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Fair Value Measurement - Summary of Gross Unrealized Losses and Fair Value for Marketable Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Debt Securities, Available-for-sale [Line Items] |  |
Gross unrealized loss less than 12 consecutive months | $ (9,268) | $ (4,203)
Gross unrealized loss 12 consecutive months or longer | (12,817) | (5)
Total gross unrealized loss | (22,085) | (4,208)
Fair value less than 12 consecutive months | 545,731 | 957,702
Fair value 12 consecutive months or longer | 255,892 | 17,011
Total fair value | 801,623 | 974,713
US Government Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Gross unrealized loss less than 12 consecutive months | (7,873) | (2,239)
Gross unrealized loss 12 consecutive months or longer | (5,236) | (5)
Total gross unrealized loss | (13,109) | (2,244)
Fair value less than 12 consecutive months | 497,088 | 700,318
Fair value 12 consecutive months or longer | 107,960 | 17,011
Total fair value | 605,048 | 717,329
Corporate Notes and Bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Gross unrealized loss less than 12 consecutive months | (1,395) | (1,964)
Gross unrealized loss 12 consecutive months or longer | (7,581) |
Total gross unrealized loss | (8,976) | (1,964)
Fair value less than 12 consecutive months | 48,643 | 257,384
Fair value 12 consecutive months or longer | 147,932 |
Total fair value | $ 196,575 | $ 257,384

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