Marketable Securities - Schedule of Available-for-sale Securities in an Unrealized Loss Position (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value
Less Than 12 months, Fair Value	$ 470,022	$ 222,954
12 months or Greater, Fair Value	75,692	0
Total Fair Value	545,714	222,954
Unrealized Losses
Less Than 12 months, Gross Unrealized Losses	(312)	(578)
12 months or Greater, Gross Unrealized Losses	(209)	0
Total Gross Unrealized Losses	(521)	(578)
U.S. Treasury securities
Fair Value
Less Than 12 months, Fair Value	469,288	214,291
12 months or Greater, Fair Value	74,471	0
Total Fair Value	543,759	214,291
Unrealized Losses
Less Than 12 months, Gross Unrealized Losses	(312)	(566)
12 months or Greater, Gross Unrealized Losses	(205)	0
Total Gross Unrealized Losses	(517)	(566)
U.S. Government agency securities
Fair Value
Less Than 12 months, Fair Value		4,998
12 months or Greater, Fair Value		0
Total Fair Value		4,998
Unrealized Losses
Less Than 12 months, Gross Unrealized Losses		(2)
12 months or Greater, Gross Unrealized Losses		0
Total Gross Unrealized Losses		(2)
Negotiable certificates of deposit
Fair Value
Less Than 12 months, Fair Value	734	3,665
12 months or Greater, Fair Value	1,221	0
Total Fair Value	1,955	3,665
Unrealized Losses
Less Than 12 months, Gross Unrealized Losses	0	(10)
12 months or Greater, Gross Unrealized Losses	(4)	0
Total Gross Unrealized Losses	$ (4)	$ (10)