Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Accruals and reserves Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities 2024 Public Offering Public Stock Offering [Member] Public Stock Offering Statistical Measurement [Domain] Statistical Measurement [Domain] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Award Timing Predetermined Award Timing Predetermined [Flag] Entity File Number Entity File Number Additional Paid in Capital Additional Paid-in Capital [Member] Tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Amount Non-cash lease expense Non-Cash Lease Expense Non-Cash Lease Expense Weighted average price of common stock, triggering warrants callable (in USD per share) Class Of Warrant Or Right, Callable, Threshold Volume Weighted Average Stock Price Trigger Class Of Warrant Or Right, Callable, Threshold Volume Weighted Average Stock Price Trigger Tabular List, Table Tabular List [Table Text Block] Leases [Abstract] Additions for tax positions taken in a prior year Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Recently Adopted Accounting Standards and Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Maximum threshold percentage of outstanding common stock available for conversion Debt Instrument, Convertible, Maximum Threshold Percentage Of Common Stock, Shares Outstanding Debt Instrument, Convertible, Maximum Threshold Percentage Of Common Stock, Shares Outstanding Research & Development Tax Credits Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Number of warrants outstanding (in shares) Class of Warrant or Right, Outstanding Net loss per share attributable to shareholders - basic (in USD per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Facilities and other support costs Facilities And Other Support Costs Facilities And Other Support Costs Stock-based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost Changes in Unrecognized Tax Benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Percent Subsidiary or Equity Method Investee, Sale of Stock, Type [Table] Subsidiary or Equity Method Investee, Sale of Stock, Type [Table] Total deferred tax assets Deferred Tax Assets, Gross Other comprehensive income Other Comprehensive Income (Loss), Net of Tax Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Threshold percentage of convertible debt stock price trigger Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Advance payment amount Sale Of Stock, Agreement To Sell, Advance Payment Amount Sale Of Stock, Agreement To Sell, Advance Payment Amount Other Other Assets, Miscellaneous, Noncurrent Adjustment to Compensation, Amount Adjustment to Compensation Amount Basis of Consolidation Consolidation, Policy [Policy Text Block] Inhaled mucosal vaccine platform Technology Pipeline, Inhaled Mucosal Vaccine Platform [Member] Technology Pipeline, Inhaled Mucosal Vaccine Platform Lease liabilities Deferred Tax Assets, Lease Liability Deferred Tax Assets, Lease Liability Stock options Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Expired in period, intrinsic value Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Expirations In Period, Intrinsic Value Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Expirations In Period, Intrinsic Value Conversion ratio (in shares) Preferred Stock, Convertible, Conversion Ratio Cash, Cash Equivalents, and Restricted Cash Cash and Cash Equivalents, Policy [Policy Text Block] Percent Effective Income Tax Rate Reconciliation, Percent [Abstract] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Total stockholders' equity Beginning balance Ending balance Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Stock-based compensation expense Share-Based Payment Arrangement, Expense Schedule of Expected Useful Lives by Major Asset Schedule of Major Components of Property and Equipment Property, Plant and Equipment [Table Text Block] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Issuance of common stock for capital raises, net (in shares) Stock Issued During Period, Shares, New Issues Current assets Assets, Current [Abstract] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Total liabilities and stockholders' equity Liabilities and Equity Earnings Per Share Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Number of Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Liabilities and stockholders' equity Liabilities and Equity [Abstract] State and local State and Local Jurisdiction [Member] Other (expense) income : Other Nonoperating Income (Expense) [Abstract] Cover page. Cover [Abstract] Forfeited Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Aggregate Intrinsic Value, Forfeitures In Period Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Aggregate Intrinsic Value, Forfeitures In Period Maximum Maximum [Member] Exercisable (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price General and administrative General and Administrative Expense [Member] Schedule of Supplemental Balance Sheet Information Related to Leases Supplemental Balance Sheet Information, Leases [Table Text Block] Tabular disclosure of balance sheet information related to leases. Accounting Policies [Abstract] Accounting Policies [Abstract] Schedule of Future Minimum Base Rent Payments Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Treasury Stock Treasury Stock, Common [Member] OCU400 Technology Pipeline, OCU400 [Member] Technology Pipeline, OCU400 Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Total lease liabilities Present value of minimum lease payments Operating Lease, Liability Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Series B Convertible Preferred Stock Series B Preferred Stock [Member] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Automatic increase in shares to be issued Share-Based Compensation Arrangement By Share-Based Payment Award, Automatic Increase In Shares To Be Issued, Percentage Share-Based Compensation Arrangement By Share-Based Payment Award, Automatic Increase In Shares To Be Issued, Percentage Total Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Other non-current liabilities Other Liabilities, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Proceeds from issuance of debt Net proceeds from debt Proceeds from Issuance of Debt Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Schedule