Segment Information (Details) $ in Thousands	12 Months Ended
Dec. 31, 2024 USD ($) Segment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments \| Segment	1
Total research and development expenses	$ 168,098	$ 77,707	$ 311,681
Reportable Segment
Segment Reporting Information [Line Items]
Program third-party research and development expenses	31,957	8,332	8,180
Other research and development expenses	136,141	69,375	303,501
Total research and development expenses	$ 168,098	$ 77,707	$ 311,681

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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