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Marketable Securities (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2024
Marketable Securities |
Schedule of available-for-sale securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31,
​ |  | 2024 | ​ | 2023
Cash and cash equivalents | ​ | $ | 997 | ​ | $ | 4,729
Marketable securities | ​ | ​ | 98,737 | ​ | ​ | 71,601
Total | ​ | $ | 99,734 | ​ | $ | 76,330
​ The following table summarizes the available-for-sale securities held as of June 30, 2024 and December 31, 2023: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
June 30, 2024 | ​ | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses | ​ | Fair Value
Corporate debt securities | ​ | $ | 62,603 | ​ | $ | 6 | ​ | $ | (181) | ​ | $ | 62,428
U.S. Treasury securities | ​ | ​ | 22,938 | ​ | ​ | — | ​ | ​ | (3) | ​ | ​ | 22,935
Government-sponsored securities | ​ | ​ | 7,492 | ​ | ​ | 3 | ​ | ​ | (4) | ​ | ​ | 7,491
Commercial paper | ​ | ​ | 6,883 | ​ | ​ | — | ​ | ​ | (3) | ​ | ​ | 6,880
Total | ​ | $ | 99,916 | ​ | $ | 9 | ​ | $ | (191) | ​ | $ | 99,734
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
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 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31,
​ |  | 2024 | ​ | 2023
Matures within one year | ​ | $ | 62,076 | ​ | $ | 61,672
Matures after one year through five years | ​ | ​ | 37,658 | ​ | ​ | 14,658
Total | ​ | $ | 99,734 | ​ | $ | 76,330

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