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Convertible and Other Debt - Additional Information (Details) - USD ($) | 3 Months Ended | 54 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | May 31, 2020
Debt Instrument [Line Items] |  |  |
Debt description | The Company issued convertible promissory notes between December 2015 and May 2020 totaling $21.8 million, of which $2.0 million was with related parties. The convertible promissory notes accrued interest at 8% per annum with maturity dates of five years after issuance. The convertible promissory notes were settled in connection with the Company’s Series D financing in July 2020. |  |
Interest Expense | $ 2,000 | $ 547,000 |
Debt Instrument Outstanding Principal Amount | $ 700,000 |  |
Convertible Promissory Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Face Amount |  |  | $ 21,800,000
Debt Instrument, Interest Rate, Stated Percentage | 8.00% |  |
Related Party Transaction, Amounts of Transaction |  |  | $ 2,000,000.0
Debt Instrument, Maturity Date, Description | five years after issuance |  |
Outstanding Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest Expense | $ 2,000 | $ 500,000 |

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