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v3.23.1

Investments (Tables) | 3 Months Ended
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Mar. 31, 2023
Investments |
Schedule of reconciliation of available-for-sale investments from cost basis to fair value | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | As of March 31, 2023
​ | ​ | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Adjusted | ​ | Unrealized | ​ | Unrealized | ​ | Estimated
​ | ​ | Cost | ​ | Gains | ​ | (Losses) | ​ | Fair Value
Corporate bonds | ​ | $ | 71,007 | ​ | $ | 82 | ​ | $ | (583) | ​ | $ | 70,506
Agency bonds | ​ | ​ | 19,020 | ​ | ​ | - | ​ | ​ | (43) | ​ | ​ | 18,977
Total investments | ​ | $ | 90,027 | ​ | $ | 82 | ​ | $ | (626) | ​ | $ | 89,483
Schedule of available-for-sale securities maturities | ​
​ | ​ | ​ | ​
Available-for-sale securities maturing as of December 31: | ​ | ​ | ​
2023 | ​ | $ | 35,526
2024 | ​ | ​ | 40,411
2025 | ​ | ​ | 13,546
Total | ​ | $ | 89,483

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