Entity Central Index Key Cover [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Registrant Name Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Trading Symbol Trading Symbol Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Entity Shell Company Entity Shell Company Entity Emerging Growth Company Entity Emerging Growth Company Entity Ex Transition Period Entity Ex Transition Period Entity Small Business Entity Small Business Entity File Number Entity File Number 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 Entity Interactive Data Current Entity Interactive Data Current Entity Incorporation, State or Country Code Entity Incorporation State Country Code Document Quarterly Report Document Quarterly Report Document Transition Report Document Transition Report Title of 12(b) Security Security12b Title Security Exchange Name Security Exchange Name It represents Tax credit and other receivables. Statement Of Financial Position [Abstract] Assets Assets [Abstract] Current assets: Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Tax credit and other receivables Tax Credit And Other Receivables Prepaid expenses Prepaid Expense Current Total current assets Assets Current Operating lease right-of-use asset Operating Lease Right Of Use Asset Security deposit Security Deposit Property, equipment and leasehold improvements, net Property Plant And Equipment Net 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 portion Operating Lease Liability Current Total current liabilities Liabilities Current Operating lease liability - long term portion Operating Lease Liability Noncurrent Commitments and contingencies (Note 12) Commitments And Contingencies Stockholders’ equity (deficit): Stockholders Equity [Abstract] Common stock: $0.001 par value; 200,000,000 shares authorized at March 31, 2020 and December 31, 2019, respectively; and 17,834,570 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively. Common Stock Value Preferred stock: $0.001 par value; 5,000,000 shares authorized at March 31, 2020 and December 31, 2019, respectively; no shares issued or outstanding at March 31, 2020 or December 31, 2019. Preferred Stock Value Additional paid-in capital Additional Paid In Capital Accumulated deficit Retained Earnings Accumulated Deficit Total stockholders’ equity Stockholders Equity Total liabilities and stockholders’ equity Liabilities And Stockholders Equity Common Stock, Par or Stated Value Per Share 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 Preferred Stock, Par or Stated Value Per Share 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 Amount of gain (loss) from the increase (decrease) in fair value of obligation for loan success fee. 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): Nonoperating Income Expense [Abstract] Change in fair value of obligation for loan success fee Change In Fair Value Of Obligation For Loan Success Fee Interest income Interest Income Expense Nonoperating Net Total other income (expense), net Nonoperating Income Expense Loss before income tax benefit Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income tax benefit Income Tax Expense Benefit Net loss Net Income Loss Accretion of redeemable convertible preferred stock Temporary Equity Accretion To Redemption Value Adjustment Dividends accrued on redeemable convertible preferred stock Redeemable Preferred Stock Dividends Adjusted net loss attributable to common stockholders Net Income Loss Available To Common Stockholders Basic Basic and diluted net loss per common share outstanding Earnings Per Share Basic And Diluted Weighted average common shares used in net loss per share attributable to common stockholders, basic and diluted Weighted Average Number Of Share Outstanding Basic And Diluted The value of Redeemable convertible preferred stock. The number of Issuance Redeemable Convertible Preferred Stock shares. Accretion (amortization) of premium (discount) on issuance of redeemable convertible preferred stock. Accretion of discount on Investor rights. Adjustment for Excess of Fair value Liquidation. Issuance costs on Redeemable Convertible Preferred stock Equity [Abstract] Statement [Table] Statement [Table] Class of Stock Statement Class Of Stock [Axis] Class of Stock Class Of Stock [Domain] Series A redeemable convertible preferred stock. Series A Redeemable convertible Preferred Stock [Member] Series A Redeemable Convertible Preferred Stock [Member] Series B redeemable convertible preferred stock. Series B Redeemable convertible Preferred Stock [Member] Series B Redeemable Convertible Preferred Stock [Member] Series C redeemable convertible preferred stock. Series C Redeemable convertible Preferred Stock [Member] Series C Redeemable Convertible Preferred Stock [Member] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Additional Paid In Capital [Member] Accumulated Deficit [Member] Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Beginning