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Net Income (Loss) Per Share - Schedule of Earnings Per Share - Basic (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Net income (loss) per share, basic:
Net income (loss)	$ (52,847)	$ 13,398	$ 21,323	$ (11,082)	$ (39,449)	$ 10,241
Less: Accretion of redeemable convertible preferred stock	(483)		(956)		(1,480)	(1,911)
Less: Undistributed earnings attributable to participating securities	0		(4,745)		0	(1,943)
Net income (loss) attributable to Class A and Class B common stockholders	$ (53,330)		$ 15,622		$ (40,929)	$ 6,387
Weighted-average shares of common stock outstanding (in shares)	96,726		79,681		87,829	79,552
Net income (loss) per share - basic (in dollars per share)	$ (0.55)		$ 0.20		$ (0.47)	$ 0.08

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-SubTopic 10
-Section 45
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e1448-109256

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