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PEO PEO [Member] Name Trading Arrangement, Individual Name Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Treasury stock, at cost, 4,522 shares of common stock held at June 30, 2024 and March 31, 2024 Treasury Stock, Common, Value Operating costs and expenses Operating Costs and Expenses Maximum milestone payments permitted Revenue Recognition Milestone Method Maximum Milestone Payments Permitted Represents the maximum amount of consideration that can be received during the period for the milestone or milestones. Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] T1 Warrants T1 Warrants [Member] Represents T1 warrants. Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] 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] Related Party, Type [Domain] Related and Nonrelated Parties [Domain] Balances (in shares) Balances (in shares) Shares, Outstanding Cash and cash equivalents: Cash and Cash Equivalents, Fair Value Disclosure Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Fuji Pharma Fuji Pharma [Member] Represents Fuji Pharma. Maximum aggregate offering price Stock Sales Agreement Maximum Aggregate Offering Price The maximum aggregate offering price for common stock in the sales agreement. Local Phone Number Local Phone Number Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Total operating expenses Operating Expenses Other assets Increase (Decrease) in Other Operating Assets Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] PEO Total Compensation Amount PEO Total Compensation Amount Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Weighted Average Exercise Price (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Debt Disclosure [Abstract] Common Stock Common Stock [Member] Measure: Measure [Axis] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Issuance of common stock under Open Market Sale Agreement, net of issuance costs (in shares) Shares issued (in shares) Shares issued (in shares) Stock Issued During Period, Shares, New Issues Entity Emerging Growth Company Entity Emerging Growth Company Warrants Expiring December 9, 2024 Warrants Expiring December 9, 2024 [Member] Represents warrants expiring December 9, 2024. 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LLC Consulting Agreement FitzPatrick Co. LLC Consulting Agreement [Member] FitzPatrick Co. LLC Consulting Agreement Outstanding options under the Company's Amended and Restated 2016 (formerly 2008) Stock Incentive Plan and Amended and Restated 2019 Omnibus Equity Incentive Plan, as amended Amended and Restated 2016 Stock Incentive Plan and Amended and Restated 2019 Omnibus Equity Incentive Plan [Member] Amended and Restated 2016 Stock Incentive Plan and Amended and Restated 2019 Omnibus Equity Incentive Plan Capital Unit [Line Items] Capital Unit [Line Items] Public Offering Public Offering [Member] Represents public offering. Purchases of equipment included in accounts payable Capital Expenditures Incurred but Not yet Paid Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Total current liabilities Liabilities, Current 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] Total compensation cost not yet recognized Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Total assets Assets Expected stock price volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Repayment of note payable Repayments of Notes Payable Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Commitments and contingencies (Note 10) Commitments and Contingencies Contract liabilities: Contract with Customer, Liabilities [Roll Forward] Contract with Customer, Liabilities Termination Date Trading Arrangement Termination Date Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Description of Business Business Description and Basis of Presentation [Text Block] Related Party Transaction [Table] Related Party Transaction [Table] Exercise price per share (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Stock-Based Compensation Share-Based Payment Arrangement [Text Block] Commission on shares sold, percentage Stock Sales Agreement, Commission On Shares Sold Percentage Represents the sales commission percentage. Entity Address, City or Town Entity Address, City or Town Debt Instrument [Axis] Debt Instrument [Axis] Schedule of Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Total stock-based compensation expense Share-Based Payment Arrangement, Expense Unrealized Losses Debt Securities, Available-for-Sale And Cash And Cash Equivalents, Accumulated Gross Unrealized Loss, Before Tax Debt Securities, Available-for-Sale And Cash And Cash Equivalents, Accumulated Gross Unrealized Loss, Before Tax Net loss Net loss Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Total revenues Revenue from Contract with Customer, Including Assessed Tax Granted (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Fair Value Debt Securities, Available-for-Sale And Cash And Cash Equivalents Debt Securities, Available-for-Sale And Cash And Cash Equivalents Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] 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] Entity File Number Entity File Number Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Document Fiscal Year Focus Document Fiscal Year Focus Income Statement [Abstract] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Consulting expenses Consulting Fees Initial Payment Amount of initial payment for consulting fees. Name Forgone Recovery, Individual Name Exercisable, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Document Period End Date Document Period End Date Sale of Stock [Axis] Sale of Stock [Axis] Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Insider Trading Arrangements [Line Items] Unrealized gain on marketable securities available-for-sale, net OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, after Tax Beginning Balance Ending Balance Contract with Customer, Asset, after Allowance for Credit Loss Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Pre-funded Warrants Pre-funded Warrants [Member] Represents pre-funded warrants. Adjustment to Compensation: Adjustment to Compensation [Axis] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Current Reporting Status Entity Current Reporting Status Accumulated Deficit Retained Earnings [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Related Party, Type [Axis] Related and Nonrelated Parties [Axis] Weighted average common shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Executive Category: Executive Category [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Entity Filer Category Entity Filer Category Total fair value of options vested Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Purchases of marketable securities Payments to Acquire Debt Securities, Available-for-Sale Company Selected Measure Name Company Selected Measure Name Sublicense And Other Revenue [Member] Sublicense And Other Revenue