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Background and Basis of Presentation - Surplus Note Exchange (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Background And Basis Of Presentation [Line Items] |  |  |
Realized Investment Gains (Losses) | $ (2,577) | $ (496) | $ 19
Parent Company [Member] |  |  |
Background And Basis Of Presentation [Line Items] |  |  |
Realized Investment Gains (Losses) | $ (3,088) | $ (498) | $ 55

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- Definition Amount of realized gain (loss) on investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(3)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 + Details
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