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Commitments and Contingencies - Additional Information (Details) - USD ($) |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Jul. 29, 2020 | Jun. 30, 2020 | Nov. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2020
Lessee, Lease, Description [Line Items] |  |  |  |  |
Operating lease, weighted average discount rate |  |  |  | 7.00% | 7.00%
Weighted average remaining lease term |  |  |  | 3 years 8 months 12 days | 3 years 8 months 12 days
Cash paid for operating lease liabilities |  |  |  | $ 1,000,000.0 | $ 2,600,000
Rent expense |  |  |  | 1,000,000.0 | $ 2,900,000
Non-cancelable Lease Agreement Entered in August 2018 |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Operating sublease, annual increase percentage for base rent |  |  |  |  | 3.00%
Additional Non-cancelable Lease Agreement Entered in November 2019 |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Monthly base rent for permanent space |  |  | $ 63,425 |  |
Monthly base rent for temporary space |  |  | $ 28,745 |  |
Option to extend lease term of permanent space |  |  | 12 months |  |
Annual increase percentage for lease charges |  |  | 3.00% |  |
Sublease Agreement Entered in June 2020 |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Sublease monthly base rent |  | $ 63,425 |  |  |
Sublease annual increase percentage for lease charges |  | 3.00% |  |  |
Sublease period of base rent abatement |  | 6 months |  |  |
Sublease income |  |  |  | $ 100,000 | $ 100,000
Lease Assignment Agreement Entered in July 2020 |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Annual increase percentage for lease charges | 2.50% |  |  |  |
Operating lease, renewal term | 5 years |  |  |  |
Lease assignment agreement, monthly base rent expense | $ 28,495 |  |  |  |

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