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Investments in Other Companies (Tables) | 12 Months Ended
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Dec. 31, 2023
Investments in Other Companies |
Schedule of reconciliation of Eve Level 3 investments | ​
​ | ​ | ​ | ​
Eve Level 3 Investments: | ​ | ​
Balance at December 31, 2021 |  | $ | —
Purchases | ​ |  | 6,551
Unrealized gains | ​ |  | 7,629
Balance at December 31, 2022 |  | $ | 14,180
Purchases | ​ |  | —
Realized loss on forfeiture of put options | ​ | ​ | (827)
Unrealized loss | ​ |  | (876)
Balance at December 31, 2023 | ​ | $ | 12,477

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