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Cash Equivalents and Marketable Securities - Summary of Amortized Cost and Fair Value of Cash Equivalents and Marketable Securities by Major Investment Category (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | $ 383,055 | $ 452,119
Gross Unrealized Gain | 9 | 26
Gross Unrealized Loss | (157) | (102)
Estimated Fair Value | 382,907 | 452,043
Cash Equivalents |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 142,817 | 362,254
Gross Unrealized Gain | 0 | 6
Gross Unrealized Loss | 0 | (6)
Estimated Fair Value | 142,817 | 362,254
Cash Equivalents | Money Market Funds |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 142,817 | 306,801
Gross Unrealized Gain | 0 | 0
Gross Unrealized Loss | 0 | 0
Estimated Fair Value | 142,817 | 306,801
Cash Equivalents | U.S Government and Agency Debt Securities |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost |  | 12,998
Gross Unrealized Gain | 0 | 0
Gross Unrealized Loss | (108) | (6)
Estimated Fair Value | 122,552 | 12,992
Cash Equivalents | Commercial Paper |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost |  | 42,455
Gross Unrealized Gain | 3 | 6
Gross Unrealized Loss | (1) | 0
Estimated Fair Value | 11,671 | 42,461
Marketable Securities |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 240,238 | 89,865
Gross Unrealized Gain | 9 | 20
Gross Unrealized Loss | (157) | (96)
Estimated Fair Value | 240,090 | 89,789
Marketable Securities | U.S Government and Agency Debt Securities |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 122,660 | 37,515
Gross Unrealized Gain |  | 0
Gross Unrealized Loss |  | (91)
Estimated Fair Value |  | 37,424
Marketable Securities | Corporate Debt Securities |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 36,297 | 4,816
Gross Unrealized Gain | 5 | 3
Gross Unrealized Loss | (12) | (1)
Estimated Fair Value | 36,290 | 4,818
Marketable Securities | Commercial Paper |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 69,612 | 47,534
Gross Unrealized Gain | 1 | 17
Gross Unrealized Loss | (36) | (4)
Estimated Fair Value | 69,577 | $ 47,547
Marketable Securities | Certificates of Deposit |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | $ 11,669 |

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