Net Loss per Common Share - Summary of Basic and Diluted Net Loss per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net Income (Loss)	$ (528,628)	$ (652,172)	$ (746,354)
Denominator:
Weighted-average number of common shares used in net loss per common share, basic	118,678	106,114	84,421
Weighted-average number of common shares used in net loss per common share, diluted	118,678	106,114	84,421
Net loss per common share, basic	$ (4.45)	$ (6.15)	$ (8.84)
Net loss per common share, diluted	$ (4.45)	$ (6.15)	$ (8.84)