Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Total
Balance at Dec. 31, 2022	$ 11	$ 2,664,730	$ (16,362)	$ (1,942,635)	$ 705,744
Balance (in shares) at Dec. 31, 2022	111,255
Issuance of common stock upon exercise of stock options		3,501			3,501
Issuance of common stock upon exercise of stock options (in shares)	265
Issuance of common stock under the employee stock purchase plan		8,674			8,674
Issuance of common stock under the employee stock purchase plan (in shares)	219
Issuance of stock for bonuses		19,771			19,771
Issuance of stock for bonuses (in shares)	349
Issuance of common stock for IPR&D milestone		14,435			14,435
Issuance of common stock for IPR&D milestone (in shares)	336
Vesting of restricted stock units (in shares)	2,016
Stock based compensation		142,896			142,896
Unrealized gain on available-for sale securities			10,966		10,966
Issuance of common stock for public offering, net		235,441			235,441
Issuance of common stock for public offering, net (in shares)	4,550
Net loss				(356,770)	(356,770)
Balance at Sep. 30, 2023	$ 11	3,089,448	(5,396)	(2,299,405)	784,658
Balance (in shares) at Sep. 30, 2023	118,990
Balance at Jun. 30, 2023	$ 11	2,795,714	(9,203)	(2,190,375)	596,147
Balance (in shares) at Jun. 30, 2023	114,051
Issuance of common stock upon exercise of stock options		562			562
Issuance of common stock upon exercise of stock options (in shares)	48
Vesting of restricted stock units (in shares)	341
Stock based compensation		57,731			57,731
Unrealized gain on available-for sale securities			3,807		3,807
Issuance of common stock for public offering, net		235,441			235,441
Issuance of common stock for public offering, net (in shares)	4,550
Net loss				(109,030)	(109,030)
Balance at Sep. 30, 2023	$ 11	3,089,448	(5,396)	(2,299,405)	784,658
Balance (in shares) at Sep. 30, 2023	118,990
Balance at Dec. 31, 2023	$ 11	3,145,837	(3,085)	(2,377,436)	$ 765,327
Balance (in shares) at Dec. 31, 2023	119,581				119,581
Issuance of common stock upon exercise of stock options		10,368			$ 10,368
Issuance of common stock upon exercise of stock options (in shares)	1,325
Issuance of common stock under the employee stock purchase plan		8,862			8,862
Issuance of common stock under the employee stock purchase plan (in shares)	263
Issuance of stock for bonuses		24,071			24,071
Issuance of stock for bonuses (in shares)	270
Vesting of restricted stock units	$ 1				1
Vesting of restricted stock units (in shares)	2,698
Stock based compensation		204,231			204,231
Unrealized gain on available-for sale securities			2,320		2,320
Net loss				(136,655)	(136,655)
Balance at Sep. 30, 2024	$ 12	3,393,369	(765)	(2,514,091)	$ 878,525
Balance (in shares) at Sep. 30, 2024	124,137				124,137
Balance at Jun. 30, 2024	$ 12	3,320,365	(1,358)	(2,482,499)	$ 836,520
Balance (in shares) at Jun. 30, 2024	123,365
Issuance of common stock upon exercise of stock options		1,720			1,720
Issuance of common stock upon exercise of stock options (in shares)	247
Vesting of restricted stock units (in shares)	525
Stock based compensation		71,284			71,284
Unrealized gain on available-for sale securities			593		593
Net loss				(31,592)	(31,592)
Balance at Sep. 30, 2024	$ 12	$ 3,393,369	$ (765)	$ (2,514,091)	$ 878,525
Balance (in shares) at Sep. 30, 2024	124,137				124,137