Summary of Significant Accounting Policies - Liquidity and Going Concern - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Aug. 31, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income (loss) attributable to parent		$ (58,792)	$ (20,319)	$ (82,530)	$ (43,053)
Net cash used in operating activities				(37,197)	$ (34,156)
Accumulated deficit		2,047,001		2,047,001		$ 1,964,471
Cash, cash equivalents, and short-term investments		$ 19,536		$ 19,536
Subsequent Event
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Proceeds from issuance initial public offering	$ 31,363