Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (loss)	Accumulated Deficit
Balance at the beginning of the period (in shares) at Dec. 31, 2021		541,384,000
Balance at the beginning of the period at Dec. 31, 2021	$ 1,573,426	$ 54	$ 1,993,055	$ (2,230)	$ (417,453)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of vested options (in shares)		7,786,000
Issuance of common stock upon exercise of options	9,754		9,754
Repurchase of early exercised stock options (in shares)		(46,000)
Issuance of common stock under employee stock purchase plan (in shares)		683,000
Issuance of common stock under employee stock purchase plan	4,762		4,762
Issuance of common stock net settlement of restricted stock units (in shares)		3,215,000
Issuance of common stock upon net settlement of restricted stock units	(15,362)		(15,362)
Vesting of common stock warrants	8,621		8,621
Share-based compensation expense	107,529		107,529
Executive Chairman Long-Term Performance Award	53,214		53,214
Repurchase and retirement of common stock (in shares)		(11,657,000)
Repurchase and retirement of common stock	(79,201)	$ (1)	(79,200)
Change in accumulated other comprehensive income (loss)	(5,007)			(5,007)
Net income (loss)	(184,780)				(184,780)
Balance at the end of the period (in shares) at Dec. 31, 2022		541,364,000
Balance at the end of the period at Dec. 31, 2022	1,472,956	$ 53	2,082,373	(7,237)	(602,233)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of vested options (in shares)		3,353,000
Issuance of common stock upon exercise of options	5,399	$ 1	5,398
Repurchase of early exercised stock options (in shares)		(3,000)
Issuance of common stock under employee stock purchase plan (in shares)		792,000
Issuance of common stock under employee stock purchase plan	3,066		3,066
Issuance of common stock net settlement of restricted stock units (in shares)		9,347,000
Issuance of common stock upon net settlement of restricted stock units	(26,661)	$ 1	(26,662)
Vesting of common stock warrants	8,715		8,715
Share-based compensation expense	132,017		132,017
Executive Chairman Long-Term Performance Award	53,214		53,214
Repurchase and retirement of common stock (in shares)		(34,511,000)
Repurchase and retirement of common stock	(190,348)	$ (3)	(190,345)
Change in accumulated other comprehensive income (loss)	7,999			7,999
Net income (loss)	(222,962)				(222,962)
Balance at the end of the period (in shares) at Dec. 31, 2023		520,343,000
Balance at the end of the period at Dec. 31, 2023	1,243,395	$ 52	2,067,776	762	(825,195)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of vested options (in shares)		185,000
Issuance of common stock upon exercise of options	203		203
Issuance of common stock under employee stock purchase plan (in shares)		656,000
Issuance of common stock under employee stock purchase plan	2,715		2,715
Issuance of common stock net settlement of restricted stock units (in shares)		11,505,000
Issuance of common stock upon net settlement of restricted stock units	(35,407)	$ 1	(35,408)
Vesting of common stock warrants	2,422		2,422
Share-based compensation expense	143,621		143,621
Executive Chairman Long-Term Performance Award	(144,617)		(144,617)
Repurchase and retirement of common stock (in shares)		(28,393,000)
Repurchase and retirement of common stock	(153,525)	$ (3)	(153,522)
Change in accumulated other comprehensive income (loss)	(1,076)			(1,076)
Net income (loss)	27,287				27,287
Balance at the end of the period (in shares) at Dec. 31, 2024		504,296,000
Balance at the end of the period at Dec. 31, 2024	$ 1,085,018	$ 50	$ 1,883,190	$ (314)	$ (797,908)