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Marketable Securities (Tables) | 6 Months Ended
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Jun. 30, 2023
Marketable Securities |
Summary of investments | The following table summarizes the Company’s investments as of June 30, 2023 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Estimated
​ |  | Cost |  | Gains |  | Losses |  | Fair Value
Marketable securities available-for-sale: | ​ | ​ |  | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ |
U.S. Treasury obligations | ​ | $ | 140,733 | ​ | $ | 15 | ​ | $ | (78) | ​ | $ | 140,670
Total available-for-sale securities | ​ | $ | 140,733 | ​ | $ | 15 | ​ | $ | (78) | ​ | $ | 140,670
​ The following table summarizes the Company’s investments as of December 31, 2022 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Estimated
​ |  | Cost |  | Gains |  | Losses |  | Fair Value
Marketable securities available-for-sale: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Treasury obligations | ​ | $ | 212,970 | ​ | $ | — | ​ | $ | (884) | ​ | $ | 212,086
Total available-for-sale securities | ​ | $ | 212,970 | ​ | $ | — | ​ | $ | (884) | ​ | $ | 212,086

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
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