Debt Securities, Available-for-Sale [Abstract] Marketable securities: Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Document Transition Report Document Transition Report Money Market Funds [Member] Money market funds Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Vesting period of awards Debt Securities, Available-for-Sale Estimated Fair Value Debt Securities, Available-for-sale, Total Minimum percentage of six-month product revenue forecast to satisfy minimum cash balance debt covenant. Minimum cash balance requirement to be met as a percentage of six-month product revenue against forecast Debt covenant percentage of product revenue against forecast Fair Value, Inputs, Level 1 [Member] Level 1 Public offering. Public Offering [Table] Public Offering [Table] Fair Value Disclosures [Text Block] FAIR VALUE MEASUREMENTS Property, Plant and Equipment, Useful Life Estimated useful lives of assets Royalties Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contract with Customer, Excluding Assessed Tax, Total Government sponsored enterprise securities due in less than one year. Government Sponsored Enterprise Securities Due In Less Than One Year [Member] Government-sponsored enterprise securities (due in less than one year) At Market Issuance Sales Agreements. At Market Issuance Sales Agreements [Line Items] At Market Issuance Sales Agreements [Line Items] Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Less Than 12 Months - Estimated Fair Value Minimum cash balance as a percentage of loan amount outstanding Debt covenant minimum cash balance percentage of loan amount Percentage of loan amount outstanding to be held as minimum cash balance under debt covenant. Represents information pertaining to unsecured promissory note (generally negotiable) that provides institutions with short-term funds ), due in less than one year. Commercial Paper Due In Less Than One Year [Member] Commercial paper (due in less than one year) Subsequent Events [Text Block] SUBSEQUENT EVENT Municipal securities due in one to two years member. Municipal Securities Due In One To Two Years [Member] Municipal securities (due in one to two years) Stock Issued During Period, Shares, Issued for Services Stock-based compensation related to issuance of common stock and options in exchange for services (in shares) Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of financial instruments measured at fair value on recurring basis Operating Lease, Liability, Noncurrent Noncurrent operating lease liabilities Debt Securities, Available-for-Sale [Table] Debt Securities Available For Sale [Table] Two Thousand Twenty Public Offering Of Common Stock And Warrants [Member] 2020 Public Offering of Common Stock and Warrants 2020 Public Offering of Common Stock and Warrants. Option Two Min Cash Debt Covenant [Member] Option Two Min Cash Debt Covenant [Member] Option two min cash debt covenant. Less: unamortized debt discounts and issuance costs Debt discount under second amendment Debt Instrument, Unamortized Discount Debt Instrument, Unamortized Discount, Total Balance Sheet Location [Axis] Assets, Current Total current assets Vesting [Domain] Liabilities and Equity Total liabilities and stockholders' equity Minimum cash covenant required upon certain licensing transactions being executed. Debt Covenant Min Cash Upon Licensing Transaction Debt covenant minimum cash balance upon licensing transaction Entity Address, State or Province Entity Address, State or Province Litigation Case [Domain] U.S. Treasury securities - due in 1 to 2 years US Treasury securities due in one to two years member. U S Treasury Securities Due In One To Two Years [Member] U.S. Treasury securities (due in one to two years) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss Comprehensive loss Tranche B [Member] Tranche B [Member] Tranche B [Member] Trading Symbol Trading Symbol Debt Securities, Available-for-Sale [Line Items] Schedule Of Available For Sale Securities [Line Items] 2025 Long-Term Debt, Maturity, Year Two Prepaid Expense and Other Assets, Current Prepaid and other current assets At The Market Offering Member. At The Market Offering [Member] At The Market Offering Municipal securities due in less than one year. Municipal Securities Due In Less Than One Year [Member] Municipal securities (due in less than one year) Public offering. Public Offering [Line Items] Public Offering [Line Items] Schedule of Long-Term Debt Instruments [Table] Debt Instrument [Table] Litigation Settlement, Amount Awarded to Other Party Litigation settlement, amount Common stock, shares reserved for future issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Gain (Loss) Less: current portion of debt Long-Term Debt, Current Maturities Less: current portion of debt Long-term Debt, Current