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Investments in Equity Securities (Tables) | 6 Months Ended
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Jun. 30, 2022
Equity securities |
Debt Securities, Available-for-sale [Line Items] |
Schedule of Investments in Equity Securities | At June 30, 2022 and December 31, 2021, investments in equity securities were as follows:
(In thousands) | Cost |  | Gross Unrealized |  | Fair Value |  | Carrying Value
Gains |  | Losses |
June 30, 2022 |  |  |  |  |  |  |  |  |
Common stocks | $ | 863,106 |  |  | $ | 111,393 |  |  | $ | (41,827) |  |  | $ | 932,672 |  |  | $ | 932,672 |
Preferred stocks | 259,338 |  |  | 2,652 |  |  | (39,336) |  |  | 222,654 |  |  | 222,654 |
Total | $ | 1,122,444 |  |  | $ | 114,045 |  |  | $ | (81,163) |  |  | $ | 1,155,326 |  |  | $ | 1,155,326 |
December 31, 2021 |  |  |  |  |  |  |  |  |
Common stocks | $ | 619,896 |  |  | $ | 92,401 |  |  | $ | (16,894) |  |  | $ | 695,403 |  |  | $ | 695,403 |
Preferred stocks | 250,149 |  |  | 7,874 |  |  | (12,183) |  |  | 245,840 |  |  | 245,840 |
Total | $ | 870,045 |  |  | $ | 100,275 |  |  | $ | (29,077) |  |  | $ | 941,243 |  |  | $ | 941,243 |

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