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v3.23.1

Short Term Investments - other (Tables) | 3 Months Ended
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Mar. 31, 2023
Short Term Investments - other |
Schedule of other short term investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | March 31, |  | December 31,
​ |  | 2023 |  | 2022
Treasury bills | ​ | $ | 499 | ​ | $ | 494
Certificates of deposit | ​ |  | 13 | ​ |  | 13
Total | ​ | $ | 512 | ​ | $ | 507

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- Definition Tabular disclosure of other investments readily marketable, including, but not limited to, description of investment, fair value and value as measured by quoted price. + References No definition available. + Details
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- References No definition available. + Details
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