of PSU Activity Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Current portion of long term debt Less: current portion of long term debt Long-Term Debt, Current Maturities Company Selected Measure Amount Company Selected Measure Amount 2028 Lessee, Operating Lease, Liability, to be Paid, Year Three Cash Cash Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Expired (in USD per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Name Measure Name Series B convertible preferred stock reacquisition (in shares) Stock Issued During Period Shares, Termination Of Convertible Securities Stock Issued During Period Shares, Termination Of Convertible Securities Domestic Income (Loss) from Continuing Operations before Income Taxes, Domestic Schedule of Stock-based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Operating lease obligations Current lease obligations Operating Lease, Liability, Current Nontaxable or Nondeductible Items Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus OCU410 and OCU410ST Technology Pipeline, OCU410 and OCU410ST [Member] Technology Pipeline, OCU410 and OCU410ST Award Timing Method Award Timing Method [Text Block] Litigation Case [Domain] Litigation Case [Domain] Furniture and fixtures Furniture and Fixtures [Member] Deferred revenue Contract with Customer, Liability, Noncurrent Award Type [Axis] Award Type [Axis] Carrying value, net Long-Term Debt Total assets Assets Stock-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Agreement to sell, price per share (in USD per share) Sale Of Stock, Agreement To Sell, Price Per Share Sale Of Stock, Agreement To Sell, Price Per Share Trading Symbol Trading Symbol 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Vested (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Stockholder Derivative Lawsuit Stockholder Derivative Lawsuit [Member] Stockholder Derivative Lawsuit Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Changes in valuation allowances Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Income Taxes Income Tax, Policy [Policy Text Block] Issuance of common stock for stock option exercises and restricted stock unit vesting, net (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Total accrued expenses and other current liabilities Accrued Liabilities and Other Liabilities Entity Address, City or Town Entity Address, City or Town Cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Research & Development Tax Credits Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent Effect of changes in exchange rate on cash and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Deferred tax assets, net of valuation allowance Deferred Tax Assets, Net of Valuation Allowance Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount RSUs Restricted Stock Units (RSUs) [Member] Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] General Use Facilities General Use Facilities [Member] General Use Facilities Reductions for tax positions taken in the prior year due to settlement Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Entity Emerging Growth Company Entity Emerging Growth Company Research and development expense (excluding acquired in process cost) Research and Development Expense (Excluding Acquired in Process Cost) 2028 Long-Term Debt, Maturity, Year Three Warrants Warrant [Member] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Upfront payment Payment For License Agreement Payment For License Agreement Right-of-use assets related to operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Beginning balance (in shares) Ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Document Financial Statement Error Correction Flag Document Financial Statement Error Correction [Flag] State and Local Income Tax, Net of Federal (National) Income Tax Effect State income tax, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Amount Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Common stock, shares outstanding (in shares) Common stock, beginning balance (in shares) Common stock, ending balance (in shares) Common Stock, Shares, Outstanding Non-cash interest expense Non-Cash Interest Expense Amount of non-cash interest expense during the period. 2029 and thereafter Long-Term Debt, Maturity, Year Four And Thereafter Long-Term Debt, Maturity, Year Four And Thereafter Schedule of Company's losses before income taxes and provision (benefit) for income taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Chief Executive Officer Chief Executive Officer [Member] Plan Name [Axis] Plan Name [Axis] Property and Equipment, Net Property, Plant and Equipment, Policy [Policy Text Block] PEO PEO [Member] Lease Contractual Term [Domain] Lease Contractual Term [Domain] Number of consolidated lawsuits pending resolution Loss Contingency, Pending Claims, Number Debt Financing Transaction Debt Financing Transaction [Member] Debt Financing Transaction Interest income Interest expense Investment Income, Interest Valuation allowance increase (decrease) Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Changes in assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Changes in valuation allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Accumulated Deficit Retained Earnings [Member] Number of equity compensation plans Number Of Equity Compensation Plans Number Of Equity Compensation Plans Prepaid expenses and other current assets Total prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Number of Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Schedule of Major Components of Accrued Expenses and Other Current Liabilities Schedule of Accrued Liabilities [Table Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Share-Based Payment Arrangement [Abstract] Cash and restricted cash at beginning of period Cash and restricted cash at end of period Total cash and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Provision (benefit) for income taxes Effective tax rate Income Tax Expense (Benefit) Variable interest rate on debt Debt Instrument, Basis Spread on Variable Rate Sale of Stock [Domain] Sale of Stock [Domain] Accrued expenses and other current liabilities Accrued Expenses And Other Liabilities, Current Accrued Expenses And Other Liabilities, Current Convertible preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] COVAXIN Technology Pipeline, COVAXIN [Member] Technology Pipeline, COVAXIN Product and Service [Domain] Product and Service [Domain] Total property and equipment Property, Plant and Equipment, Gross Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Start-up costs Deferred Tax Assets, Start-Up Costs Deferred Tax Assets, Start-Up Costs Supply agreement, number of doses Supply Agreement, Number Of Vaccine Doses Supply Agreement, Number Of Vaccine Doses Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Proceeds from stock options exercised Proceeds from Stock Options Exercised City Area Code City Area Code Collaborative Arrangements and Revenue Recognition Collaborative Arrangement And Revenue From Contract With Customer [Policy Text Block] Collaborative Arrangement And Revenue From Contract With Customer Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Weighted average remaining contractual life, vested and expected to vest Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Intellectual property Deferred Tax Assets, Goodwill and Intangible Assets Other Adjustments Other, net Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Beginning balance unvested (in shares) Ending balance unvested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Class of Warrant or Right [Line Items] Class of Warrant or Right [Line Items] Cash flows from investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash used in operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Useful life Property, Plant and Equipment, Useful Life Convertible preferred stock, par value (in USD per share) Preferred Stock, Par or Stated Value Per Share Subsequent Event Subsequent Event [Member] Schedule of Weighted Average Assumptions Utilized in Fair Value Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Total lease cost Lease, Cost Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Schedule of Components of Lease Expense Lease, Cost [Table Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Depreciation expense Depreciation Vested and expected to vest (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Lease Contractual Term [Axis] Lease Contractual Term [Axis] Equity Components [Axis] Equity Components [Axis] GMP facility GMP Facility [Member] GMP Facility Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Unrecognized Tax Benefits Reconciliation Unrecognized Tax Benefits [Roll Forward] Auditor Name Auditor Name Nature of Business Nature of Operations [Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of reportable segments Number of Reportable Segments Expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Corporate headquarters Corporate Headquarters [Member] Corporate Headquarters Organization, Consolidation And Presentation Of Financial Statements [Line Items] Organization, Consolidation And Presentation Of Financial Statements [Line Items] Organization, Consolidation And Presentation Of Financial Statements [Line Items] Warrant expiration date Warrants and Rights Outstanding, Term Other Performance Measure, Amount Other Performance Measure, Amount Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Schedule of Restricted Cash Restrictions on Cash and Cash Equivalents [Table Text Block] Payments of debt issuance costs Payments of Debt Issuance Costs Entity Address, State or Province Entity Address, State or Province Marketable Securities Marketable Securities, Policy [Policy Text Block] Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Security, Excluded EPS Calculation [Table] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Total current liabilities Liabilities, Current Amount Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Over-Allotment Option Over-Allotment Option [Member] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Individual: Individual [Axis] Restricted cash Restricted Cash Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Shares authorized (in shares) Common Stock And Preferred Stock, Shares Authorized Common Stock And Preferred Stock, Shares Authorized Other Other Assets, Current Document Annual Report Document Annual Report Research and development Research and Development Expense [Member] Net cash (used in) provided by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Document Fiscal Year Focus Document Fiscal Year Focus EB-5 Loan Agreement EB-5 Loan Agreement [Member] EB-5 Loan Agreement Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Long-Term Operating Lease Right-of-use assets, net Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Depreciation and amortization expense Other Depreciation and Amortization Capitalization of research and development expense Deferred Tax Asset, In-Process Research and Development Effective tax rate Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Research and development personnel costs Research And Development Personnel Costs Research And Development Personnel Costs Granted Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Aggregate Intrinsic Value, Granted Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Aggregate Intrinsic Value, Granted Operating lease cost Operating Lease, Cost Plan Name [Domain] Plan Name [Domain] Unrecognized compensation expense related to options outstanding, weighted average period for expense to be recognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Valuation allowance Deferred Tax Assets, Valuation Allowance Deferred revenue Deferred Tax Assets, Deferred Income Equity [Abstract] Equity [Abstract] Options exercisable, intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Stock-Based Compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Segment Reporting Segment Reporting Disclosure [Text Block] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Option period purchase additional shares in underwriting agreement Sale Of Stock, Over-Allotment Option, Period Sale Of Stock, Over-Allotment Option, Period Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Class of Warrant or Right [Table] Class of Warrant or Right [Table] RECENT ACCOUNTING PRONOUNCEMENTS New Accounting Pronouncements or Change in Accounting Principle [Line Items] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Series B Convertible Preferred Stock reacquisition Stock Issued