Entity Central Index Key Document and Entity Information [Abstract] Document And Entity Information [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 It represents Tax credit and other receivables. It Represents for Obligation of Loan Success Fee. It Represents Series C Redeemable Convertible Preferred Stock Liability. Statement Of Financial Position [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] Statement [Line Items] Statement [Line Items] 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 Deferred offering costs Deferred Offering Costs 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, redeemable convertible preferred stock and stockholders’ equity (deficit) 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 Obligation for loan success fee Loan Success Fee Series C redeemable convertible preferred stock liability Series C Redeemable Convertible Preferred Stock Liability Operating lease liability - long term portion Operating Lease Liability Noncurrent Commitments and contingencies (Note 13) Commitments And Contingencies Temporary Equity, Carrying Amount, Attributable to Parent Temporary Equity Carrying Amount Attributable To Parent Stockholders’ equity (deficit): Stockholders Equity [Abstract] Common stock: $0.001 par value; 200,000,000 and 101,929,904 shares authorized at June 30, 2019 and December 31, 2018, respectively; and 17,834,570 and 438,600 shares issued and outstanding at June 30, 2019 and December 31, 2018, respectively. Common Stock Value Preferred stock: $0.001 par value; 5,000,000 shares and no shares authorized at June 30, 2019 and December 31, 2018, respectively; no shares issued or outstanding at June 30, 2019 or December 31, 2018. Preferred Stock Value Additional paid-in capital Additional Paid In Capital Accumulated deficit Retained Earnings Accumulated Deficit Total stockholders’ equity (deficit) Stockholders Equity Total liabilities, redeemable convertible preferred stock and stockholders’ equity (deficit) Liabilities And Stockholders Equity Temporary Equity, Shares Authorized Temporary Equity Shares Authorized Temporary Equity, Shares Issued Temporary Equity Shares Issued Temporary Equity, Shares Outstanding Temporary Equity Shares Outstanding Temporary Equity, Liquidation Preference Temporary Equity Liquidation Preference 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 It represents the amount of Change in fair value of Redeemable Convertible Preferred Stock Liablility. 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 Series C redeemable convertible preferred stock liability Change In Fair Value Of Redeemable Convertible Preferred Stock Liability 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 Interest expense Interest Expense 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 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 The value of Redeemable convertible preferred stock. Equity [Abstract] 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] Retained Earnings [Member] Retained Earnings [Member] Sale of Stock Subsidiary Sale Of Stock [Axis] Sale of Stock Sale Of Stock Name Of Transaction [Domain] Initial Public Offering [Member] I P O [Member] Private Placement [Member] Private Placement [Member] 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 The number of Issuance Redeemable Convertible Preferred Stock shares. 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 Dividends accrued on redeemable convertible preferred stock, (in shares) Preferred Stock Dividends Shares 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 Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering Stock Issued During Period Value Conversion Of Convertible Securities Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering, (in shares) Stock Issued During Period Shares Conversion Of Convertible Securities Issuance of common stock value, net of underwriting discounts and commissions and issuance costs Stock Issued During Period Value New Issues Issuance of common stock shares, net of underwriting discounts and commissions and issuance costs Stock Issued During Period Shares New Issues Net loss Ending Balance Ending Balance (in shares) It represents the amount of Change in fair value Loan Success Fee. Payments for final fees on term loan. Payments for loan success fee. It represents state research tax credits exchanged for cash. Initial public offering costs included in accounts payable and accrued expenses. 