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Investments (Tables) | 3 Months Ended
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Mar. 31, 2023
Investments [Abstract] |
Investments in Marketable Equity Securities | Investments in marketable equity securities consist of the following:
| As of
| March 31, 2023 |  | December 31, 2022
(in thousands) |
Total cost | $ | 234,157 |  |  | $ | 270,764 |
Gross unrealized gains | 373,842 |  |  | 363,147 |
Gross unrealized losses | (4,456) |  |  | (23,990) |
Total Fair Value | $ | 603,543 |  |  | $ | 609,921 |
Gain on Marketable Equity Securities | The net gain on marketable equity securities comprised the following:
|  |  | Three Months Ended March 31
(in thousands) |  |  |  |  | 2023 |  | 2022
Gain on marketable equity securities, net |  |  |  |  | $ | 18,022 |  |  | $ | 46,912 |
Less: Net losses in earnings from marketable equity securities sold |  |  |  |  | 3,657 |  |  | 5,767 |
Net unrealized gains in earnings from marketable equity securities still held at the end of the period |  |  |  |  | $ | 21,679 |  |  | $ | 52,679 |

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