Net income (loss) per share - Calculation of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Denominator:
Basic weighted-average shares used in computing net income (loss) per share (in shares)	674,641	665,732	640,030
Diluted weighted-average shares used in computing net income (loss) per share) (in shares)	674,641	665,732	691,651
Basic net income (loss) per share (in dollars per share)	$ (0.05)	$ (0.14)	$ 0.49
Diluted net income (loss) per share (in dollars per share)	$ (0.05)	$ (0.14)	$ 0.46
Class A
Numerator:
Net income (loss)	$ (30,937)	$ (83,110)	$ 274,699
Reallocation of net income as a result of conversion of Class B to Class A common stock	0	0	41,739
Reallocation of net income to Class B common stock	0	0	0
Diluted net income (loss)	$ (30,937)	$ (83,110)	$ 316,438
Denominator:
Basic weighted-average shares used in computing net income (loss) per share (in shares)	586,109	576,061	555,608
Conversion of Class B to Class A common stock (in shares)	0	0	84,422
Weighted average effect of dilutive potential common stock (in shares)	0	0	51,621
Diluted weighted-average shares used in computing net income (loss) per share) (in shares)	586,109	576,061	691,651
Basic net income (loss) per share (in dollars per share)	$ (0.05)	$ (0.14)	$ 0.49
Diluted net income (loss) per share (in dollars per share)	$ (0.05)	$ (0.14)	$ 0.46
Class B
Numerator:
Net income (loss)	$ (4,673)	$ (12,937)	$ 41,739
Reallocation of net income as a result of conversion of Class B to Class A common stock	0	0	0
Reallocation of net income to Class B common stock	0	0	(3,115)
Diluted net income (loss)	$ (4,673)	$ (12,937)	$ 38,624
Denominator:
Basic weighted-average shares used in computing net income (loss) per share (in shares)	88,532	89,671	84,422
Conversion of Class B to Class A common stock (in shares)	0	0	0
Weighted average effect of dilutive potential common stock (in shares)	0	0	0
Diluted weighted-average shares used in computing net income (loss) per share) (in shares)	88,532	89,671	84,422
Basic net income (loss) per share (in dollars per share)	$ (0.05)	$ (0.14)	$ 0.49
Diluted net income (loss) per share (in dollars per share)	$ (0.05)	$ (0.14)	$ 0.46