During Period Value, Termination Of Convertible Securities Stock Issued During Period Value, Termination Of Convertible Securities Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Leases Lessee, Leases [Policy Text Block] NIAID Project NextGen clinical trial initiative Clinical Trial Initiative, Project NextGen, Amount Clinical Trial Initiative, Project NextGen, Amount Granted in period, intrinsic value Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Intrinsic Value Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Intrinsic Value Other assets Total other assets Other Assets, Noncurrent Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of Maturities of Long-Term Debt Schedule of Maturities of Long-Term Debt [Table Text Block] Proceeds from sale of shares issued Proceeds from sale of shares issued under agreement Sale of Stock, Consideration Received on Transaction Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Supplemental disclosure of non-cash investing and financing transactions: Supplemental Cash Flow Elements [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Foreign Tax Effects Permanent Differences Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Range of expected stock price volatility, maximum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Contract liability Deferred revenue relating to collaborative arrangements Contract with Customer, Liability, Current Nontaxable or Nondeductible Items Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount [Abstract] Segments [Axis] Segments [Axis] Warrant exercise price (in USD per share) Weighted-average exercise price of outstanding warrants (in USD per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Agreement to sell, number of shares issued in transaction (in shares) Sale of Stock, Agreement To Sell, Number Of Shares Issued In Transaction Sale of Stock, Agreement To Sell, Number Of Shares Issued In Transaction Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Class of Stock [Domain] Class of Stock [Domain] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] U.S. Federal Statutory Tax Rate Expected provision at statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Subsequent Event Type [Axis] Subsequent Event Type [Axis] Stock-Based Compensation Share-Based Payment Arrangement [Text Block] Assets Assets [Abstract] Long term debt, net Long term debt, net of current portion Long-Term Debt, Excluding Current Maturities Underlying Security Market Price Change Underlying Security Market Price Change, Percent Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Forfeited (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Fair Value Measurements Fair Value Disclosures [Text Block] Deferred tax assets: Deferred Tax Assets, Net [Abstract] Stockholders' equity Equity, Attributable to Parent [Abstract] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Vesting percentage of awards granted Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Entity Address, Address Line One Entity Address, Address Line One Research and development Expense incurred Total research and development Research and Development Expense 2014 Plan 2014 Ocugen OpCo, Inc. Stock Option Plan [Member] 2014 Ocugen OpCo, Inc. Stock Option Plan Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] Interest rate Debt Instrument, Interest Rate, Stated Percentage Warrants Warrants [Text Block] Warrants Operating lease obligations, less current portion Non-current lease obligations Operating Lease, Liability, Noncurrent Entity Voluntary Filers Entity Voluntary Filers Issuance of common stock for Avenue Capital agreement Stock Issued Fair Value as of Grant Date Award Grant Date Fair Value Property, Plant and Equipment [Abstract] Entity Registrant Name Entity Registrant Name Collaborative arrangement revenue Collaborative Arrangements Collaborative Arrangement [Member] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Research and development Research And Development Expenses, Current Carrying value as of the balance sheet date of obligations incurred through that date and payable for research and development. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Operating loss carryforwards Operating Loss Carryforwards Aggregate Intrinsic Value (In Thousands) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest [Abstract] Changes in Unrecognized Tax Benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Schedule of Debt Schedule of Long-Term Debt Instruments [Table Text Block] Weighted average expected stock price volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Expired Capital Loss Effective Income Tax Rate Reconciliation, Expired Capita Loss, Percent Effective Income Tax Rate Reconciliation, Expired Capita Loss, Percent Units granted (in shares) Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Title and Position [Domain] Title and Position [Domain] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Unrecognized compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Forfeited in period, intrinsic value Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Forfeitures In Period, Intrinsic Value Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Forfeitures In Period, Intrinsic Value Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Registered Direct Offering Warrant Registered Direct Offering Warrant [Member] Registered Direct Offering Warrant 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Number of operating segments Number of Operating Segments Beginning balance Ending balance Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding Borrowing increments Line Of Credit Facility, Borrowing Amount In Each Draw The amount of borrowing that can be borrowed each draw from a line of credit Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Weighted average remaining contractual life Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Proceeds from secured lines of credit Proceeds from Secured Lines of Credit Machinery and equipment Machinery and Equipment [Member] Granted (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Tax Credits Effective Income Tax Rate Reconciliation, Tax Credit, Percent [Abstract] Long-Term Deposits Deposits Assets, Noncurrent Payment of EB-5 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