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Cash Equivalents and Marketable Securities (Tables) | 3 Months Ended
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Mar. 31, 2024
Cash Equivalents and Marketable Securities [Abstract] |
Summary of Amortized Cost and Fair Value of Cash Equivalents and Marketable Securities by Major Investment Category | The following tables summarize the amortized cost and fair value of the Company’s cash equivalents and marketable securities by major investment category for the periods indicated:
|  | March 31, 2024 |
|  | Amortized Cost |  |  | Gross Unrealized Gain |  |  | Gross Unrealized Loss |  |  | Estimated Fair Value |
|  | (in thousands) |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 142,817 |  |  | $ | — |  |  | $ | — |  |  | $ | 142,817 |
Total cash equivalents |  | $ | 142,817 |  |  | $ | — |  |  | $ | — |  |  | $ | 142,817 |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  | $ | 69,612 |  |  | $ | 1 |  |  | $ | (36 | ) |  | $ | 69,577 |
Certificates of deposit |  |  | 11,669 |  |  |  | 3 |  |  |  | (1 | ) |  |  | 11,671 |
U.S. government and agency debt securities |  |  | 122,660 |  |  |  | — |  |  |  | (108 | ) |  |  | 122,552 |
Corporate debt securities |  |  | 36,297 |  |  |  | 5 |  |  |  | (12 | ) |  |  | 36,290 |
Total marketable securities |  |  | 240,238 |  |  |  | 9 |  |  |  | (157 | ) |  |  | 240,090 |
Total cash equivalents and marketable securities |  | $ | 383,055 |  |  | $ | 9 |  |  | $ | (157 | ) |  | $ | 382,907 |
|  | December 31, 2023 |
|  | Amortized Cost |  |  | Gross Unrealized Gain |  |  | Gross Unrealized Loss |  |  | Estimated Fair Value |
|  | (in thousands) |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 306,801 |  |  | $ | — |  |  | $ | — |  |  | $ | 306,801 |
Commercial paper |  |  | 42,455 |  |  |  | 6 |  |  |  | — |  |  |  | 42,461 |
U.S. government and agency debt securities |  |  | 12,998 |  |  |  | — |  |  |  | (6 | ) |  |  | 12,992 |
Total cash equivalents |  | $ | 362,254 |  |  | $ | 6 |  |  | $ | (6 | ) |  | $ | 362,254 |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  | $ | 47,534 |  |  | $ | 17 |  |  | $ | (4 | ) |  | $ | 47,547 |
U.S. government and agency debt securities |  |  | 37,515 |  |  |  | — |  |  |  | (91 | ) |  |  | 37,424 |
Corporate debt securities |  |  | 4,816 |  |  |  | 3 |  |  |  | (1 | ) |  |  | 4,818 |
Total marketable securities |  |  | 89,865 |  |  |  | 20 |  |  |  | (96 | ) |  |  | 89,789 |
Total cash equivalents and marketable securities |  | $ | 452,119 |  |  | $ | 26 |  |  | $ | (102 | ) |  | $ | 452,043 |
Summary of Marketable Securities by Contractual Maturity | The Company’s marketable securities by contractual maturity were (in thousands):
|  | March 31, 2024 |
Within one year |  | $ | 239,788 |
After one year through two years |  |  | 302 |
Total marketable securities |  | $ | 240,090 |

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- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
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- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
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