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Marketable Securities (Tables) | 12 Months Ended
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Dec. 31, 2023
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 contractual maturity are as follows:
|  | 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 |
|  | December 31, 2022 |
(in thousands) |  | Amortized Cost |  |  | Gross Unrealized Holding Gains |  |  | Gross Unrealized Holding Losses |  |  | Fair Value |
Maturing in one year or less |  |  |  |  |  |  |  |  |  |  |  |
Corporate Bonds |  | $ | 5,001 |  |  | $ | — |  |  | $ | (56 | ) |  | $ | 4,945 |
U.S. Treasuries |  |  | 116,432 |  |  |  | — |  |  |  | (617 | ) |  |  | 115,815 |
Maturing after one year through five years |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasuries |  |  | 51,876 |  |  |  | — |  |  |  | (97 | ) |  |  | 51,779 |
Total |  | $ | 173,309 |  |  | $ | — |  |  | $ | (770 | ) |  | $ | 172,539 |
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 have been in an unrealized loss position:
|  | December 31, 2023 |
|  | Greater than twelve months |  |  | Total |
(in thousands) |  | Fair value |  |  | Unrealized loss |  |  | Fair value |  |  | Unrealized loss |
U.S. Treasuries |  | $ | 53,447 |  |  | $ | (95 | ) |  | $ | 53,447 |  |  | $ | (95 | )
Total |  | $ | 53,447 |  |  | $ | (95 | ) |  | $ | 53,447 |  |  | $ | (95 | )
|  | December 31, 2022 |
|  | Greater than twelve months |  |  | Total |
(in thousands) |  | Fair value |  |  | Unrealized loss |  |  | Fair value |  |  | Unrealized loss |
Corporate Bonds |  | $ | 4,945 |  |  | $ | (57 | ) |  | $ | 4,945 |  |  | $ | (57 | )
U.S. Treasuries |  |  | 162,601 |  |  |  | (713 | ) |  |  | 162,601 |  |  |  | (713 | )
Total |  | $ | 167,546 |  |  | $ | (770 | ) |  | $ | 167,546 |  |  | $ | (770 | )

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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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