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Summary of Significant Accounting Policies (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Restricted cash | $ 100,000 |  | $ 100,000 |  | $ 0
Inventory in raw materials | 26,000,000 |  | 26,000,000 |  | 100,000
Inventory Finished Goods | 14,000,000 |  | 14,000,000 |  | 100,000
Incurred of deferred offering costs | 2,300,000 |  | 2,300,000 |  |
Deferred Revenue | 100,000 |  | 100,000 |  | 100,000
Grant funding recognized on conditional grants | 0 | $ 200,000 | 200,000 | $ 700,000 |
Research and Development Expense [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Other income and expenses | 400,000 | 1,300,000 | 1,100,000 | 2,600,000 |
Prepaid expenses |  | $ 1,200,000 |  | $ 1,200,000 | 2,100,000
Accrued liabilities | $ 600,000 |  | $ 600,000 |  | $ 300,000
Equipment [Member] | Minimum [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Useful lives of asset |  |  | 3 years |  |
Equipment [Member] | Maximum [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Useful lives of asset |  |  | 5 years |  |
Furniture and Fixtures [Member] | Minimum [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Useful lives of asset |  |  | 3 years |  |
Furniture and Fixtures [Member] | Maximum [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Useful lives of asset |  |  | 7 years |  |

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