Maturities, Total Number of new shares issued during the period in connection with exercise of warrants. Issuance Of Common Stock In Connection With Warrant Exercise Shares Issuance of common stock in connection exercise of warrants (in shares) Increase (Decrease) in Operating Assets Current and noncurrent assets Increase (Decrease) in Operating Assets, Total Entity Address, City or Town Entity Address, City or Town Remainder of 2023 Long-Term Debt, Maturity, Remainder of Fiscal Year Cost method investment ownership percentage. Cost Method Investment Ownership Percentage Cost method investments ownership percentage Class of Warrant or Right, Outstanding Common stock outstanding warrants to purchase Summary of Investment Holdings [Line Items] Debt Disclosure [Text Block] DEBT Subsequent Event [Member] Subsequent Event Subsequent Event Type [Axis] Additional Paid-in Capital [Member] Additional Paid-In Capital Net product revenue period Net Product Revenue Period Net product revenue period. Carrying value as of the balance sheet date of obligations incurred through that date and payable for clinical related costs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). 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Statement of Comprehensive Income [Abstract] Scenario [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Entity Central Index Key Entity Central Index Key Class of Warrant or Right, Number of Securities Called by Warrants or Rights Warrant to purchase common stock, shares Plan Name [Domain] Number of new shares of common stock issued during the period in connection with public offering. Share Of Common Stock Issued During Period Shares New Issues Public Offering Issuance of common stock in connection with public offering (in shares) Assets, Fair Value Disclosure, Total Assets, Fair Value Disclosure Total Tranche A [Member] Tranche A [Member] Tranche A [Member] Liabilities, Current Total current liabilities Entity Tax Identification Number Entity Tax Identification Number Other comprehensive income (loss) OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, after Tax OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, after Tax, Total Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Increase (Decrease) in Operating Capital [Abstract] Changes in assets and liabilities: Accrued Liabilities [Member] Accrued Liabilities Payments of Debt Issuance Costs Debt discount and issuance costs for debt financing Debt discount and issuance costs for debt financing Financial Instruments [Domain] Financial Instruments Award Type [Axis] Award Type Cash and Cash Equivalents [Abstract] Included in cash and cash equivalents: Class of Warrant or Right [Line Items] Plan Name [Axis] Assets Total assets Operating Lease, Right-of-Use Asset Operating leases, right-of-use assets Entity Registrant Name Entity Registrant Name Net cash proceeds from public offering after deducting underwriting discount and other offering expenses Proceeds from Issuance or Sale of Equity, Total Proceeds from Issuance or Sale of Equity Retained Earnings (Accumulated Deficit) Accumulated deficit Retained Earnings (Accumulated Deficit), Total Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Ending Balance Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Less Than 12 Months - Gross Unrealized Losses Retained Earnings [Member] Accumulated Deficit Class of Stock [Axis] Prepayment charge assessed upon debt prepayment occurring 36 months after June 30, 2022 under second amendment. Charge for prepayment occurring 36 months after effective date Dollar prepayment charge 36 months after effective date Represents information pertaining to debentures, bonds and other debt securities issued by US government sponsored entities (GSEs), for example, but not limited to, Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB). Excludes debt issued by the Government National Mortgage Association (GNMA or Ginnie Mae, due in less than one year. U S Government Sponsored Enterprises Debt Securities Due In Less Than One Year [Member] Government-sponsored enterprise securities (due in less than one year) Minimum [Member] Minimum Forecast [Member] Scenario Forecast [Member] Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Expected volatility range, minimum (as a percent) Equity Component [Domain] Equity Component Employee Stock Option [Member] Stock Options 2018 Inducement Award Plan Two Thousand And Eighteen Inducement Award Plan [Member] Two thousand and eighteen inducement award plan. Amortization of debt issuance costs/debt discounts Amortization of Debt Issuance Costs and Discounts Amortization of Debt Issuance Costs and Discounts, Total Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology [Abstract] Assumptions used to estimate fair value of awards Less: unamortized