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Investments in Equity Securities (Tables) | 6 Months Ended
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Jun. 30, 2024
Equity securities |
Debt Securities, Available-for-sale [Line Items] |
Schedule of Investments in Equity Securities | At June 30, 2024 and December 31, 2023, investments in equity securities were as follows:
(In thousands) | Cost |  | Gross Unrealized |  | Fair Value |  | Carrying Value
Gains |  | Losses |
June 30, 2024 |  |  |  |  |  |  |  |  |
Common stocks | $ | 603,574 |  |  | $ | 139,146 |  |  | $ | (46,165) |  |  | $ | 696,555 |  |  | $ | 696,555 |
Preferred stocks | 374,409 |  |  | 19,762 |  |  | (12,634) |  |  | 381,537 |  |  | 381,537 |
Total | $ | 977,983 |  |  | $ | 158,908 |  |  | $ | (58,799) |  |  | $ | 1,078,092 |  |  | $ | 1,078,092 |
December 31, 2023 |  |  |  |  |  |  |  |  |
Common stocks | $ | 664,997 |  |  | $ | 191,806 |  |  | $ | (18,749) |  |  | $ | 838,054 |  |  | $ | 838,054 |
Preferred stocks | 284,335 |  |  | 3,075 |  |  | (35,117) |  |  | 252,293 |  |  | 252,293 |
Total | $ | 949,332 |  |  | $ | 194,881 |  |  | $ | (53,866) |  |  | $ | 1,090,347 |  |  | $ | 1,090,347 |

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