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Cash, Cash Equivalents and Marketable Securities - Summary of Company Cash, Cash Equivalents and Short-term Investments (Detail) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023 | Jun. 30, 2023
--- | --- | --- | ---
Cash and Cash Equivalents [Line Items] |  |  |
Available for sale debt securities, Amortized cost | $ 1,077,854 | $ 1,246,875 |
Available for sale debt securities, Gross unrealized gains | 6 | 1,124 |
Available for sale debt securities, Gross unrealized losses | (1,008) | (179) |
Cash and cash equivalents, Amortized cost | 1,461,477 | 1,675,305 |
Cash and cash equivalents, Gross unrealized losses | (1) |  |
Cash and cash equivalents | 383,622 | 428,430 | $ 851,929
Cash, cash equivalents and investments, Amortized cost | 383,623 | 428,430 |
Cash, cash equivalents and investments, Gross unrealized gains | 6 | 1,124 |
Cash, cash equivalents and investments, Gross unrealized losses | (1,009) | (179) |
Cash, cash equivalents and investments, Fair value | 1,460,474 | 1,676,250 |
Available for sale debt securities current, Fair value | 1,076,852 | 1,247,820 |
Cash and Money Market Funds [Member] |  |  |
Cash and Cash Equivalents [Line Items] |  |  |
Cash and cash equivalents, Amortized cost | 345,443 | 374,750 |
Cash and cash equivalents | 345,443 | 374,750 |
Commercial Paper [Member] |  |  |
Cash and Cash Equivalents [Line Items] |  |  |
Available for sale debt securities, Fair value | 26,866 | 113,362 |
Cash and cash equivalents, Amortized cost | 26,866 | 113,362 |
Government and Government Agency Bonds [Member] |  |  |
Cash and Cash Equivalents [Line Items] |  |  |
Available for sale debt securities, Gross unrealized gains |  | 1,006 |
Available for sale debt securities, Gross unrealized losses | (894) | (171) |
Available for sale debt securities, Fair value | 854,254 | 1,001,137 |
Cash and cash equivalents, Amortized cost | 855,148 | 1,000,302 |
Corporate Bond [Member] |  |  |
Cash and Cash Equivalents [Line Items] |  |  |
Available for sale debt securities, Gross unrealized gains | 6 | 118 |
Available for sale debt securities, Gross unrealized losses | (115) | (8) |
Available for sale debt securities, Fair value | 180,781 | 130,380 |
Cash and cash equivalents, Amortized cost | 180,890 | 130,270 |
Certificates of Deposit [Member] |  |  |
Cash and Cash Equivalents [Line Items] |  |  |
Available for sale debt securities, Fair value | 53,130 | 56,621 |
Cash and cash equivalents, Amortized cost | $ 53,130 | $ 56,621 |

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