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Marketable Securities - Summary of Amortized Cost Gross Unrealized Holding Gains or Losses, and Fair Value of Marketable Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost Basis | $ 51,093 | $ 236,869
Unrealized Gains | 0 | 28
Unrealized Losses | (95) | (1,076)
Marketable securities | 50,998 | 235,821
U.S. Treasuries |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost Basis | 4,469 | 65,807
Unrealized Gains | 0 | 0
Unrealized Losses | (13) | (416)
Marketable securities | 4,456 | 65,391
Commercial Paper |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost Basis | 7,942 | 115,381
Unrealized Gains | 0 | 13
Unrealized Losses | (5) | (333)
Marketable securities | 7,937 | 115,061
Asset Backed Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost Basis | 1,982 | 1,914
Unrealized Gains | 0 | 0
Unrealized Losses | (3) | 0
Marketable securities | 1,979 | 1,914
U.S. agency securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost Basis | 36,700 | 53,767
Unrealized Gains | 0 | 15
Unrealized Losses | (74) | (327)
Marketable securities | $ 36,626 | $ 53,455

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