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Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands |  | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 27, 2021 OfficeSuite | Sep. 30, 2023 USD ($) | Dec. 31, 2022 USD ($) OfficeSuite Segment | Dec. 31, 2021 USD ($) | Nov. 17, 2021 USD ($) | Aug. 30, 2021 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of reportable segments | Segment |  |  | 1 |  |  |
Restricted cash |  | $ 1,700 | $ 1,700 |  |  |
Operating lease right-of-use assets |  | 13,195 | 5,580 | $ 11,574 |  |
Operating lease liability |  | 53,111 | 5,794 |  |  |
Impairment of long lived assets |  |  | 0 | $ 0 |  |
Research and development credits to offset payroll tax expenses |  |  | 100 |  |  |
Research and development credit generated against employer portion payroll tax |  |  | $ 300 |  |  |
ESPP |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Offering period commenced date |  |  | Jun. 25, 2021 |  |  |
Offering period end date |  |  | Nov. 30, 2021 |  |  |
Offering period term of contract |  |  | 6 months |  |  |
Common stock, percent |  |  | 15.00% |  |  |
Offering period description terms |  |  | The second, third, and fourth offering periods commenced on December 1, 2021, June 1, 2022, and December 1, 2022, respectively. |  |  |
Lease Agreement |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of office suites | OfficeSuite | 2 |  |  |  |  |
Operating lease right-of-use assets |  | 13,200 | $ 4,200 |  |  |
Operating lease liability |  | $ 53,100 | $ 4,500 |  |  |
Maximum |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Liquid investments maturity period |  | 3 months | 3 months |  |  |
Property and equipment estimated useful life |  |  | 5 years |  |  |
Minimum |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Property and equipment estimated useful life |  |  | 3 years |  |  |
Accounting Standards Update 2016-02 | Lease Agreement |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of office suites | OfficeSuite |  |  | 2 |  |  |
Operating lease right-of-use assets |  |  | $ 4,100 |  |  |
Operating lease liability |  |  | 4,100 |  |  |
Accounting Standards Update 2016-02 | Service Agreement |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Operating lease right-of-use assets |  |  |  |  | $ 600 | $ 5,300
Operating lease liability |  |  |  |  | $ 600 | $ 5,300
Accounting Standards Update 2016-02 | Sublease Agreement |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Operating lease right-of-use assets |  |  | 3,200 |  |  |
Operating lease liability |  |  | $ 3,200 |  |  |
Accounting Standards Update 2016-13 |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] |  |  | true |  |  |
Change in Accounting Principle, Accounting Standards Update, Adoption Date |  |  | Jan. 01, 2022 |  |  |
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false] |  |  | true |  |  |

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