Non-Cash Share-Based Compensation - Non-Cash Expense (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Share-Based Compensation
Total non-cash share-based compensation expense	$ 21,535	$ 12,160	$ 95,409	$ 59,269
Total unrecognized compensation cost	118,851		$ 118,851
Weighted average period for recognition of compensation cost			1 year 3 months 25 days
Research and development expenses
Share-Based Compensation
Total non-cash share-based compensation expense	13,947	7,164	$ 62,291	35,526
General and administrative expenses
Share-Based Compensation
Total non-cash share-based compensation expense	$ 7,588	$ 4,996	$ 33,118	$ 23,743

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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-Publisher FASB
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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of noncash expense for share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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