disclosure [Line Items] Commitments And Contingencies Disclosure [Line Items] Area of operating lease property Area Of Real Estate Property Initial base rent per square foot Initial Base Rent Per Square Foot Operating lease expiration period Operating Lease Expiration Period Operating lease maintenance expense per square foot Operating Lease Maintenance Expense Per Square Foot Operating lease, description Lessee Operating Lease Description Management fee of base rent percentage Management Fee Of Base Rent Percentage Initial base rent increased per square foot. Number of noncancelable operating leases. Number of noncancelable operating leases Number Of Noncancelable Operating Leases Operating lease, renewal term Lessee Operating Lease Renewal Term Initial base rent increased per square foot Initial Base Rent Increased Per Square Foot Allowance on behalf of lessor for construction of office space. Allowance on behalf of lessor for construction of office space. Allowance On Behalf Of Lessor For Construction Of Office Space Remaining rent incentives Deferred Rent Credit Operating leases, extended year. Operating Leases, extension period Operating leases extended month and year. Reimbursements received from lessee. Lease area of square feet Area Of Land Operating Leases, extended year Operating Leases Extended Year Operating leases, extension period Operating Leases Extension Period Operating lease, payments Operating Lease Payments Operating leases extended month and year Operating Leases Extended Month And Year Tenant improvement allowance Payments For Proceeds From Tenant Allowance Reimbursements received Reimbursements Received From Lessee Leases [Abstract] Operating lease cost Operating Lease Cost Variable lease cost Variable Lease Cost Total lease cost Lease Cost Operating Leases: Assets And Liabilities Lessee [Abstract] Right-of-use assets, operating leases Operating lease liabilities, current Operating lease liabilities, non-current Total operating lease liabilities Operating Lease Liability Weighted-average remaining lease term (years) Operating Lease Weighted Average Remaining Lease Term1 Weighted-average discount rate Operating Lease Weighted Average Discount Rate Percent Net cash paid for amounts included in the measurement of lease liabilities. Net cash paid for amounts included in the measurement of lease liabilities Net Cash Paid For Amounts Included In The Measurement Of Lease Liabilities Leased assets obtained in exchange for new operating lease liabilities Right Of Use Asset Obtained In Exchange For Operating Lease Liability Lessee operating lease liability payments, net of repayments, due. 2021 Lessee Operating Lease Liability Payments Net Of Reimbursements Remainder Of Fiscal Year 2022 Lessee Operating Lease Liability Payments Net Of Reimbursements Due Next Twelve Months 2023 Lessee Operating Lease Liability Payments Net Of Reimbursements Due Year Two 2024 Lessee Operating Lease Liability Payments Net Of Reimbursements Due Year Three 2025 Lessee Operating Lease Liability Payments Net Of Reimbursements Due Year Four Thereafter Lessee Operating Lease Liability To Be Paid Net Of Repayments After Year Four Total minimum lease payments Lessee Operating Lease Liability Payments Net Of Repayments Due Less: Amounts representing imputed interest Lessee Operating Lease Liability Undiscounted Excess Amount Present value of lease liabilities Rent expense Operating Lease Expense Sublease expiration period. Sublease expiration period Sublease Expiration Period Sublease income Sublease Income Dividends, common stock declared Dividends Common Stock Share-based compensation arrangement by share-based payment award, annual increase of authorized shares, percent of common stock outstanding. Common stock, capital shares reserved for future issuance, additional shares reserved, minimum. Common stock, capital shares reserved for future issuance, additional shares reserved, maximum. Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Plan Name Plan Name [Axis] Plan Name Plan Name [Domain] Two thousand twenty equity incentive plan. 2020 Plan Two Thousand Twenty Equity Incentive Plan [Member] Two thousand twenty employee stock purchase plan. 2020 ESPP Two Thousand Twenty Employee Stock Purchase Plan [Member] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Number of shares reserved for issuance Common Stock Capital Shares Reserved For Future Issuance Number of additional shares reserved for issuance, minimum Common Stock Capital Shares Reserved For Future Issuance Additional Shares Reserved Minimum Percentage of number of shares of common stock outstanding increase Share Based Compensation Arrangement By Share Based Payment Award Annual Increase Of Authorized Shares Percent Of Common Stock Outstanding Number of additional shares reserved for issuance, maximum Common Stock Capital Shares Reserved For Future Issuance Additional Shares Reserved Maximum Shares issued Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period Share-based compensation arrangement by share-based payment award, shares outstanding, number. Shares outstanding Share Based Compensation Arrangement By Share Based Payment Award Shares Outstanding Number Share-based compensation arrangement by share-based payment award, number of shares available for grant, shares reserved for issuance. Share-based compensation arrangement by share-based payment award, number of shares available for grant, grants in period. Share-based compensation arrangement by share-based payment award, number of shares available for grant, forfeitures