Net Loss Per Share Attributable to Common Stockholders - EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator [Abstract]
Net loss attributable to Class A and Class B common stockholders, basic	$ (222,962)	$ (184,780)	$ (163,929)
Net loss attributable to Class A and Class B common stockholders, diluted	$ (222,962)	$ (184,780)	$ (163,929)
Denominator [Abstract]
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, basic (in shares)	532,540,175	545,397,254	362,756,466
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, diluted (in shares)	532,540,175	545,397,254	362,756,466
Net loss per share attributable to Class A and Class B common stockholders, basic (in dollars per share)	$ (0.42)	$ (0.34)	$ (0.45)
Net loss per share attributable to Class A and Class B common stockholders, diluted (in dollars per share)	$ (0.42)	$ (0.34)	$ (0.45)