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, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Numerator for Basic and Diluted loss per share - loss available to common stockholders	$ (12,814)	$ (28,066)	$ (34,414)	$ (67,632)
Denominator:
Denominator for Basic Loss per share-Weighted-average Common Stock	217,253,856	177,870,238	214,918,925	174,475,591
Denominator for Dilutive Loss per share-Weighted-average Common Stock	217,253,856	177,870,238	214,918,925	174,475,591
Basic loss per share	$ (0.06)	$ (0.16)	$ (0.16)	$ (0.39)
Diluted loss per share	$ (0.06)	$ (0.16)	$ (0.16)	$ (0.39)
Class A Common Stock [Member]
Denominator:
Denominator for Basic Loss per share-Weighted-average Common Stock	198,507,575	160,039,714	196,573,719	156,645,066
Denominator for Dilutive Loss per share-Weighted-average Common Stock	198,507,575	160,039,714	196,573,719	156,645,066
Class B Common Stock [Member]
Denominator:
Denominator for Basic Loss per share-Weighted-average Common Stock	18,746,281	17,830,524	18,345,206	17,830,524
Denominator for Dilutive Loss per share-Weighted-average Common Stock	18,746,281	17,830,524	18,345,206	17,830,524