Net Loss Per Share - Calculation of Basic and Diluted Net Loss (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator:
Net loss	$ (107,192)	$ (99,353)	$ (308,020)	$ (25,751)
Denominator:
Common stock shares outstanding (in shares)	143,410,923	137,644,534	142,151,719	137,076,199
Weighted average number of shares outstanding, basic (in shares)	169,456,988	137,644,534	162,589,325	137,076,199
Weighted average number of shares outstanding, diluted (in shares)	169,456,988	137,644,534	162,589,325	137,076,199
Net loss per share, basic (usd per share)	$ (0.63)	$ (0.72)	$ (1.89)	$ (0.19)
Net loss per share, diluted (usd per share)	$ (0.63)	$ (0.72)	$ (1.89)	$ (0.19)
Pre-Funded Warrant
Denominator:
Private placement pre-funded warrants (in shares)	26,046,065	0	20,437,606	0