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 Series C redeemable convertible preferred stock liability Changes in fair value of obligation for loan success fee Change In Fair Value Loan Success Fee Accretion/accrual of term loan discounts and debt issuance costs Amortization Of Financing Costs And Discounts 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 Security deposit Increase Decrease In Security Deposits 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] Repayments of term loan Repayments Of Long Term Debt Payment of final fees on term loan Payments For Final Fees On Term Loan Payment of loan success fee Payments For Loan Success Fee 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 Proceeds from issuance of common shares upon completion of initial public offering, net of underwriting commissions and discounts Proceeds From Issuance Initial Public Offering Payments of initial public offering costs Payments Of Stock Issuance Costs Proceeds from private placement, net of private placement agent fees Proceeds From Issuance Of Private Placement Net cash provided by (used in) financing activities Net Cash Provided By Used In Financing Activities Net cash increase (decrease) Cash And Cash Equivalents Period Increase Decrease Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Supplemental disclosure of cash flow information Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid Net State research tax credits exchanged for cash Income Tax Credits Exchanged For Cash Supplemental disclosure of non-cash financing activities Noncash Investing And Financing Items [Abstract] Initial public offering costs included in accounts payable and accrued expenses Initial Public Offering Costs Included In Accounts Payable And Accrued Expenses 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 temporary equity. Disclosure of redeemable convertible preferred stock. Disclosure Of Redeemable Convertible Preferred Stock [Abstract] Redeemable Convertible Preferred Stock Temporary Equity [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 Fair Value Liabilities Measured On Recurring Basis [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 Schedule Of Future Minimum Rental Payments For Operating Leases Table [Text Block] Schedule of Accrued Expenses Schedule Of Accrued Liabilities Table [Text Block] Tabular disclosure of components included on interest expense. Schedule of Components of Interest Expense of Term Loan Schedule Of Components Of Interest Expense Of Term Loan 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] The disclosure of schedule of redeemable convertible preferred stock. Schedule of Redeemable Convertible Preferred Stock Schedule Of Redeemable Convertible Preferred Stock 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] IPO [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 Share price Share Price Proceeds from 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] Fair Value, 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 liabilities Financial Liabilities Fair Value Disclosure Represents liability portion (i.e other than equity portion) of redeemable convertible preferred stock. Represents fair value of obligation fee. 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] Fair Value, Inputs, Level 1 Fair Value Inputs Level1 [Member] Fair Value, Inputs, Level 2 Fair Value Inputs Level2 [Member] Fair Value, Inputs, Level 3 Fair Value Inputs Level3 [Member] Series C Preferred Stock [Member] Series C Preferred Stock [Member] Financial liabilities Financial Liabilities Fair Value Disclosure [Abstract] Series C redeemable convertible preferred stock liability Convertible Preferred Stock Liability Obligation for loan success fee Obligations Fee 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 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] Balance at beginning of year Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value Unrealized loss on Series C redeemable convertible preferred stock liability 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 It represents for obligation of loan success fee. Settlements of fair value liability Loan success fee payable Loan Success Fee Payable Represents portion of deferred costs capitalized. Deferred offering costs capitalized Capitalized Deferred Offering Costs Operating lease right-of-use asset Operating lease, liability Operating Lease Liability 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] Range Range [Axis] Range 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 2019 Operating Leases Future Minimum Payments Remainder Of Fiscal Year 2020 Operating Leases Future Minimum Payments Due In Two Years 2021 Operating Leases Future Minimum Payments Due In Three Years 2022 Operating Leases Future Minimum Payments Due In Four Years 2023 Operating Leases Future Minimum Payments Due In Five Years Total lease payments Operating Leases Future Minimum 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 It represents percentage of loan success fee. It represents term loan discount. Loan success fee percentage Loan Success Fee Percentage Discount on term loan Discount On 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 It represents percentage of discount on loan. Weighted estimated time of exit event in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. It represents the percentage of several potential exit events. Loan discount percentage Loan Discount Percentage Weighted estimated time of exit event Weighted Estimated Time Of Exit Event Percentage of several potential exit events Percentage Of Several Potential Exit Events Interest expense The amount