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Investments (Tables) | 3 Months Ended
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Mar. 31, 2024
Investments |
Schedule of reconciliation of available-for-sale investments from cost basis to fair value | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of March 31, 2024
​ |  | ​ | ​ |  | Gross |  | Gross |  | Estimated
​ | ​ | Adjusted | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ | ​ | Cost | ​ | Gains | ​ | (Losses) | ​ | Value
Corporate bonds | ​ | $ | 79,633 | ​ | $ | 155 | ​ | $ | (295) | ​ | $ | 79,493
Agency bonds | ​ | ​ | 15,001 | ​ | ​ | 4 | ​ | ​ | (13) | ​ | ​ | 14,992
Total investments | ​ | $ | 94,634 | ​ | $ | 159 | ​ | $ | (308) | ​ | $ | 94,485
Schedule of available-for-sale securities maturities | ​
​ | ​ | ​ | ​
Available-for-sale securities maturing as of December 31: | ​ | ​ | ​
2024 | ​ | $ | 50,632
2025 | ​ | ​ | 26,916
2026 | ​ | ​ | 9,747
2027 | ​ | ​ | 7,190
Total | ​ | $ | 94,485
​

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