Balance Beginning Balance (in shares) Shares Outstanding Stock-based compensation Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Issuance of common stock from exercise of stock options Stock Issued During Period Value Stock Options Exercised Issuance of common stock from exercise of stock options (in shares) Stock Issued During Period Shares Stock Options Exercised Issuance of Series C redeemable convertible preferred stock, net of issuance costs Issuance Of Redeemable Convertible Preferred Stock Net Of Issuance Cost Issuance of Series C redeemable convertible preferred stock, net of issuance costs (in shares) Issuance Of Redeemable Convertible Preferred Stock Net Of Issuance Cost Shares Dividends accrued on redeemable convertible preferred stock Adjustments To Additional Paid In Capital Dividends In Excess Of Retained Earnings Accretion (amortization) of premium (discount) on issuance of redeemable convertible preferred stock Accretion Amortization Of Premium Discount On Issuance Of Redeemable Convertible Preferred Stock Accretion of discount on investor rights/obligation Accretion Of Discount On Investor Rightsobligation Adjustment for excess (shortfall) of fair value over liquidation value of redeemable convertible preferred stock Adjustment For Excess Of Fair Value Liquidation Redeemable Convertible Preferred Stock Accretion of issuance costs on redeemable convertible preferred stock Accretion Of Issuance Costs On Redeemable Convertible Preferred Stock Net loss Ending Balance Ending Balance (in shares) It represents the amount of Change in fair value Loan Success Fee. The cash outflow related to deferred offering costs. The amount of deferred offering costs that were incurred during a noncash or partial noncash transaction. It represents Dividend Accrued on Redeemable convertible preferred stock. It represents Accretion on redeemable Convertible preferred stock. Statement Of Cash Flows [Abstract] Operating activities Net Cash Provided By Used In Operating Activities [Abstract] 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] Depreciation Depreciation Changes in fair value of obligation for loan success fee Change In Fair Value Loan Success Fee Stock-based compensation Share Based Compensation Changes in operating assets and liabilities: Increase Decrease In Operating Capital [Abstract] Receivables Increase Decrease In Accounts Receivable Prepaid expenses Increase Decrease In Prepaid Expense 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 Investing activities Net Cash Provided By Used In Investing Activities [Abstract] Acquisitions of property, equipment and leasehold improvements Payments To Acquire Property Plant And Equipment Net cash used in investing activities Net Cash Provided By Used In Investing Activities Financing activities Net Cash Provided By Used In Financing Activities [Abstract] Proceeds from exercises of stock options Proceeds From Stock Options Exercised Proceeds from sale of Series C redeemable convertible preferred stock, net of issuance costs Proceeds From Issuance Of Convertible Preferred Stock Deferred offering costs Payments For Deferred Offering Costs Net cash provided by financing activities Net Cash Provided By Used In Financing Activities Net cash increase (decrease) Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Cash and cash equivalents at beginning of period Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Cash and cash equivalents at end of period Supplemental disclosure of non-cash financing activities Noncash Investing And Financing Items [Abstract] Deferred offering costs Non Cash Deferred Offering Cost Dividends accrued on redeemable convertible preferred stock Dividend Accrued On Redeemable Convertible Preferred Stock Accretion on redeemable convertible preferred stock Accretion On Redeemable Convertible Preferred Stock Organization Consolidation And Presentation Of Financial Statements [Abstract] Nature of the Business Nature Of Operations Accounting Policies [Abstract] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Represents entire disclosure for prepaid expenses. Prepaid Expense Current [Abstract] Prepaid Expenses Prepaid Expenses [Text Block] Leases [Abstract] Leases Lessee Operating Leases [Text Block] Payables And Accruals [Abstract] Accrued Expenses Accounts Payable And Accrued Liabilities Disclosure [Text Block] Debt Disclosure [Abstract] Term Loan Payable Debt Disclosure [Text Block] The entire disclosure for the common stock details. Common Stock Number Of Shares Par Value And Other Disclosures [Abstract] Common Stock Common Stock [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-Based Awards 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] Earnings Per Share Earnings Per Share [Text Block] Collaborative and Licensing Agreements Collaborative Arrangement Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] Basis of Presentation Basis Of Presentation And Significant