represents interest expense that was paid Represents accrued loan amendment fee. Represents for obligation loan discount of success fee Interest payments Interest Expense Payments Amortization of financing costs Amortization Of Financing Costs Accrual of final and amendment fees Accrual Of Final And Amendment Fees Accretion of the Success Fee Obligation For Loan Discount Success Fee Total interest expense 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 Temporary Equity Disclosure [Abstract] Temporary Equity By Class Of Stock [Table] Temporary Equity By Class Of Stock [Table] Redeemable Convertible Preferred Stock [Member] Redeemable Convertible Preferred Stock [Member] Series A redeemable convertible preferred stock member. Series A Redeemable convertible Preferred Stock Member [Member] Series A Redeemable Convertible Preferred Stock Member [Member] Agreement Type Agreement Type Agreement Type [Axis] Agreement Type Agreement Type Agreement Type [Domain] Series A extension purchase agreement. Series A Extension Purchase Agreement [Member] Series A Extension Purchase Agreement [Member] Series B redeemable convertible preferred stock member. Series B Redeemable convertible Preferred Stock Member [Member] Series B Redeemable Convertible Preferred Stock Member [Member] Series B purchase agreement. Series B Purchase Agreement [Member] Series B Purchase Agreement [Member] Series B second closing. Series B Second Closing [Member] Series B Second Closing [Member] Series C redeemable convertible preferred stock member. Series C Redeemable convertible Preferred Stock Member [Member] Series C Redeemable Convertible Preferred Stock Member [Member] Preferred Stock Vesting Preferred Stock Vesting Preferred Stock Vesting [Axis] Preferred Stock Vesting Preferred Stock Vesting Preferred Stock Vesting [Domain] Tranche One Tranche One [Member] Tranche One [Member] Convertible Debt [Member] Convertible Debt [Member] Tranche Two Tranche Two [Member] Tranche Two [Member] Tranche Third Tranche Third [Member] Tranche Third [Member] Restatement Restatement [Axis] Restatement Restatement [Domain] Restatement Adjustment [Member] Restatement Adjustment [Member] Series A Preferred Stock [Member] Series A Preferred Stock [Member] Series B Preferred Stock [Member] Series B Preferred Stock [Member] Measurement Input Type Measurement Input Type [Axis] Measurement Input Type Measurement Input Type [Domain] Measeurement Input, Discount for Lack of Marketability [Member] Measurement Input Discount For Lack Of Marketability [Member] Measurement Input, Probability Factor [Member] Measurement Input Default Rate [Member] Measurement Input, Marketability Discount [Member] Measurement Input Discount Rate [Member] Measurement input cost of equity estimate. Measurement Input, Cost of Equity Estimate [Member] Measurement Input Cost Of Equity Estimate [Member] Measurement Input, Expected Term [Member] Measurement Input Expected Term [Member] Scenario Statement Scenario [Axis] Scenario, Unspecified Scenario Unspecified [Domain] Non IPO based scenario. Non-IPO Based Scenario [Member] Non I P O Based Scenario [Member] IPO based scenario. IPO Based Scenario [Member] I P O Based Scenario [Member] Temporary Equity [Line Items] Temporary Equity [Line Items] Convertible preferred stock Effective date of restated certificate of incorporation. Effective Date of restated certificate of incorporation Effective Date Of Restated Certificate Of Incorporation Dividend rate, percentage Preferred Stock Dividend Rate Percentage Stock issued during period, shares, new issues Adjustments to additional paid in capital, stock issued, issuance costs Adjustments To Additional Paid In Capital Stock Issued Issuance Costs Proceeds from issuance of redeemable convertible preferred stock Proceeds From Issuance Of Redeemable Convertible Preferred Stock Convertible notes payable Convertible Notes Payable Debt instrument, convertible, conversion price Debt Instrument Convertible Conversion Price1 Convertible preferred stock, shares issued upon conversion Convertible Preferred Stock Shares Issued Upon Conversion Disclosure of stock issued during period shares additional issues. Stock issued during period shares additional issues Stock Issued During Period Shares Additional Issues Number of shares equal to number of shares it previously purchased for cash percentage. Number of shares equal to number of shares previously purchased for cash percentage Number Of Shares Equal To Number Of Shares Previously Purchased For Cash Percentage Convertible preferred stock, settlement terms Convertible Preferred Stock Settlement Terms Represents Convertible Preferred Stock Additional Shares Authorized For Issuance. Convertible preferred stock additional shares authorized for issuance Convertible Preferred Stock Additional Shares Authorized For Issuance Number Of Preferred Stock Shareholders Represents Proceeds From Issuance Of Redeemable Convertible PreferredStock Before Issuance Cost. Represents Preferred Stock Redemption Period. Represents Amortization Of