debt discounts and issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net, Total 2022 pre-funded warrant. Two Thousand Twenty Two Pre Funded Warrant [Member] 2022 Pre-Funded Warrant Measurement Frequency [Axis] Measurement Frequency Debt Disclosure [Abstract] Entity Current Reporting Status Entity Current Reporting Status Unrealized Gain (Loss), Foreign Currency Transaction, before Tax Gain (loss) related to foreign currency translation Debt, Policy [Policy Text Block] Debt Issuance Costs and Debt Discounts Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Assets [Abstract] ASSETS Hercules and Silicon Valley Bank. member. Hercules And Silicon Valley Bank [Member] Hercules and Silicon Valley Bank [Member] Revenue from Contract with Customer [Policy Text Block] Revenue Recognition First date to available to drawdown any amount under a tranche. Borrowing Available Start Date Start date to borrow under a tranche for a debt instrument Common Stock, Value, Issued Common stock Common Stock, Value, Issued, Total Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Ending Balance Shareholders' Equity and Share-Based Payments [Text Block] STOCKHOLDERS' EQUITY Represents the aggregate offering price for which the entity may elect to issue and sell shares of its common stock under the sales agreement. Common Stock Aggregate Offering Price Aggregate offering price of common stock Accrued Liabilities, Current Accrued liabilities Accrued liabilities Current Fiscal Year End Date Current Fiscal Year End Date Share-Based Payment Arrangement, Noncash Expense Stock-based compensation for employees and directors Share-based Payment Arrangement, Noncash Expense, Total Operating Income (Loss) Loss from operations Debt issuance costs Debt Issuance Costs, Gross Debt instrument unaccrued end of term charge. Debt Instrument Unaccrued End Of Term Charge Less: unaccrued end of term charge Research and Development Expense [Member] Research and development Represents the gross unrealized losses for cash and cash equivalents. Cash And Cash Equivalents Unrealized Losses Gross Unrealized Losses Lessee, Leases [Policy Text Block] Leases Accounts Payable and Accrued Liabilities Disclosure [Text Block] ACCRUED LIABILITIES Debt instrument minimum cash balance percentage. Debt Instrument Cash Balance Percentage Debt instrument cash balance percentage. Share-Based Payment Arrangement, Expense Stock-based compensation expense included in operating expenses Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Expected volatility range, maximum (as a percent) Aggregate value of term loan, including accrued interest payable and end of term charge. Long Term Debt Gross Total At Market Issuance Sales Agreements. At Market Issuance Sales Agreements [Table] At Market Issuance Sales Agreements [Table] Equity Securities, FV-NI, Unrealized Gain (Loss) Change in fair value of equity investment Equity Securities, FV-NI, Unrealized Gain (Loss), Total Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table] Earnings Per Share, Policy [Policy Text Block] Net Loss Per Share Other Nonoperating Income (Expense) Other income and (expense), net Other Nonoperating Income (Expense), Total Public offering price per share Sale of Stock, Price Per Share Combined public offering price per share of pre-funded warrant and accompanying stock purchase warrant Market capitalization amount Market Capitalization Amount Market capitalization amount. Operating Expenses [Abstract] Operating expenses: Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction, Total Subsequent Events [Abstract] Issuance of Stock and Warrants for Services or Claims Stock-based compensation for services by non-employees US Government-sponsored Enterprises Debt Securities [Member] Government-sponsored enterprise securities Commitments and Contingencies Disclosure [Abstract] Other Accrued Liabilities, Current Other Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Gains Minimum market capitalization requirement for option Market cap minimum to use option two Minimum market capitalization required for this option to be available to meet the minimum cash balance debt covenant. Represents the percentage of maximum commission rate, based on gross proceeds of sale price per share of common stock sold through sales agent under the sales agreement. Maximum Commission Rate Maximum commission rate (as a percent) Equity, Attributable to Parent [Abstract] Stockholders' equity: Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value on a Recurring Basis Investment Owned, at Fair Value, Ending Balance Investment Owned, at Fair Value, Beginning Balance Investment Owned, Fair Value Fair value of equity investment Loss Contingency Nature [Axis] Line of Credit Facility, Maximum Borrowing Capacity Maximum borrowing capacity under