Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Class A and Class B Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020		626,372
Beginning balance at Dec. 31, 2020	$ 2,242,371	$ 6	$ 4,574,934	$ 2,480	$ (2,335,049)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Release of restricted stock units (in shares)		11,323
Issuance of common stock for cash upon exercise of stock options, net (in shares)		4,843
Issuance of common stock for cash upon exercise of stock options, net	14,935		14,935
Issuance of common stock related to charitable contributions (in shares)		250
Issuance of common stock related to charitable contributions	20,490		20,490
Share-based compensation	179,720		179,720
Other comprehensive loss	(1,332)			(1,332)
Net income (loss)	47,743				47,743
Ending balance (in shares) at Jun. 30, 2021		642,788
Ending balance at Jun. 30, 2021	2,503,927	$ 6	4,790,079	1,148	(2,287,306)
Beginning balance (in shares) at Mar. 31, 2021		635,329
Beginning balance at Mar. 31, 2021	2,328,823	$ 6	4,684,227	1,313	(2,356,723)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Release of restricted stock units (in shares)		5,613
Issuance of common stock for cash upon exercise of stock options, net (in shares)		1,846
Issuance of common stock for cash upon exercise of stock options, net	5,591		5,591
Share-based compensation	100,261		100,261
Other comprehensive loss	(165)			(165)
Net income (loss)	69,417				69,417
Ending balance (in shares) at Jun. 30, 2021		642,788
Ending balance at Jun. 30, 2021	2,503,927	$ 6	4,790,079	1,148	(2,287,306)
Beginning balance (in shares) at Dec. 31, 2021		656,872
Beginning balance at Dec. 31, 2021	3,038,743	$ 7	5,059,528	(2,181)	(2,018,611)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Release of restricted stock units and issuance of restricted stock awards (in shares)		8,697
Shares repurchased for tax withholdings on release of restricted stock units	$ (37,953)		(37,953)
Issuance of common stock for cash upon exercise of stock options, net (in shares)	4,557	4,557
Issuance of common stock for cash upon exercise of stock options, net	$ 4,080		4,080
Share-based compensation	190,653		190,653
Other comprehensive loss	(11,077)			(11,077)
Net income (loss)	(48,357)				(48,357)
Ending balance (in shares) at Jun. 30, 2022		670,126
Ending balance at Jun. 30, 2022	3,136,089	$ 7	5,216,308	(13,258)	(2,066,968)
Beginning balance (in shares) at Mar. 31, 2022		662,254
Beginning balance at Mar. 31, 2022	3,099,660	$ 7	5,133,804	(10,259)	(2,023,892)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Release of restricted stock units and issuance of restricted stock awards (in shares)		3,684
Shares repurchased for tax withholdings on release of restricted stock units	(37,953)		(37,953)
Issuance of common stock for cash upon exercise of stock options, net (in shares)		4,188
Issuance of common stock for cash upon exercise of stock options, net	3,044		3,044
Share-based compensation	117,413		117,413
Other comprehensive loss	(2,999)			(2,999)
Net income (loss)	(43,076)				(43,076)
Ending balance (in shares) at Jun. 30, 2022		670,126
Ending balance at Jun. 30, 2022	$ 3,136,089	$ 7	$ 5,216,308	$ (13,258)	$ (2,066,968)