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		2,939			2,939
Issuance of common stock upon exercise of stock options (in shares)	217
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 common stock for bonuses		19,771			19,771
Issuance of common 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)	1,675
Stock based compensation		85,165			85,165
Unrealized gain on available-for sale securities			7,159		7,159
Net loss				(247,740)	(247,740)
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
Balance at Mar. 31, 2023	$ 11	2,741,932	(11,798)	(2,079,572)	650,573
Balance (in shares) at Mar. 31, 2023	113,359
Issuance of common stock upon exercise of stock options		638			638
Issuance of common stock upon exercise of stock options (in shares)	48
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
Vesting of restricted stock units (in shares)	425
Stock based compensation		44,470			44,470
Unrealized gain on available-for sale securities			2,595		2,595
Net loss				(110,803)	(110,803)
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
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		8,648			$ 8,648
Issuance of common stock upon exercise of stock options (in shares)	1,078
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 common stock for bonuses		24,071			24,071
Issuance of common stock for bonuses (in shares)	270
Vesting of restricted stock units	$ 1				1
Vesting of restricted stock units (in shares)	2,173
Stock based compensation		132,947			132,947
Unrealized gain on available-for sale securities			1,727		1,727
Net loss				(105,063)	(105,063)
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				123,365
Balance at Mar. 31, 2024	$ 12	3,241,326	(2,192)	(2,445,035)	$ 794,111
Balance (in shares) at Mar. 31, 2024	122,234
Issuance of common stock upon exercise of stock options		2,182			2,182
Issuance of common stock upon exercise of stock options (in shares)	286
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
Vesting of restricted stock units (in shares)	582
Stock based compensation		67,995			67,995
Unrealized gain on available-for sale securities			834		834
Net loss				(37,464)	(37,464)
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				123,365