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Concentration of Risks - Investment Concentration Risk (Details) - Investment Concentration Risk - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Concentration Risk [Line Items] |  |
Fair value | $ 1,077,488 | $ 1,041,454
Insurance Solutions |  |
Concentration Risk [Line Items] |  |
Fair value | 956,808 | 915,556
Insurance Solutions consolidated VIEs |  |
Concentration Risk [Line Items] |  |
Fair value | 120,680 | 125,898
United States | Insurance Solutions |  |
Concentration Risk [Line Items] |  |
Fair value | $ 688,545 | $ 643,438
United States | Insurance Solutions | Geographic Area |  |
Concentration Risk [Line Items] |  |
% of total | 72.00% | 70.00%
United States | Insurance Solutions consolidated VIEs |  |
Concentration Risk [Line Items] |  |
Fair value | $ 111,781 | $ 120,144
United States | Insurance Solutions consolidated VIEs | Geographic Area |  |
Concentration Risk [Line Items] |  |
% of total | 93.00% | 95.00%
Cayman Islands | Insurance Solutions |  |
Concentration Risk [Line Items] |  |
Fair value | $ 207,034 |
Cayman Islands | Insurance Solutions | Geographic Area |  |
Concentration Risk [Line Items] |  |
% of total | 22.00% |
Canada | Insurance Solutions |  |
Concentration Risk [Line Items] |  |
Fair value |  | $ 6,579
Canada | Insurance Solutions | Geographic Area |  |
Concentration Risk [Line Items] |  |
% of total |  | 1.00%
Canada | Insurance Solutions consolidated VIEs |  |
Concentration Risk [Line Items] |  |
Fair value |  | $ 1,075
Canada | Insurance Solutions consolidated VIEs | Geographic Area |  |
Concentration Risk [Line Items] |  |
% of total |  | 1.00%
Other | Insurance Solutions |  |
Concentration Risk [Line Items] |  |
Fair value | $ 61,229 | $ 265,539
Other | Insurance Solutions | Geographic Area |  |
Concentration Risk [Line Items] |  |
% of total | 6.00% | 29.00%
Other | Insurance Solutions consolidated VIEs |  |
Concentration Risk [Line Items] |  |
Fair value | $ 8,899 | $ 4,679
Other | Insurance Solutions consolidated VIEs | Geographic Area |  |
Concentration Risk [Line Items] |  |
% of total | 7.00% | 4.00%

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