Net Loss Per Share Attributable to Common Stockholders - Summary of Basic and Diluted Net Loss Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net loss	$ (28,066)	$ (52,159)	$ (67,632)	$ (109,114)
Denominator:
Denominator for Basic Loss per share-Weighted-average Common Stock	177,870,238	154,597,506	174,475,591	152,334,247
Denominator for Dilutive Loss per share-Weighted-average Common Stock	177,870,238	154,597,506	174,475,591	152,334,247
Basic loss per share	$ (0.16)	$ (0.34)	$ (0.39)	$ (0.72)
Diluted loss per share	$ (0.16)	$ (0.34)	$ (0.39)	$ (0.72)
Class A Common Stock [Member]
Denominator:
Denominator for Basic Loss per share-Weighted-average Common Stock	160,039,714	138,491,529	156,645,066	136,467,190
Denominator for Dilutive Loss per share-Weighted-average Common Stock	160,039,714	138,491,529	156,645,066	136,467,190
Class B Common Stock [Member]
Denominator:
Denominator for Basic Loss per share-Weighted-average Common Stock	17,830,524	16,105,977	17,830,524	15,867,057
Denominator for Dilutive Loss per share-Weighted-average Common Stock	17,830,524	16,105,977	17,830,524	15,867,057