Accounting Policies [Text Block] Use of Estimates Use Of Estimates Disclosure of accounting policy for unaudited interim financial information. Unaudited Interim Financial Information Interim Financial Information Policy [Text Block] Fair Value Measurements Fair Value Measurement Policy Policy [Text Block] Deferred Offering Costs Deferred Charges Policy [Text Block] Basic and Diluted Net Income (Loss) per Common Share Earnings Per Share Policy [Text Block] Recently Adopted Accounting Pronouncements New Accounting Pronouncements Policy Policy [Text Block] Schedule of Fair Value, Financial Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Text Block] Tabular disclosure of the carrying amounts of other prepaid assets. Schedule of Prepaid Expenses Schedule Of Prepaid Assets Table [Text Block] Tabular disclosure of balance sheet information related to operating leases. Schedule of Balance Sheet Information Related to Operating Leases Schedule Of Balance Sheet Information Related To Operating Leases Table [Text Block] Future Minimum Lease Payments for Non-cancellable Operating Leases Lessee Operating Lease Liability Maturity Table [Text Block] Schedule of Accrued Expenses Schedule Of Accrued Liabilities Table [Text Block] Table depicting the shares which are to be issued in the future when the preferred stock is converted Schedule of Common Stock Reserved for Future Issuance Schedule Of Common Stock Reserved For Future Issuance Table [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Schedule of Share-based Compensation, Stock Options, Activity Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Schedule of Stock-based Compensation Expenses Recognized Schedule Of Compensation Cost For Share Based Payment Arrangements Allocation Of Share Based Compensation Costs By Plan Table [Text Block] Schedule of Earnings Per Share, Basic and Diluted Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block] Sale of Stock Subsidiary Sale Of Stock [Axis] Sale of Stock Sale Of Stock Name Of Transaction [Domain] IPO [Member] I P O [Member] Stockholders equity reverse stock split Stockholders Equity Reverse Stock Split Represents underwriters discounts and commissions. Other offering expenses. Sale of stock during the period Stock Issued During Period Shares New Issues Share price Share Price Proceeds from public offering Proceeds From Issuance Initial Public Offering Underwriting discounts and commissions Underwriting Discounts And Commissions Other offering expenses Other Offering Expenses Net income loss Retained earnings accumulated deficit Cash and cash equivalents, at carrying value Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Measurement Frequency Fair Value By Measurement Frequency [Axis] Measurement Frequency Fair Value Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value Measurements Recurring [Member] Liability Class Fair Value By Liability Class [Axis] Fair Value by Liability Class Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation By Liability Class [Domain] Series C convertible preferred stock. Series C Convertible Preferred Stock [Member] Series C Convertible Preferred Stock [Member] Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Financial assets Assets Fair Value Disclosure Financial liabilities Financial Liabilities Fair Value Disclosure Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table] Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table] Obligations [Member] Obligations [Member] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] Beginning balance at January 1, 2019 Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value Unrealized loss on financial liabilities Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Net settlements Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements Ending balance at December 31, 2019 It represents for obligation of loan success fee. Settlements of fair value liability Loan success fee payable Loan Success Fee Payable Amount of asset related to consideration paid in advance for research and development that provide economic benefits within a future period of one year or the normal operating cycle, if longer. Prepaid R&D payments Prepaid Research And Development Expenses Prepaid corporate insurance Prepaid Insurance Other Other Prepaid Expense Current Prepaid expense Property, Plant and Equipment, Type Property Plant And Equipment By Type [Axis] Property, Plant and Equipment, Type Property Plant And Equipment Type [Domain] Building [Member] Building [Member] Statistical Measurement Range [Axis] Statistical Measurement Range [Member] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Office Equipment [Member] Office Equipment [Member] Leased spaced area Area Of Land Operating lease term Lessee Operating Lease Term Of Contract Operating lease rent expense Operating Leases Rent Expense Net Lessee, operating lease, existence of option to terminate Lessee Operating Lease Existence