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Marketable Securities (Tables) | 9 Months Ended
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Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract] |
Summary of Amortized Cost and Estimated Fair Value of Marketable Securities by Contractual Maturity | The amortized cost and estimated fair value of marketable securities, by remaining contractual maturity, are as follows:
|  | September 30, 2024 |
(in thousands) |  | Amortized Cost |  |  | Gross Unrealized Holding Gains |  |  | Gross Unrealized Holding Losses |  |  | Fair Value |
Maturing after one year through five years |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasuries |  |  | 9,943 |  |  |  | 68 |  |  |  | — |  |  |  | 10,011 |
Total |  | $ | 9,943 |  |  | $ | 68 |  |  | $ | — |  |  | $ | 10,011 |
|  | December 31, 2023 |
(in thousands) |  | Amortized Cost |  |  | Gross Unrealized Holding Gains |  |  | Gross Unrealized Holding Losses |  |  | Fair Value |
Maturing in one year or less |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury Bill |  | $ | 8,806 |  |  | $ | 6 |  |  | $ | — |  |  | $ | 8,812 |
U.S. Treasuries |  |  | 97,086 |  |  |  | 12 |  |  |  | (95 | ) |  |  | 97,003 |
Total |  | $ | 105,892 |  |  | $ | 18 |  |  | $ | (95 | ) |  | $ | 105,815 |
The Company did not have any individual securities in an unrealized loss position as of September 30, 2024.
Summary of Fair Value and Gross Unrealized Losses of Marketable Securities | The following table summarizes the fair value and gross unrealized losses aggregated by category and the length of time that individual securities were in an unrealized loss position as of December 31, 2023:
|  | December 31, 2023 |
|  | Less than twelve months |  |  | Greater than twelve months |  |  | Total |
(in thousands) |  | Fair value |  |  | Unrealized loss |  |  | Fair value |  |  | Unrealized loss |  |  | Fair value |  |  | Unrealized loss |
U.S. Treasuries |  | $ | — |  |  | $ | — |  |  | $ | 53,447 |  |  | $ | (95 | ) |  | $ | 53,447 |  |  | $ | (95 | )
Total |  | $ | — |  |  | $ | — |  |  | $ | 53,447 |  |  | $ | (95 | ) |  | $ | 53,447 |  |  | $ | (95 | )

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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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