Net Income (Loss) Per Share - Schedule of Calculation of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Basic net income (loss) per share:
Net income (loss)	$ 9,738	$ (13,068)
Weighted-average shares used in calculating net income (loss) per share, basic (in shares)	313,456	306,034
Basic net income (loss) per share (in dollars per share)	$ 0.03	$ (0.04)
Diluted net income (loss) per share:
Allocation of distributed net income (loss) for basic computation	$ 9,738	$ (13,068)
Number of shares used in basic calculation (in shares)	313,456	306,034
Weighted-average effect of diluted securities:
Number of shares used in diluted calculation (in shares)	345,668	306,034
Diluted net loss per share (in dollars per share)	$ 0.03	$ (0.04)
Class A Common Stock
Basic net income (loss) per share:
Net income (loss)	$ 8,332	$ (9,547)
Weighted-average shares used in calculating net income (loss) per share, basic (in shares)	268,197	223,566
Basic net income (loss) per share (in dollars per share)	$ 0.03	$ (0.04)
Diluted net income (loss) per share:
Allocation of distributed net income (loss) for basic computation	$ 8,332	$ (9,547)
Reallocation of undistributed net income (loss) as a result of conversion of Class B to Class A shares	1,406	(3,521)
Allocation of undistributed income (loss)	$ 9,738	$ (13,068)
Number of shares used in basic calculation (in shares)	268,197	223,566
Weighted-average effect of diluted securities:
Conversion of Class B to Class A common shares outstanding (in shares)	45,259	82,468
Shares issuable upon conversion of the convertible senior notes (in shares)	8,098	0
Number of shares used in diluted calculation (in shares)	345,668	306,034
Diluted net loss per share (in dollars per share)	$ 0.03	$ (0.04)
Class A Common Stock | Employee stock options
Weighted-average effect of diluted securities:
Dilutive effect of share-based payment arrangements (in shares)	20,075	0
Class A Common Stock | Unvested early exercises
Weighted-average effect of diluted securities:
Dilutive effect of share-based payment arrangements (in shares)	11	0
Class A Common Stock | Restricted stock units
Weighted-average effect of diluted securities:
Dilutive effect of share-based payment arrangements (in shares)	3,373	0
Class A Common Stock | Unvested restricted stock in connection with acquisition
Weighted-average effect of diluted securities:
Dilutive effect of share-based payment arrangements (in shares)	655	0
Class B Common Stock
Basic net income (loss) per share:
Net income (loss)	$ 1,406	$ (3,521)
Weighted-average shares used in calculating net income (loss) per share, basic (in shares)	45,259	82,468
Basic net income (loss) per share (in dollars per share)	$ 0.03	$ (0.04)
Diluted net income (loss) per share:
Allocation of distributed net income (loss) for basic computation	$ 1,406	$ (3,521)
Reallocation of undistributed net income (loss) as a result of conversion of Class B to Class A shares	0	0
Allocation of undistributed income (loss)	$ 1,406	$ (3,521)
Number of shares used in basic calculation (in shares)	45,259	82,468
Weighted-average effect of diluted securities:
Conversion of Class B to Class A common shares outstanding (in shares)	0	0
Shares issuable upon conversion of the convertible senior notes (in shares)	0	0
Number of shares used in diluted calculation (in shares)	45,259	82,468
Diluted net loss per share (in dollars per share)	$ 0.03	$ (0.04)
Class B Common Stock | Employee stock options
Weighted-average effect of diluted securities:
Dilutive effect of share-based payment arrangements (in shares)	0	0
Class B Common Stock | Unvested early exercises
Weighted-average effect of diluted securities:
Dilutive effect of share-based payment arrangements (in shares)	0	0
Class B Common Stock | Restricted stock units
Weighted-average effect of diluted securities:
Dilutive effect of share-based payment arrangements (in shares)	0	0
Class B Common Stock | Unvested restricted stock in connection with acquisition
Weighted-average effect of diluted securities:
Dilutive effect of share-based payment arrangements (in shares)	0	0