Net Loss Per Share - Summary of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share Basic And Diluted [Line Items]
Net loss attributable to common stockholders-basic and diluted	$ (34,610)	$ (37,417)	$ (26,709)	$ (87,969)	$ (16,665)	$ (15,882)	$ (98,736)	$ (120,516)
Earnings Per Share, Basic [Abstract]
Weighted average common shares outstanding-basic	469,768,797			228,266,647			463,709,955	129,232,016
Weighted average common shares outstanding, diluted	469,768,797			228,266,647			463,709,955	129,232,016
Net loss per share attributable to common stockholders-basic	$ (0.07)			$ (0.39)			$ (0.21)	$ (0.93)
Net loss per share attributable to common stockholders- diluted	$ (0.07)			$ (0.39)			$ (0.21)	$ (0.93)