term loan Stock Purchase Warrants Stock Purchase Warrants [Member] Stock purchase warrants. Loss Contingencies [Table] Litigation Case [Axis] Equity impact of the value of stock issued in connection with exercise of warrants during the period. Issuance Of Common Stock In Connection With Warrant Exercise Value Issuance of common stock in connection with exercise of warrants Accounting Policies [Abstract] Minimum amount allowed to be prepaid under debt instrument. Debt Instrument Minimum Prepayment Amount Minimum amount of prepayment allowed under debt instrument Scenario [Axis] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Stock-Based Compensation Common stock, increase in option reserves (in shares) Common stock, increase in shares reserved for future issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Other Increases (Decreases) in Period Litigation settlement amount paid in cash. Litigation Settlement Amount Paid In Cash Settlement paid in cash by company Basic net loss per share Earnings Per Share, Basic Earnings Per Share, Basic, Total Cash Equivalents, at Carrying Value Amortized Cost Last date to drawdown any amounts under a tranche. Expiry Date Of Tranche Expiration date to borrow under a tranche for a debt instrument Summary of Investment Holdings [Table] Represents the number of months following a change in control when an employee is terminated without cause to be classified as a triggering event for severance payments. Loss Contingency Triggering Event Employee Termination Without Cause Following Change Of Control Period Period within which employee is terminated by entity without cause following a change of control Commitments and Contingencies Commitments and contingencies Income Statement [Abstract] Debt Securities, Available-for-Sale, Current Marketable securities Debt Securities, Available-for-sale, Current, Total Debt Debt, Current Debt, Current, Total Severance plan. Severance Plan [Line Items] Severance Plan Statistical Measurement [Domain] Statistical Measurement Loss Contingencies [Line Items] Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities Cash flows from operations Minimum percentage of net product revenues maintenance period Minimum percentage of net product revenues maintenance period Minimum percentage of net product revenues maintenance period. All Award Types Award Type Document Period End Date Document Period End Date Statistical Measurement [Axis] Statistical Measurement Commitments and Contingencies Disclosure [Text Block] CONTINGENCIES AND UNCERTAINTIES Stockholders' Equity Note [Abstract] Settlement amount to be paid in cash Litigation Settlement Amount to be Paid Litigation settlement amount to be paid. Diluted net loss per share Earnings Per Share, Diluted Earnings Per Share, Diluted, Total Increase (Decrease) in Operating Liabilities Current and noncurrent liabilities Increase (Decrease) in Operating Liabilities, Total Debt Instrument, Name [Domain] Debt Instrument, Name Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV Debt instrument, facility charge Debt Instruments Facility Costs Debt instruments facility costs. Line of credit facility achievement period Line of Credit Facility Achievement Period Line of credit facility achievement period. Loss Contingency, Nature [Domain] Fair Value, Recurring [Member] Recurring basis Additional Paid in Capital, Common Stock Additional paid-in capital Additional Paid in Capital, Common Stock, Beginning Balance Additional Paid in Capital, Common Stock, Ending Balance Future Minimum Payments Under Loan Agreement Schedule of Maturities of Long-Term Debt [Table Text Block] 2020 Pre-funded warrants. Two Thousand Twenty Pre Funded Warrants [Member] 2020 Pre-Funded Warrant Percentage of prepayment amount to be paid upon prepayment under debt instrument. Percentage Of Prepayment Charge Prepayment charge (as a percentage) Underwritten Public Offering [Member] Underwritten Public Offering [Member] Underwritten Public Offering 2022 Public Offering of Common Stock and Warrants Two thousand twenty two public offering of common stock and warrants [Member] Two thousand twenty two public offering of common stock and warrants. Consolidation, Policy [Policy Text Block] Principles of Consolidation Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Cost method investments cost basis. Cost Method Investments Cost Basis Cost method investments cost basis Geron [Member] Geron Corporation [Member] Geron corporation. Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Interactive Data Current Entity Interactive Data Current Debentures, bonds and other debt securities issued by US government sponsored entities (GSEs), for example, but not limited to, Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB). Excludes debt issued by the Government National Mortgage Association (GNMA or Ginnie Mae) due in 1 to 2 years. 