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Fair Value Measurements - Summary of assets measured at fair value (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Fair Value Of Assets | $ 0 | $ 0
Marketable securities | 128,096 | 145,463
Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Fair Value Of Assets | 383,462 | 204,469
Marketable securities | 128,096 | 145,463
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Fair Value Of Assets | 255,366 | 59,006
Marketable securities | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Fair Value Of Assets | 128,096 | 145,463
Marketable securities | 128,096 | 145,463
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Marketable securities | 0 | 0
Money Market Funds [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Fair Value Of Assets | 0 | 0
Money Market Funds [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Cash and Cash Equivalents | 254,366 | 58,006
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Cash and Cash Equivalents | 254,366 | 58,006
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Cash and Cash Equivalents | 0 | 0
Cash [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Restricted Cash | 1,000 | 1,000
Cash [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Restricted Cash | 1,000 | 1,000
Cash [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Restricted Cash | 0 | 0
Cash [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Restricted Cash | 0 | 0
US Treasury Securities [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Fair Value Of Assets | 0 | 0
US Treasury Securities [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Marketable securities | 85,019 | 95,599
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Marketable securities | 0 | 0
US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Marketable securities | 85,019 | 95,599
US Government Corporations and Agencies Securities [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Fair Value Of Assets | 0 | 0
US Government Corporations and Agencies Securities [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Marketable securities | 43,077 | 49,864
US Government Corporations and Agencies Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Marketable securities | 0 | 0
US Government Corporations and Agencies Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] |  |
Marketable securities | $ 43,077 | $ 49,864

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