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Marketable Securities - Schedule of Fair Values and Unrealized Losses on Marketable Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Marketable Securities [Line Items] |  |
Fair Value, Less than 12 Months | $ 1,073,846 | $ 800,470
Fair Value, 12 Months or Greater | 327,312 | 158,064
Fair Value, Total | 1,401,158 | 958,534
Unrealized Losses, Less than 12 Months | (2,402) | (1,760)
Unrealized Losses, 12 Months or Greater | (869) | (930)
Unrealized Losses, Total | (3,271) | (2,690)
U.S. Treasury Securities [Member] |  |
Marketable Securities [Line Items] |  |
Fair Value, Less than 12 Months | 506,864 | 487,260
Fair Value, 12 Months or Greater | 181,167 | 46,130
Fair Value, Total | 688,031 | 533,390
Unrealized Losses, Less than 12 Months | (788) | (1,074)
Unrealized Losses, 12 Months or Greater | (368) | (281)
Unrealized Losses, Total | (1,156) | (1,355)
U.S. Agency Obligations [Member] |  |
Marketable Securities [Line Items] |  |
Fair Value, Less than 12 Months | 209,623 | 206,105
Fair Value, 12 Months or Greater | 95,438 | 80,657
Fair Value, Total | 305,061 | 286,762
Unrealized Losses, Less than 12 Months | (525) | (390)
Unrealized Losses, 12 Months or Greater | (233) | (485)
Unrealized Losses, Total | (758) | (875)
Corporate Notes and Bonds [Member] |  |
Marketable Securities [Line Items] |  |
Fair Value, Less than 12 Months | 339,304 | 100,295
Fair Value, 12 Months or Greater | 50,707 | 31,277
Fair Value, Total | 390,011 | 131,572
Unrealized Losses, Less than 12 Months | (1,049) | (293)
Unrealized Losses, 12 Months or Greater | (268) | (164)
Unrealized Losses, Total | (1,317) | (457)
Commercial Paper [Member] |  |
Marketable Securities [Line Items] |  |
Fair Value, Less than 12 Months | 18,055 | 6,810
Fair Value, 12 Months or Greater | 0 | 0
Fair Value, Total | 18,055 | 6,810
Unrealized Losses, Less than 12 Months | (40) | (3)
Unrealized Losses, 12 Months or Greater | 0 | 0
Unrealized Losses, Total | $ (40) | $ (3)

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