Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended					3 Months Ended	12 Months Ended
	Sep. 10, 2021	Sep. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Nov. 30, 2022	Jul. 31, 2021	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock issued (in dollars per share)		$ 55			$ 35	$ 113
Payment of offering expenses		$ 400			$ 500	$ 400
Proceeds from issuance of common stock		$ 235,800			$ 433,200	$ 551,200
Research and development								$ 320,678	$ 316,415	$ 264,208
Preferred stock, shares authorized								50,000,000
Preferred stock, shares issued								0
Preferred stock, shares outstanding								0
Common stock, shares authorized				750,000,000				750,000,000	750,000,000
Common stock, par value (in dollars per share)				$ 0.0001				$ 0.0001	$ 0.0001
Common stock, shares issued		4,550,000		111,255,000	13,144,500	5,175,000		119,581,000	111,255,000
Common stock, shares outstanding				111,255,000				119,581,000	111,255,000
In-process research and development acquisition
Asset acquisition, consideration	$ 35,600		$ 15,000	$ 10,000
Issuance of common stock	276,346
Value of common stock issued	$ 30,900				$ 10,000		$ 15,000
Cash consideration	3,900
Net liabilities assumed	200
Acquisition related costs	600
Value of additional shares potentially issuable	$ 35,000
Number of additional shares potentially issuable	269,547
Research and development	$ 35,600
Common stock
Common stock, shares issued				111,255,000				119,581,000	111,255,000	95,140,000	86,223,000