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Interest and other receivables. Interest and other receivables member Interest and Other Receivables Organization, Consolidation and Presentation of Financial Statements [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated other comprehensive loss 2018 Equity Incentive Plan 2018 equity incentive plan. Two Thousand And Eighteen Equity Incentive Plan [Member] 2018 Plan Litigation Settlement Amount Paid in Cash or Kind The amount of the settlement to be paid by the company in either cash or shares, at the company's election. Settlement to be paid in cash or shares as elected by company Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Maximum [Member] Maximum Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment after one year or beyond the operating cycle, if longer; and amount of noncurrent assets classified as other. Deposits And Other Assets Noncurrent Deposits and other assets Interest Payable Less: amount representing interest Fair Value, Inputs, Level 3 [Member] Level 3 APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Stock-based compensation for equity-based awards to employees and directors APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total Fair Value, Recurring and Nonrecurring [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net increase in cash, cash equivalents and restricted cash Payables and Accruals [Abstract] 2023 Sales Agreement At Market Issuance Two Thousand And Twenty Three Sales Agreement [Member] At market issuance two thousand and twenty three sales agreement. Purchase warrants. Purchase Warrants [Member] General and Administrative Expense [Member] General and Administrative Expense General and administrative Public Offering Stock Issued During Period Value New Issue Public offering stock issued during period value new issues. Issuance of common stock and pre-funded warrant to purchase common stock in public offering, net of issuance costs Fair Value, by Balance Sheet Grouping [Table Text Block] Schedule of cash equivalents, restricted cash and marketable securities by security type City Area Code City Area Code Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities: Debt Covenant Minimum Cash Balance Debt Covenant Minimum Cash Balance Debt covenant minimum cash balance General and Administrative Expense General and administrative General and Administrative Expense, Total Shares used in computing basic net loss per share Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic, Total Schedule of Share-Based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] Schedule of assumptions used to estimate the fair value of employee stock purchases under the purchase plan Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities: Research and Development Expense, Policy [Policy Text Block] Research and Development Expenses Accrued end of term charge Accrued End Of Term Charges Accrued end of term charges. Statement [Table] Statement [Table] Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of assumptions used to estimate the fair value of service-based stock options granted Document Fiscal Period Focus Document Fiscal Period Focus Severance plan. Severance Plan [Table] Severance Plan [Table] This category includes information about short-term debt securities that are issued by either a domestic or foreign corporate business entity with a date certain promise of repayment and a return to the holder for the time value of money (for example, variable or fixed interest), due in less than one year. Corporate Note Securities Due In Less Than One Year [Member] Corporate notes (due in less than one year) Restricted Cash and Investments [Abstract] Restricted cash: Accrued Professional Fees, Current Professional legal and accounting fees Research and Development Expense (Excluding Acquired in Process Cost) Research and development Statement [Line Items] Statement [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Potential dilutive securities excluded from diluted earnings (loss) per share calculation (in shares) Asset Class [Domain] Asset Class Common Stock [Member] Common Stock Debt Instrument [Line Items] Debt Instrument [Line Items] Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Second Amendment [Member] Second amendment. Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value, Total Cash and Cash Equivalents, at Carrying Value, Beginning Balance Cash and Cash Equivalents, at Carrying Value, Ending Balance Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Summary of allocation of stock-based compensation expense included in operating expenses on condensed consolidated statements of operations related to share-based payment awards Equity investment ownership percentage. Equity Investment Ownership Percentage Equity investment ownership percentage Realized Investment Gains (Losses) Realized investment gains (losses) Realized Investment Gains (Losses), Total Accretion (Amortization) of Discounts and Premiums, Investments Accretion and amortization on investments, net Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Fair Value of Financial Instruments, Policy [Policy Text Block] Fair Value of Financial Instruments Antidilutive Securities, Name [Domain] Antidilutive Securities, Name Available remaining loan committed principal Debt Instrument, Unused Borrowing Capacity, Amount Information by type of sale of the entity's stock. = 2022 Underwritten Public Offering [Member]. Two Thousand Twenty Two Underwritten Public Offering [Member] 2022 Underwritten Public Offering Investment Owned, Balance, Shares Number of shares owned Cover [Abstract] Vesting [Axis] Document Fiscal Year Focus Document Fiscal Year Focus Payments for Legal Settlements Settlement paid in cash by insurers Represents the period following change of control within which an employee is not offered comparable employment (new or continuing) by the entity or its successor or acquired and to be considered as triggering event for severance payments. Loss Contingency Triggering Event Period Following Change Of Control During Which No Comparable Employment Is Offered By Entity Period within which no comparable employment is offered by the entity following a change of control Litigation Settlement Amount, Interest and other receivable Recognized Litigation Settlement Amount, Interest and other receivable Recognized Settlement amount, Interest and other receivable recognized Sale of Stock [Domain] Sale of Stock Interest Payable, Current Interest payable Share-Based Payment Arrangement [Policy Text Block] Stock-Based Compensation Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised Proceeds from issuances of common stock from equity plans Proceeds, Issuance of Shares, Share-based Payment Arrangement, Including Option Exercised, Total Security Exchange Name Security Exchange Name New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncements Carrying value as of the balance sheet of obligations incurred through the date and payable for manufacturing related costs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Accrued Manufacturing Activities Current Manufacturing activities Financial Instrument [Axis] Financial Instrument Option One Min Cash Debt Covenant [Member] Option one min cash debt covenant [Member] Option one min cash debt covenant. Class of Warrant or Right [Table] Entity Emerging Growth Company Entity Emerging Growth Company Amendment Flag Amendment Flag Schedule of Accrued Liabilities [Table Text Block] Schedule of accrued liabilities Restricted cash and cash equivalents gross unrealized losses. Restricted Cash And Cash Equivalents Gross Unrealized Losses Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Gross Unrealized Losses Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Debt Securities, Available-for-Sale, Unrealized Loss Position Total - Estimated Fair Value Class of warrants or right number of securities called by warrants or rights exercised. 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Litigation settlement amount, General and administrative expense recognized Settlement amount, General and administrative expense recognized 2024 Long-Term Debt, Maturity, Year One Restricted Investments, at Fair Value Estimated Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Expected term Debt Securities, Available-for-Sale, Noncurrent Noncurrent marketable securities Entity Address, Address Line Two Entity Address, Address Line Two Entity Small Business Entity Small Business Entity Shell Company Entity Shell Company Loss Contingency, Settlement Agreement, Date Settlement agreement date Investment Type [Axis] Investment Type Nontrade Receivables, Current Interest and other receivables Nontrade Receivables, Current, Total Class of Warrant or Right, Exercise Price of Warrants or Rights Warrant exercise price Represents the gross unrealized gains for cash and cash equivalents. Cash And Cash Equivalents Unrealized Gains Gross Unrealized Gains Certificates of Deposit [Member] Certificate of deposit Revenues [Abstract] Revenues: Commercial Paper [Member] Commercial paper Entity Address, Address Line One Entity Address, Address Line One Cash and Cash Equivalents, Fair Value Disclosure Estimated Fair Value Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Stock-Based Compensation Expense Antidilutive Securities [Axis] Antidilutive Securities Restricted cash and cash equivalents unrealized gains. Restricted Cash And Cash Equivalents Unrealized Gains Gross Unrealized Gains Subsequent Event Type [Domain] Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Issuance costs Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Risk-free interest rate range, minimum (as a percent) Income Statement Location [Axis] Income Statement Location Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Risk-free interest rate range, maximum (as a percent) Represents the period within which employee resigns following a change of control due to material change in terms of employment and to be considered as triggering event for severance payments. Loss Contingency Triggering Event Period Following Change Of Control Within Which Employee Resigns Due To Material Change In Terms Of Employment Period within which employee resigns following a change of control due to material change in terms of employment Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Dividend yield (as a percent) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total Tranche Two [Member] Tranche two. Derivative Stipulation Derivative Stipulation [Member] Derivative stipulation. Fair Value, Inputs, Level 2 [Member] Level 2 Legal settlements Settlement Liabilities, Current Long-Term Debt, Gross Principal amount outstanding under term loan Title of 12(b) Security Title of 12(b) Security Issuance of common stock under equity plans Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture, Total Tranche C [Member] Tranche C [Member] Tranche C [Member] Equity Securities [Member] Equity Investment Increase (Decrease) in Equity Securities, FV-NI Increase (decrease) in fair value of equity investment Investments [Domain] Investments Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities: Tranche Three [Member] Tranche three. Option Three Min Cash Debt Covenant [Member] Option three min cash debt covenant [Member] Option three min cash debt covenant. Litigation settlement amount, Accrued liabilities recognized Litigation settlement amount, Accrued liabilities recognized Litigation settlement amount, Accrued liabilities recognized Segment Reporting, Policy [Policy Text Block] Segment Information Insurance Claims [Member] Insurance Claims US Treasury Securities Due In less than one Year Member. U S Treasury Securities Due In Less Than One Year [Member] U.S. Treasury securities (due in less than one year) Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Restricted Cash 2023 Pre-funded Warrant Two Thousand Twenty Three Pre Funded Warrant Member Two thousand twenty three pre funded warrant. 2023 Public Offering Two Thousand Twenty Three Underwritten Public Offering [Member] 2023 Underwritten Public Offering. Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Total - Gross Unrealized Losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total Loss Contingency [Abstract] Common Stock, Shares, Outstanding Balances (in shares) Balances (in shares) Represents information pertaining to debentures, bonds and other debt securities issued by US government sponsored entities (GSEs), for example, but not limited to, Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB). Excludes debt issued by the Government National Mortgage Association (GNMA or Ginnie Mae), due in one to two years. U S Government Sponsored Enterprises Debt Securities Due In One To Two Years [Member] Government-sponsored enterprise securities (due in one to two years) 2022 Pre-Funded Warrant Two Thousand Twenty Two Pre Funded Warrants [Member] Two thousand twenty two pre-funded warrants. Proceeds from Warrant Exercises Proceeds from exercise of warrants Less: unamortized debt discounts and issuance costs Unamortized Debt Issuance Expense Unamortized debt discount and issuance costs Income Statement Location [Domain] Income Statement Location Restricted Cash and Cash Equivalents, Current Restricted cash Amortized Cost Document Type Document Type Warrants issued shares. Warrants Issued Shares Common stock exercised to warrants purchase Net cash (used in) provided by investing activities Net Cash Provided by (Used in) Investing Activities Document Quarterly Report Document Quarterly Report Share-Based Payment Arrangement [Member] Stock options and warrants excluded from diluted net loss per share calculation due to net loss position Employee Stock Purchase Plan Proceeds from issuance of common stock from public offering and pre-funded warrant, net of paid issuance costs Proceeds from public offering issuance of common stock and warrants. Proceeds From Public Offering Issuance Of Common Stock And Warrants Proceeds from issuance of common stock and warrants in public offering, net of paid issuance costs Net Cash Provided by (Used in) Financing Activities Net cash provided by financing activities Entity Filer Category Entity Filer Category Balance Sheet Location [Domain] Adjustments to additional paid in capital share based