| Schedule of Cash, Cash Equivalents, Restricted Cash and Investments |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | September 30, 2024 | | (in thousands) | | Amortized Cost | | Unrealized Gains | | Unrealized Losses | | Estimated Fair Value | Cash, cash equivalents, and restricted cash | | $ | 37,142 | | | $ | — | | | $ | — | | | $ | 37,142 | | | | | | | | | | | | Corporate bonds | | 599 | | | 2 | | | — | | | 601 | | | Commercial paper | | 2,028 | | | — | | | — | | | 2,028 | | | Treasury bills | | 196,311 | | | 160 | | | — | | | 196,471 | | | Treasury bonds | | 112,246 | | | 259 | | | — | | | 112,505 | | | | | | | | | | | Total cash, cash equivalents, restricted cash, and short-term investments | | 348,326 | | | 421 | | | — | | | 348,747 | | | Total long-term investment corporate bond | | — | | | — | | | — | | | — | | Total cash, cash equivalents, restricted cash, and investments | | $ | 348,326 | | | $ | 421 | | | $ | — | | | $ | 348,747 | | | | | | | | | | | | | December 31, 2023 | | (in thousands) | | Amortized Cost | | Unrealized Gains | | Unrealized Losses | | Estimated Fair Value | Cash, cash equivalents, and restricted cash | | $ | 48,875 | | | $ | — | | | $ | — | | | $ | 48,875 | | | | | | | | | | | | Corporate bonds | | 33,576 | | | 4 | | | — | | | 33,580 | | | Commercial paper | | 39,305 | | | — | | | (1) | | | 39,304 | | | Treasury bills | | 122,757 | | | 49 | | | — | | | 122,806 | | | Treasury bonds | | 105,903 | | | 21 | | | — | | | 105,924 | | | | | | | | | | | Total cash, cash equivalents, restricted cash, and short-term investments | | 350,416 | | | 74 | | | (1) | | | 350,489 | | Total long-term investment corporate bond | | 200 | | | 1 | | | — | | | 201 | | Total cash, cash equivalents, restricted cash, and investments | | $ | 350,616 | | | $ | 75 | | | $ | (1) | | | $ | 350,690 | |
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