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Balance [Axis] Statement [Table] Statement [Table] Proceeds from issuance of warrants Proceeds from Issuance of Warrants Restatement Determination Date: Restatement Determination Date [Axis] Number of securities called by each warrant or right (in share per share) Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Interest income Investment Income, Interest Exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Leases Lessee, Leases [Policy Text Block] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Sublease consideration Sublease Agreement, Consideration Sublease Agreement, Consideration Price of pre-funded warrants (in dollars per share) Class of Warrant or Right, Price of Pre-Funded Warrants Class of Warrant or Right, Price of Pre-Funded Warrants Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] License [Member]