Net Loss Per Share - Summary of Computation of Basic and Diluted Net Loss Per Share (Details) - 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
Numerator:
Net loss	$ (72,547)	$ (58,700)	$ (53,721)	$ (53,027)	$ (38,543)	$ (35,625)	$ (184,968)	$ (127,195)
Denominator:
Weighted-average common shares outstanding, basic	159,576			46,691			158,837	35,428
Weighted-average common shares outstanding, diluted	159,576			46,691			158,837	35,428
Net loss per share, basic	$ (0.45)			$ (1.14)			$ (1.16)	$ (3.59)
Net loss per share, diluted	$ (0.45)			$ (1.14)			$ (1.16)	$ (3.59)