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Marketable Securities (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2024
Marketable Securities |
Schedule of available-for-sale securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ |  | 2024 | ​ | 2023
Cash and cash equivalents | ​ | $ | — | ​ | $ | 4,729
Marketable securities | ​ | ​ | 89,438 | ​ | ​ | 71,601
Total | ​ | $ | 89,438 | ​ | $ | 76,330
​ The following table summarizes the available-for-sale securities held as of March 31, 2024 and December 31, 2023: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
March 31, 2024 | ​ | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses | ​ | Fair Value
Corporate debt securities | ​ | $ | 62,618 | ​ | $ | 10 | ​ | $ | (127) | ​ | $ | 62,501
U.S. Treasury securities | ​ | ​ | 24,448 | ​ | ​ | — | ​ | ​ | (6) | ​ | ​ | 24,442
Government-sponsored securities | ​ | ​ | 2,496 | ​ | ​ | — | ​ | ​ | (1) | ​ | ​ | 2,495
Total | ​ | $ | 89,562 | ​ | $ | 10 | ​ | $ | (134) | ​ | $ | 89,438
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2023 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate debt securities | ​ | $ | 41,610 | ​ | $ | 47 | ​ | $ | (45) | ​ | $ | 41,612
U.S. Treasury securities | ​ | ​ | 30,189 | ​ | ​ | 8 | ​ | ​ | — | ​ | ​ | 30,197
Government-sponsored securities | ​ | ​ | 4,517 | ​ | ​ | 4 | ​ | ​ | — | ​ | ​ | 4,521
Total | ​ | $ | 76,316 | ​ | $ | 59 | ​ | $ | (45) | ​ | $ | 76,330
Schedule of contractual maturities of available-for-sale securities other than investments in money market funds | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ |  | 2024 | ​ | 2023
Matures within one year | ​ | $ | 60,015 | ​ | $ | 61,672
Matures after one year through five years | ​ | ​ | 29,423 | ​ | ​ | 14,658
Total | ​ | $ | 89,438 | ​ | $ | 76,330

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