Of Option To Terminate Operating lease option to terminate Lessee Operating Lease Option To Terminate Number of new leases. Operating lease, weighted average discount rate, percent Operating Lease Weighted Average Discount Rate Percent Number of new leases Number Of New Leases Remaining terms ranging Operating Lease Weighted Average Remaining Lease Term1 XXX_Operating Lease Assets [Abstract] XXX_Operating Lease Liabilities [Abstract] Assets: Operating Lease Assets [Abstract] Liabilities: Operating Lease Liabilities [Abstract] Operating lease liabilities, current portion Operating lease liabilities, long term portion Total operating lease liabilities Operating Lease Liability 2020 Lessee Operating Lease Liability Payments Remainder Of Fiscal Year 2021 Lessee Operating Lease Liability Payments Due Year Two 2022 Lessee Operating Lease Liability Payments Due Year Three 2023 Lessee Operating Lease Liability Payments Due Year Four Total lease payments Lessee Operating Lease Liability Payments Due Less: imputed discount rate Lessee Operating Lease Liability Undiscounted Excess Amount Carrying value of operating lease liabilities Operating Lease, Payments Operating Lease Payments Carrying value of accrued research liabilities settled within operating liabilities. Accrued research projects Accrued Research Liabilities Accrued professional fees Accrued Professional Fees Current Accrued compensation and benefits Accrued Employee Benefits Current Other Other Accrued Liabilities Current Total Accrued expenses Represents payments of final fee on term loan. Represents payments of amendment fee on term loan. Long-term Debt, Type Longterm Debt Type [Axis] Long-term Debt, Type Longterm Debt Type [Domain] Term loan. Term Loan [Member] Term Loan [Member] Term loan A. Term loan A [Member] Term Loan A [Member] Line of credit facility, maximum borrowing capacity Line Of Credit Facility Maximum Borrowing Capacity Payment of final fee Payment Of Final Fee Payment of amendment fee Payment Of Amendment Fee Line of credit facility, outstanding borrowings Line Of Credit Loan success fee as percentage of funded term loan. Loan success fee, as percentage of term loan funded Loan Success Fee As Percentage Of Funded Term Loan It represents fair value of loan success fee payable. It represents the change in fair value of charged to loan success fee payable. Fair value of success fee liabilities Loan Success Fee Payable Fairvalue Non cash charges Non Cash Charge Common stock, shares authorized Common stock, par or stated value per share Common stock, capital shares reserved for future issuance Common Stock Capital Shares Reserved For Future Issuance Common stock reserved for issuances in the future upon conversion of preferred stock. Common stock reserved for issuances in the future upon conversion of preferred stock. Common Stock Reserved For Issuances In Future Upon Conversion Of Preferred Stock [Table] Common Stock Reserved For Issuances In Future Upon Conversion Of Preferred Stock [Table] Plan Name Plan Name [Axis] Plan Name Plan Name [Domain] 2012 stock option and grant plan. 2012 Stock Option And Grant Plan [Member] Two Thousand And Twelve Stock Option And Grant Plan [Member] Two thousand and nineteen stock option and grant plan. 2019 Stock Option And Grant Plan [Member] Two Thousand And Nineteen Stock Option And Grant Plan [Member] Employee Stock Ownership Plan (ESOP) Name Employee Stock Ownership Plan E S O P Disclosures By Plan [Axis] Employee Stock Ownership Plan (ESOP), Plan Employee Stock Ownership Plan E S O P Plan [Domain] Two thousand and twelve stock incentive plan. 2012 Stock Incentive Plan [Member] Two Thousand And Twelve Stock Incentive Plan [Member] Two thousand and nineteen stock incentive plan. 2019 Stock Incentive Plan [Member] Two Thousand And Nineteen Stock Incentive Plan [Member] Two thousand and nineteen employee stock purchase plan. 2019 Employee Stock Purchase Plan [Member] Two Thousand And Nineteen Employee Stock Purchase Plan [Member] Common Stock Reserved For Issuances In The Future Upon Conversion Of Preferred Stock [Line Items] Common Stock Reserved For Issuances In The Future Upon Conversion Of Preferred Stock [Line Items] Common Stock, Capital Shares Reserved for Future Issuance Common stock capital shares reserved for future issuance, increase in shares. Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] 2012 Stock Incentive Plan [Member] 2012 Stock Incentive Plan [Member] Two Thousand Twelve Stock Incentive Plan [Member] Vesting Vesting [Axis] Vesting Vesting [Domain] Vesting First Anniversary Date of Grant [Member] Share Based Compensation Award Tranche One [Member] Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation Deferred Compensation Arrangement With Individual Share Based Payments By Type Of Deferred Compensation [Axis] Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation Equity Based Arrangements Individual Contracts Type Of Deferred Compensation [Domain] Stock Option [Member] Employee Stock Option [Member] Other equity-based award. Other Equity-Based Award [Member] Other Equity Based Award [Member] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share based compensation, award description Share Based Compensation Arrangement By Share Based Payment Award Description Common stock, capital shares reserved for future issuance, annual increase Common Stock Capital Shares Reserved For Future Issuance Increase In Shares Share based compensation options to purchase no of common stock Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number Increase in additional number of shares to be issued Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized Percentage of number of common stock, shares outstanding Share Based Compensation Arrangement By Share Based Payment Award Percentage Of Outstanding Stock Maximum Share based compensation grant period. Share based compensation grant period Share Based Compensation Grant Period Share based compensation vesting period Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 Share based compensation vesting Percentage Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage Share based compensation vesting description Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Rights Share based compensation options grants in the period Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Share based compensation options granted, exercise in the period Share based compensation options granted, forfeited in the period Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Number of Option Shares Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Roll Forward Outstanding, Beginning Granted Forfeited Expired Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period Exercised Outstanding, Ending Options exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number Options unvested Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares Weighted Average Exercise Price Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Rollforward Outstanding, Beginning Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Granted Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price Forfeited Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price Expired Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price Exercised Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price Outstanding, Ending Options exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price Options unvested Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value Weighted average contractual term for option awards unvested, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days Weighted Average Contractual Term, Outstanding Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 Weighted Average Contractual Term, Options exercisable Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 Weighted Average Contractual Term, Options unvested Sharebased Compensation Arrangement By Share Based Payment Award Options Unvested Weighted Average Contractual Term Fair value of options unvested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock. Aggregate Intrinsic Value, Outstanding Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value Aggregate Intrinsic Value, Options exercisable Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 Aggregate Intrinsic Value, Options unvested Share Based Compensation Arrangement By Share Based Payment Award Options Unvested In Period Fair Value Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] Research and Development Expense [Member] Research And Development Expense [Member] General and Administrative Expense [Member] General And Administrative Expense [Member] Plus: Accretion of redeemable convertible preferred stock Plus: Dividends accrued on redeemable convertible preferred stock Adjusted net loss attributable to common stockholders Antidilutive Securities Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities, Name Antidilutive Securities Name [Domain] Antidilutive securities excluded from computation of earnings per share, amount Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Milestone payment. The amount represents payment of upfront license fee. Legal Entity Legal Entity [Axis] Entity Entity [Domain] Endo Pharmaceuticals Inc. Endo Pharmaceuticals Inc [Member] Endo Pharmaceuticals Inc [Member] Project Capitalized Costs Of Unproved Properties Excluded From Amortization By Property Or Project [Axis] Project Project [Member] Completion of stage one. Completion Of Stage One [Member] Completion Of Stage One [Member] Completion of stage two. Completion Of Stage Two [Member] Completion Of Stage Two [Member] Rutgers. Rutgers [Member] Rutgers [Member] MentiNova, Inc. MentiNova Inc [Member] Mentinova Inc [Member] Upfront license fee Payment For Upfront License Fee Milestone payment Milestone Payment Liability Royalty terms. Royalty terms Royalty Terms And Conditions