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Investments - Gross Gains (Losses) Realized On Sales Of Investments (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Fixed maturity securities |  |  |
Gross Realized Gains | $ 1,783 | $ 863 | $ 2,306
Gross Realized Losses | (3,246) | (71,425) | (6,690)
Net | (1,463) | (70,562) | (4,384)
Equity securities |  |  |
Gross Realized Gains | 76,844 | 86,168 | 64,061
Gross Realized Losses | (91,109) | (61,252) | (18,826)
Net | (14,265) | 24,916 | 45,235
Short-term investments |  |  |
Gross Realized Gains | 0 | 8 | 236
Gross Realized Losses | (4) | (2,500) | (381)
Net | $ (4) | $ (2,492) | $ (145)

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- Definition Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-9 + Details
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