compensation requisite service period recognition shares. Adjustments To Additional Paid In Capital Share Based Compensation Requisite Service Period Recognition Shares Stock-based compensation for equity-based awards to employees and directors (in shares) Foreign currency translation adjustment Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Foreign currency translation adjustments Payments to Acquire Marketable Securities Purchases of marketable securities Payments to Acquire Marketable Securities, Total Asset Class [Axis] Asset Class Public offering stock issued during period shares new issues. Public Offering Stock Issued During Period Shares New Issues Issuance of common stock and pre-funded warrant to purchase common stock in public offering, net of issuance costs (in shares) Effect of exchange rates on cash, cash equivalents and restricted cash Amount of increase (decrease) from effect of unrealized losses and exchange rate changes on cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; held in foreign currencies; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Effect Of Unrealized Losses And Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Loss contingency period of current base salary to be paid under severance plan. Loss Contingency Period Of Current Base Salary To Be Paid Under Severance Plan Period of base salary to be considered for severance payments Equity, Attributable to Parent Balances Balances Total stockholders' equity 2022 Stock Purchase Warrants. Two Thousand Twenty Two Stock Purchase Warrants [Member] 2022 Stock Purchase Warrants Net Income (Loss) Net loss Net loss Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity Interest Expense Interest expense Interest Expense, Total This category includes information about short-term debt securities that are issued by either a domestic or foreign corporate business entity with a date certain promise of repayment and a return to the holder for the time value of money (for example, variable or fixed interest), due in one to two years. Corporate Note Securities Due In One To Two Years [Member] Corporate notes (due in one to two years) Depreciation, Depletion, and Amortization [Policy Text Block] Depreciation and Amortization Statement of Financial Position [Abstract] Issuance of common stock under equity plans (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total Amount for second draw down under Tranche A term loan Second Draw Down Under Tranche A Term Loan Remaining amount drawn down under Tranche A term loan Shares used in computing diluted net loss per share Weighted Average Number of Shares Outstanding, Diluted Weighted Average Number of Shares Outstanding, Diluted, Total Credit Facility [Axis] Credit Facility Operating Lease, Right-of-Use Asset, Periodic Reduction Amortization of right-of-use assets Public offering price of common stock per share Shares Issued, Price Per Share Combined public offering price per share of common stock and accompanying stock purchase warrants Reverse stock split ratio for equity investment. Equity Investment Reverse Stock Split Equity investment reverse stock split Debt Securities, Available-for-Sale, Amortized Cost Amortized Cost Use of Estimates, Policy [Policy Text Block] Use of Estimates Stock Issued During Period, Value, Issued for Services Stock-based compensation related to issuance of common stock and options in exchange for services Corporate Note Securities [Member] Corporate notes Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 12 Months or Longer - Gross Unrealized Losses Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share Pre-Funded Warrants Pre Funded Warrants Purchase [Member] Pre-funded warrants purchase. Fair Value Disclosures [Abstract] FAIR VALUE MEASUREMENTS Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV Percentage of net product revenue Percentage of Net Product Revenue Percentage of net product revenue. Measurement Frequency [Domain] Measurement Frequency Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment, Total Reclassification, Comparability Adjustment [Policy Text Block] Prior Period Reclassification Securities class action settlement. Securities Class Action Settlement Securities class action settlement Class Action Stipulation Class Action Stipulation [Member] Class action stipulation. Employee-related Liabilities, Current Accrued compensation and benefits Employee-related Liabilities, Current, Total Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Cash, cash equivalents and restricted cash at the end of the period Cash, cash equivalents and restricted cash at the beginning of the period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Fair Value Method Business Combination Cost Of Acquired Entity Equity Interests Issued And Issuable Fair Value Method