Loss Per Share - Schedule of Basic and Diluted Net Loss Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Net Income (Loss)	$ (135,712)	$ (146,975)	$ (107,436)	$ (122,224)	$ (123,681)	$ (103,126)	$ (390,123)	$ (349,031)
Weighted average shares outstanding, basic	101,002			88,645			97,842	88,204
Weighted average shares outstanding, diluted	101,002			88,645			97,842	88,204
Net loss per share, basic	$ (1.34)			$ (1.38)			$ (3.99)	$ (3.96)
Net loss per share, diluted	$ (1.34)			$ (1.38)			$ (3.99)	$ (3.96)