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Cover [Abstract] Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Fair Value, Recurring Fair Value, Recurring [Member] Series A Convertible Preferred Stock Series A Preferred Stock [Member] Other non-current liabilities Other Liabilities, Noncurrent 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 Initial license issuance fee License Agreement, Initial License Issuance Fee License Agreement, Initial License Issuance Fee Non-NEOs Non-NEOs [Member] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period Total Lessee, Operating Lease, Liability, to be Paid Construction in progress Construction in Progress [Member] Subsidiary, Sale of Stock [Line Items] Subsidiary, Sale of Stock [Line Items] Total operating expenses Operating Expenses Net (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Non-PEO NEO Non-PEO NEO [Member] Lease renewal term Lessee, Operating Lease, Renewal Term Equity Component [Domain] Equity Component [Domain] Adjustment to Compensation: Adjustment to Compensation [Axis] State and local State and Local Jurisdiction [Member] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Debt Debt Instrument [Line Items] Shares used in calculating net loss per common share - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Entity Current Reporting Status Entity Current Reporting Status Less: unamortized debt issuance costs Unamortized Debt Issuance Expense Loss from operations Operating Income (Loss) Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Statement [Line Items] Statement [Line Items] Series A convertible preferred stock conversion Stock Issued During Period, Value, Conversion of Convertible Securities Property and Equipment, Net Property, Plant and Equipment, Policy [Policy Text Block] Weighted Average Remaining Contractual Life (Years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Schedule of Amortized Cost and Fair Value of the Company's Available-for-sale Investments by Security Type Debt Securities, Available-for-Sale [Table Text Block] Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis]