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[Domain] Award Type [Domain] Note Payable Notes Payable to Banks [Member] Assets Assets [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Exercisable (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Statement [Line Items] Statement [Line Items] Deferred revenue Increase (Decrease) in Contract with Customer, Liability Wedbush Wedbush Securities Inc. [Member] Wedbush Securities Inc. 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[Member] Satisfy Success Fee Due to Related Party Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Subsequent Events Subsequent Events, Policy [Policy Text Block] Preferred stock, shares authorized Preferred Stock, Shares Authorized Non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Trading Symbol Trading Symbol Property and equipment, net Property, Plant and Equipment, Net Total operating expenses Operating Expenses Current liabilities: Liabilities, Current [Abstract] Issuance of equity securities, net Shares issued, value Stock Issued During Period, Value, New Issues Grants Receivable and Revenue Recognition Revenue [Policy Text Block] General and administrative General and Administrative Expense Equity, beginning balance (shares) Equity, ending balance (shares) Shares, Outstanding Exercisable, weighted-average exercise price (in usd per share) 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Summary of Stock Option Activity Share-based Payment Arrangement, Option, Activity [Table Text Block] Number of rights per share Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Matching funds requirement Revenue From Grants, Matching Funds Requirement Revenue From Grants, Matching Funds Requirement STOCKHOLDERS' EQUITY Stockholders' Equity Note Disclosure [Text Block] Prepaid clinical trial expenses Prepaid Clinical Trial Expense Prepaid Clinical Trial Expense GRANTS RECEIVABLE Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Employee Stock Option Share-based Payment Arrangement, Option [Member] PREPAID EXPENSES AND OTHER CURRENT ASSETS Other Current Assets [Text Block] Equity [Abstract] Equity [Abstract] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Preferred shares converted to common shares Stock Issued During Period, Value, Issued for Services Statement of Cash Flows [Abstract] Statement of Cash Flows 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Arrangement by Share-based Payment Award, Options, Expirations in Period Measurement Input Type [Axis] Measurement Input Type [Axis] Total stockholders' equity Equity, beginning balance Equity, ending balance Stockholders' Equity Attributable to Parent Expected volatility Measurement Input, Price Volatility [Member] Schedule of Variables Used in Black-Scholes Model Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Preferred shares converted to common shares (shares) Stock Issued During Period, Shares, Issued for Services Common stock, shares issued Common Stock, Shares, Issued Preferred stock, shares issued Preferred Stock, Shares Issued Exercisable, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value 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] 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