in period. Share based compensation arrangement by share based payment award, number of shares available for grant, exercised in period. Share based compensation arrangement by share based payment award options shares available for grant. Shares Available For Grant Share Based Compensation Arrangement By Share Based Payment Award Options Shares Available For Grant Roll Forward Shares Available for Grant, Balance Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant Shares Available for Grant, Shares reserved for issuance Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant Shares Reserved For Issuance Shares Available for Grant, Options granted Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant Grants In Period Shares Available for Grant, Options forfeited / cancelled Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant Forfeitures In Period Shares Available for Grant, Options exercised Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant Exercised In Period Shares Available for Grant, Balance Number of Options Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Roll Forward Options Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number Options granted, Number of Options Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Options forfeited / cancelled, Number of Options Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Options exercised, Number of Options Options Outstanding, Number of Options Vested and expected to vest, Number of Options Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number Exercisable, Number of Options Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number Weighted Average Exercise Price Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Rollforward Options Outstanding, Weighted Average Exercise Price Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Options granted, Weighted Average Exercise Price Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price Options forfeited / cancelled, Weighted Average Exercise Price Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price Options exercised, Weighted Average Exercise Price Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price Options Outstanding, Weighted Average Exercise Price Vested and expected to vest, Weighted Average Exercise Price Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price Exercisable, Weighted Average Exercise Price Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price Share based compensation arrangement by share based payment award options weighted-average remaining life. Sharebased compensation arrangement by sharebased payment award options exercised weighted average remaining contractual term. Weighted-Average Remaining Contractual Life Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Remaining Life [Abstract] Options Outstanding, Weighted-Average Remaining Contractual Life Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 Options Forfeited/Cancelled, Weighted-Average Remaining Contractual Life Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercised Weighted Average Remaining Contractual Term Vested and expected to vest, Weighted-Average Remaining Contractual Life Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 Exercisable, Weighted-Average Remaining Contractual Life Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 Share based compensation arrangement by share based payment award options intrinsic value. Aggregate Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Options Intrinsic Value [Abstract] Options Outstanding, Aggregate Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value Vested and expected to vest, Aggregate Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value Exercisable, Aggregate Intrinsic Value Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 Total compensation cost related to nonvested awards not yet recognized Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options Weighted-average period over nonvested awards expected to be recognized Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 Statistical Measurement Range [Axis] Statistical Measurement Range [Member] Minimum Minimum [Member] Maximum Maximum [Member] Risk-free interest rate Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Risk-free interest rate, minimum Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Minimum Risk-free interest rate, maximum Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Maximum Expected life (in years) Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 Dividend yield Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate Expected volatility Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] Research and Development Research And Development Expense [Member] General and Administrative General And Administrative Expense [Member] Total stock-based compensation Allocated Share Based Compensation Expense Weighted-average number of shares - basic and diluted Number of consulting agreements members. Schedule Of Related Party Transactions By Related Party [Table] Schedule Of Related Party Transactions By Related Party [Table] Related Party Related Party Transactions By Related Party [Axis] Related Party Related Party [Domain] Board of directors. Board of Directors Board Of Directors [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Number of consulting agreement members Number Of Consulting Agreements Members Consulting fees Related Party Transaction Expenses From Transactions With Related Party Amount owed to related party Due To Related Parties Current And Noncurrent Options awarded