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Investment Funds (Schedule of Investment Funds) (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Jul. 01, 2022 | Jan. 01, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Maximum loss exposure |  |  | $ 339,000 |  |
Investment funds |  |  | 1,621,655 | $ 1,608,548 |
Income (Loss) From Investment Funds For the Year Ended |  |  | 16,743 | 145,099 | $ 220,014
Ceded to Other Companies |  |  | 2,017,539 | 1,904,982 | 1,837,267
Deferred compensation trust assets |  |  | 36,000 | 30,000 |
Lifson Re |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Ceded to Other Companies |  |  | 437,000 | 399,000 |
Percentage of reinsurance placements of share placed amounts | 30.00% | 22.50% |  |  |
Financial services |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Investment funds |  |  | 433,407 | 465,683 |
Income (Loss) From Investment Funds For the Year Ended |  |  | (10,911) | 34,030 | 98,893
Transportation |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Investment funds |  |  | 344,278 | 336,753 |
Income (Loss) From Investment Funds For the Year Ended |  |  | 40,607 | 53,180 | 42,424
Real estate |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Investment funds |  |  | 201,625 | 204,644 |
Income (Loss) From Investment Funds For the Year Ended |  |  | (6,676) | 48,723 | 29,484
Energy |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Investment funds |  |  | 114,794 | 116,432 |
Income (Loss) From Investment Funds For the Year Ended |  |  | 5,058 | 1,425 | 22,118
Infrastructure |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Investment funds |  |  | 130,589 | 115,428 |
Income (Loss) From Investment Funds For the Year Ended |  |  | 13,049 | 4,603 | 1,372
Other funds |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Investment funds |  |  | 396,962 | 369,608 |
Income (Loss) From Investment Funds For the Year Ended |  |  | $ (24,384) | $ 3,138 | $ 25,723

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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481664/323-10-45-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481687/323-10-50-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(10)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 25 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-25 + Details
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