Stock Issuance Costs. Unaccreted discount. Number of preferred stock shareholders Number Of Preferred Stock Shareholders Shares issued, price per share Shares Issued Price Per Share Proceeds from issuance of redeemable convertible preferred stock before issuance cost Proceeds From Issuance Of Redeemable Convertible Preferredstock Before Issuance Cost Preferred stock, discount on shares Preferred Stock Discount On Shares Preferred stock redemption period Preferred Stock Redemption Period Amortization of stock issuance costs Amortization Of Stock Issuance Costs Unaccreted discount Unaccreted Discount Unaccreted premium. Preferred stock redemption premium Preferred Stock Redemption Premium Preferred stock, accretion of redemption discount Preferred Stock Accretion Of Redemption Discount Unaccreted premium Unaccreted Premium Stock issued during period, value, new issues Represents Accrued Interest On Debt. Debt instrument, face amount Debt Instrument Face Amount Accrued interest on debt Accrued Interest On Debt Debt instrument, convertible, number of equity instruments Debt Instrument Convertible Number Of Equity Instruments Number of additional investors. Number of additional investors Number Of Additional Investors Preferred stock, value, outstanding Preferred Stock Value Outstanding Represents Preferred Stock Value Outstanding At Fair Value. Preferred stock value outstanding at fair value Preferred Stock Value Outstanding At Fair Value Preferred stock, share, outstanding Preferred Shares Authorized Preferred Shares Issued Preferred Shares Outstanding Carrying Value Liquidation Preference Preferred Stock Liquidation Preference Value Common Shares Issuable Upon Conversion Accrued dividends converted to common share. Dividends payable Dividends Payable Current And Noncurrent Accrued dividends converted into common share Accrued Dividends Converted To Common Share Represents Percentage Of Preferred Shareholders Remaining Outstanding. Percentage of preferred shareholders remaining outstanding Percentage Of Preferred Shareholders Remaining Outstanding Fair value inputs probability factor. Fair value inputs estimated market discount rate. Pre money valuation cost of equity rate. Estimated time to initial public offering date. Fair value estimates of common stock discount rate. Fair value estimates of common stock discount rate Fair Value Estimates Of Common Stock Discount Rate Probability factor Fair Value Inputs Probability Factor Fair value marketability discount rate Fair Value Inputs Estimated Market Discount Rate Expected pre-money valuation Pre Money Valuation Cost Of Equity Rate Estimated time to IPO date Estimated Time To Initial Public Offering Date Fair value of preferred stock share price. Risk free rate of preferred stock. Volatility rate of preferred stock. Weighted estimate of time to liquidity event of preferred stock. Fair value of preferred stock share price Preferred Stock Share Price At Fair Value Risk free rate of preferred stock Preferred Stock Risk Free Rate Volatility rate of preferred stock Preferred Stock Volatility Rate Weighted estimate of time to liquidity event of preferred stock Preferred Stock Weighted Estimated Maturity Term Represents Accretion of financing costs Repesents fair value adjusment on preferred stock value. The disclosure of Accretion of investor rights Unaccreted financing costs. Unaccreted investor rights. Payments of financing costs Payments Of Financing Costs Accretion of financing costs Accretion Of Financing Costs Unaccreted financing costs Unaccreted Financing Costs Fair value adjustment on preferred stock value Fair Value Adjustment On Preferred Stock Value Accretion of investor rights Accretion Of Investor Rights Unaccreted investor rights Unaccreted Investor Rights Representsinflow of stock financing costs Proceeds from series A preferred stock financing Proceeds From Series A Preferred Stock Financing Conversion ratio of preferred stock to common stock Stockholders Equity Note Stock Split Conversion Ratio1 Represents of share holders conversion of preferred stock outstanding Percentage conversion of preferred stock outstanding Percentage Conversion Of Preferred Stock Outstanding Common stock, voting rights Common Stock Voting Rights 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 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 exercise in the period Share based compensation options forfeited in the period Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Share based compensation options expired in the period Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period Number of Option Shares Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Roll Forward Outstanding, Beginning Granted Forfeited Expired 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: Dividends accrued on redeemable convertible preferred stock Plus: Accretion of 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 The amount represents payment of upfront license fee. Milestone payment. 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